Toro 5900 manuel d'utilisation

Part No. 08159S L Service Manual Groundsmaster R 5900 & 5910 Preface The pur pose of this public ation is to pr ovide t he service technic ian with inf orm ation for t roubles hooting, t est ing, and repair of maj or syst ems and co mponents on the Gr oundsmas ter 5900 and 5910. REFE R TO THE O PERA TOR’S MANUALS FO R OP- ERA TING , M AI NTE [...]

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Gr oundsmas ter 5900/ 5910 T able Of Contents Chapter 1 - - Safety Gener al Safet y I nst ruc tions 1 - - 2 .................. Jackin g Instructions 1 - - 5 ......................... Safet y and I nst ruc tion Dec als 1 - - 6 ................ Cha pter 2 - - Pr oduct Re cor ds and Mainte nanc e Produc t Records 2 - - 1 ........................... Ma[...]

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Gr oundsmas ter 5900/ 5910 T able Of Contents (Continued) Chap ter 9 - - Op erato r Cab Gener al Inf orm ation 9 - - 2 ........................ Serv ice and Repairs 9 - - 3 ........................ ICE COMPRESSOR SER VICE MANUAL Cha pter 1 0 - - Foldout Dra wings Hydraulic S chemat ic 10 - - 3 ....................... Elect rical S chemat ics 10 - -[...]

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Groundsmaster 5900/5910 Page 1 - - 1 Safety Chapter 1 Safety T able of Contents GENERAL SAFETY INSTRUCTIONS 2 ............ Before Operating 2 ............................ While Operating 3 ............................. Maintenance and Service 4 .................... JACKING INSTRUCTIONS 5 ..................... Jacking the Front End 5 ...............[...]

Groundsmaster 5900/5910 Page 1 - - 2 Safety General Safety Instructions The Groundsmaster 5900 and 5910 are tested and cer- tified by T oro for c ompliance with existing safety stan- dards and specifications. Although hazard control and accident prevention partially are dependent upon the design and configuration of the machine, these factors are a[...]

Groundsmaster 5900/5910 Page 1 - - 3 Safety While Operating 1. Sit on the seat when starting and operating the ma- chine. 2. Before starting the engine: A. Engage the parking brake. B. Make sure the traction pedal is in the neutral posi- tion and the PTO switch is OFF (disengaged). C. After engine is started, release parking brake and keep foot off[...]

Groundsmaster 5900/5910 Page 1 - - 4 Safety Maintenance and Service 1. Before servicing or making machine adjustments, lower cutting decks, stop engine, apply parking brake and remove key from the ignition switch. 2. Make sure machine is in safe operating condition by keeping all nuts, bolts and screws tight. 3. Shut engine of f before checking or [...]

Groundsmaster 5900/5910 Page 1 - - 5 Safety Jacking Instructions CAUTION When changing attachments, tires or perform- ing other service that requires t he machine to be raised, use correct jacks, hoists and supports to raise and support the machine. Make sure ma- chine is parked on a solid level surface such as a concrete floor . Prior to raising m[...]

Groundsmaster 5900/5910 Page 1 - - 6 Safety Safety and Instruction Decals Numerous safety and instruction decals are affixed to your Groundsmaster . If any decal becomes illegible or damaged, install a new decal. Decal part numbers are listed in your Parts Catalog.[...]

Groundsmaster 5900/5910 Page 2 - - 1 Product Records and Maintenance Chapter 2 Product Records and Maintenance T able of Contents PRODUCT RECORDS 1 ......................... MAINTENANCE 1 ............................... EQUIV ALENTS AND CONVERSIONS 2 ........... Decimal and Millimeter Equivalents 2 ............ U.S. to Metric Conversions 2 ........[...]

0.09375 Groundsmaster 5900/5910 Page 2 - - 2 Product Records and Maintenance Equivalents and Conversions[...]

Groundsmaster 5900/5910 Page 2 - - 3 Product Records and Maintenance T orque Specifications Recommended fastener torque values are listed in the following tables. For critical applications, as determined by T oro, either the recommended torque or a torque that is unique to the application is clearly identified and spe- cified in this Service Manual[...]

Groundsmaster 5900/5910 Page 2 - - 4 Product Records and Maintenance Standard T orque for Dry , Zinc Plated and Steel Fasteners (Inch Series) Thread Size Grade 1, 5 & 8w i t hT h i n Height Nuts SAE Grade 1 Bolts, Screws, Studs & Sems with Regular Height Nuts (SAE J995 Grade 2 or Stronger Nuts) SAE Grade 5 Bolts, Screws, Studs & Sems wi[...]

Groundsmaster 5900/5910 Page 2 - - 5 Product Records and Maintenance Standard T orque for Dry , Zinc Plated and Steel Fasteners (Metric Series) T h r e a d S i z e Class 8.8 Bolts, Screws and Studs with R e g u l a r H e i g h t N u t s Class 10.9 Bolts, Screws and Studs with R e g u l a r H e i g h t N u t s Thread Size Regular Height Nuts (Class [...]

Groundsmaster 5900/5910 Page 2 - - 6 Product Records and Maintenance Other T orque Specifications SAE Grade 8 Steel Set Screws T h r e a d S i z e Recommended T orque Thread Size Square Head Hex Socket 1/4 - - 20 UNC 140 + 20 in - - lb 73 + 12 in - - lb 5/16 - - 18 UNC 215 + 35 in - - lb 145 + 20 in - - lb 3/8 - - 16 UNC 35 + 10 ft - - lb 18 + 3f t[...]

Groundsmaster 5900/5910 Page 3 - - 1 Diesel Engine Chapter 3 Diesel Engine T able of Contents GENERAL INFORMA TION 2 ..................... Operator ’s Manual 2 .......................... Engine Identification 2 ......................... Engine Electronic Control Module (ECM) 2 ....... Stopping the Engine 3 ......................... Fuel Injection[...]

Groundsmaster 5900/5910 Page 3 - - 2 Diesel Engine General Information This Chapter gives information about specifications of the Cummins B3.3 diesel engine used in the Ground- smaster 5900 and 5910. Additionally , some engine re- pair procedures are described in this manual. Described adjustments and repairs require tools which are com- monly avai[...]

Groundsmaster 5900/5910 Page 3 - - 3 Diesel Engine Stopping the Engine IMPORT ANT : Before stopping the engine after mowing or full load operation, allow the engine to run at low idle speed for five (5) minutes. This will al- low the turbocharger and internal engine compo- nents to adequately cool down. Failure to allow this cool down period may le[...]

Groundsmaster 5900/5910 Page 3 - - 4 Diesel Engine Engine Specifications Item Description Make / Designation Cummins, 4 - - Cycle, 4 Cylinder , Liquid Cooled, T urbocharged, Diesel Engine Bore 3.74 in (95.0 mm) Stroke 4.53 in (1 15 mm) T otal Displacement 201 in 3 (3300 cc) Firing Order 1 (Closest to Engine Pulley) - - 2 - - 4 - - 3 Direction of Ro[...]

Groundsmaster 5900/5910 Page 3 - - 5 Diesel Engine Engine Fastener T orque Specifications Item Description Alternator Adjusting Cap Screw 23 ft - - lb (31 N - - m) Alternator Mounting Bracket Cap Screw (2 used) 23 ft - - lb (31 N - - m) Alternator Mounting Cap Screw 49 ft - - lb (66 N- - m) Crankshaft Pulley Bolt 274 ft - - lb (372 N - - m) Exhaust[...]

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Groundsmaster 5900/5910 Page 3 - - 7 Diesel Engine Adjustments V alve Clearance 1. Park machine on a level surface, lower cutting decks, stop engine, engage parking brake and remove key from the ignition switch. 2. Raise and support hood. 3. Remove valve cover from engine (see V alve Cover Removal in the Service and Repairs section of this chap- te[...]

Groundsmaster 5900/5910 Page 3 - - 8 Diesel Engine Service and Repairs Air Filter System Figure 4 1. Clamp 2. Air hose 3. Flange head screw (6 used) 4. Air cleaner mount 5. Flange nut (8 used) 6. Air cleaner mounting band (2 used) 7. Air cleaner assembly 8. Adapter 9. Service indicator 10. Worm clamp 1 1. Intake tube 12. U - - bolt 13. Cap screw 14[...]

Groundsmaster 5900/5910 Page 3 - - 9 Diesel Engine Removal (Fig. 4) 1. Park machine on a level surface, lower cutting decks, stop engine, engage parking brake and remove key from the ignition switch. 2. Raise and support hood to allow access to engine. 3. Remove air cleaner components as needed using Figure 4 as a guide. 4. Inspect all tubes and cl[...]

Groundsmaster 5900/5910 Page 3 - - 1 0 Diesel Engine Exhaust System Figure 8 1. Exhaust clamp 2. Exhaust tube 3. Muffler clamp (2 used) 4. Muffler 5. T ailpipe 6. Flange head screw (4 used) 7. Heat shield FRONT RIGHT 50 to 70 in - - lb (5.7 to 7.9 N - - m) 2 1 3 4 7 6 5 3[...]

Groundsmaster 5900/5910 Page 3 - - 1 1 Diesel Engine Removal (Fig. 8) CAUTION The engine and exhaust system may be hot. T o avoid possible burns, allow the engine and ex - haust system to cool before working on the ex- haust system. 1. Park machine on a level surface, lower cutting decks, stop engine, engage parking brake and remove key from the ig[...]

Groundsmaster 5900/5910 Page 3 - - 1 2 Diesel Engine T urbocharger Figure 1 1 1. T urbocharger assembly 2. Flange nut (4 used) 3. Banjo bolt 4. Sealing washer 5. Oil supply tube 6. Exhaust manifold 7. Banjo bolt 8. Sealing washer 9. Coupling 10. O - - ring 1 1. Exhaust manifold gasket 12. Gasket 13. Flange head screw (2 used) 14. Flange head screw [...]

Groundsmaster 5900/5910 Page 3 - - 13 Diesel Engine Removal (Fig. 1 1) CAUTION The engine and exhaust system may be hot. T o avoid possible burns, allow the engine and ex - haust system to cool before working on the turbocharger . 1. Park machine on a level surface, lower cutting decks, stop engine, engage parking brake and remove key from the igni[...]

Groundsmaster 5900/5910 Page 3 - - 1 4 Diesel Engine Fuel T ank Figure 12 1. Fitting cover 2. Screw (3 used) 3. Fuel supply standpipe 4. Fuel return standpipe 5. Bushing (2 used) 6. Elbow fitting 7. Bushing 8. Fuel tank 9. Fuel hose (2 used) 10. Flange nut (2 used) 1 1. T ank hold down 12. Flange head screw (2 used) 13. Clamp (2 used) 14. Cap 15. P[...]

Groundsmaster 5900/5910 Page 3 - - 15 Diesel Engine Fuel T ank Removal (Fig. 12) 1. Park machine on a level surface, lower cutting decks, stop engine, engage parking brake and remove key from the ignition switch. 2. Chock rear wheels and jack up front of machine. Support machine on jack stands. Remove front, left wheel to allow fuel tank removal. 3[...]

Groundsmaster 5900/5910 Page 3 - - 1 6 Diesel Engine Radiator Figure 14 1. Radiator assembly 2. Flange nut (4 used) 3. Support plate (2 used) 4. Flange nut (4 used) 5. Rubber pad (4 used) 6. Hose clamp (3 used) 7. Upper radiator hose 8. Overflow hose 9. Hose clamp 10. Worm clamp (5 used) 1 1. Barb fitting 12. Drain cock fitting 13. Fan shroud 14. A[...]

Groundsmaster 5900/5910 Page 3 - - 17 Diesel Engine CAUTION Do not open radiator cap or drain coolant if the radiator or engine is hot. Pressurized, hot cool- ant can escape and cause burns. Ethylene - - glycol antifreeze is poisonous. Dis- pose of coolant properly , or store it in a properly labeled container away from children and pets. 6. Drain [...]

Groundsmaster 5900/5910 Page 3 - - 1 8 Diesel Engine Alternator Figure 17 1. Alternator 2. Front cover 3. Belt 4. Bevel washer (2 used) 5. Flange head screw 6. Flat washer 7. Hex nut 8. Flange head screw (2 used) 9. Alternator bracket 10. Cap screw 1 1. Water pump 12. Adjusting bracket 13. Alternator bracket 49 ft - - lb (66 N - - m) 9 6 1 2 7 11 1[...]

Groundsmaster 5900/5910 Page 3 - - 19 Diesel Engine Removal (Fig. 17) 1. Park machine on a level surface, lower cutting decks, stop engine, engage parking brake and remove key from the ignition switch. 2. Raise and support hood to allow access to engine. 3. Remove battery access panel. Disconnect negative battery cable first and then positive batte[...]

Groundsmaster 5900/5910 Page 3 - - 2 0 Diesel Engine Starter Motor Figure 18 1. Engine 2. Starter motor 3. Flange head screw (2 used) 2 1 3 32 ft - - lb (43 N - - m) FRONT RIGHT[...]

Groundsmaster 5900/5910 Page 3 - - 21 Diesel Engine Removal (Fig. 18) 1. Park machine on a level surface, lower cutting decks, stop engine, engage parking brake and remove key from the ignition switch. 2. Raise and support hood to allow access to engine. 3. Remove battery access panel. Disconnect negative battery cable first and then positive batte[...]

Groundsmaster 5900/5910 Page 3 - - 2 2 Diesel Engine V alve Cover Figure 20 1. Engine 2. V alve cover 3. Lock nut (3 used) 4. Flat washer (3 used) 5. Isolation washer (3 used) 6. Oil fill cap 7. V alve cover gasket 2 1 3 4 6 5 7 80 in - - lb (9 N - - m) FRONT RIGHT[...]

Groundsmaster 5900/5910 Page 3 - - 23 Diesel Engine Removal (Fig. 20) 1. Park machine on a level surface, lower cutting decks, stop engine, engage parking brake and remove key from the ignition switch. 2. Raise and support hood to allow access to engine. 3. Thoroughly clean valve cover and cylinder head to prevent contaminant entry into engine. 4. [...]

Groundsmaster 5900/5910 Page 3 - - 2 4 Diesel Engine Engine Breather System Figure 21 1. Hose 2. Hose clamp 3. Spacer 4. Breather mount plate 5. Cap screw (2 used) 6. Breather 7. Breather outlet hose 8. Latch plate 9. Hose clamp 10. Breather inlet hose 11 . H o s e c l a mp 12. Hose clamp 13. Breather hose 14. Hose barb 15. Hose 16. Check valve 17.[...]

Groundsmaster 5900/5910 Page 3 - - 25 Diesel Engine Removal (Fig. 21) 1. Park machine on a level surface, lower cutting decks, stop engine, engage parking brake and remove key from the ignition switch. 2. Raise and support hood to allow access to engine. 3. Clean breather components before removal to pre- vent contaminant entry into breather system[...]

Groundsmaster 5900/5910 Page 3 - - 2 6 Diesel Engine Thermostat Figure 23 1. W ater pump 2. Seal 3. Thermostat 4. Gasket 5. Thermostat housing 6. Flange head screw (2 used) 14 ft - - lb (19 N - - m) 3 1 2 4 5 6 Removal (Fig. 23) 1. Park machine on a level surface, lower cutting decks, stop engine, engage parking brake and remove key from the igniti[...]

Groundsmaster 5900/5910 Page 3 - - 27 Diesel Engine 3. Slowly heat the water and stir water to allow uniform water temperature. Note and record the temperature for the following: A. The thermostat should start to open at 180 o F (82 o C). B. The thermostat should be fully open (0.315” (8 mm) lift) at 203 o F( 9 5 o C). 4. If the thermostat fails [...]

Groundsmaster 5900/5910 Page 3 - - 2 8 Diesel Engine Wa t er P u m p Figure 25 1. Flange head screw (4 used) 2. W ater pump pulley 3. Belt 4. Flange head screw 5. Flange head screw (2 used) 6. O - - ring 7. Gasket 8. Thermostat housing 9. Flange head screw (3 used) 10. Water pump 1 1. Thermostat 12. Front cover 13. Seal 14. Gasket 11 10 3 8 12 1 2 [...]

Groundsmaster 5900/5910 Page 3 - - 29 Diesel Engine Removal (Fig. 25) 1. Park machine on a level surface, lower cutting decks, stop engine, engage parking brake and remove key from the ignition switch. 2. Raise and support hood to allow access to engine. CAUTION Do not open radiator cap or drain coolant if the radiator or engine is hot. Pressurized[...]

Groundsmaster 5900/5910 Page 3 - - 3 0 Diesel Engine Front Cover Figure 27 1. Belt 2. Front cover 3. W ater pump pulley 4. Bevel washer (2 used) 5. Flange head screw 6. Flat washer 7. Hex nut 8. Flange head screw (2 used) 9. Alternator bracket 10. Water pump assembly 1 1. Crankshaft pulley with tone wheel 12. Adjusting bracket 13. Alternator bracke[...]

Groundsmaster 5900/5910 Page 3 - - 31 Diesel Engine Removal (Fig. 27) 1. Park machine on a level surface, lower cutting decks, stop engine, engage parking brake and remove key from the ignition switch. 2. Raise and support hood to allow access to engine. 3. Loosen screws that secure alternator to mounting brackets and rotate alternator toward engin[...]

Groundsmaster 5900/5910 Page 3 - - 3 2 Diesel Engine Installation (Fig. 27) 1. Make sure that mounting surfaces on engine, front cover and oil pan are thoroughly cleaned. 2. Fill 50% of the seal lip space with grease. Use Cum- mins seal installer tool #3164900 (or equivalent) to install new oil seal into front cover . 3. Apply Cummins sealant #3164[...]

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Groundsmaster 5900/5910 Page 3 - - 3 4 Diesel Engine Oil Pan Figure 30 1. O - - ring 2. Flat washer 3. Flange head screw (2 used) 4. Flange head screw (24 used) 5. Sealing washer 6. Drain plug 7. Oil pan 8. Oil suction tube 3 8 4 1 2 5 6 7 3 24 ft - - lb (32 N - - m) 14 ft - - lb (19 N - - m) 38 ft - - lb (51 N - - m) 14 ft - - lb (19 N - - m) FRON[...]

Groundsmaster 5900/5910 Page 3 - - 35 Diesel Engine Removal (Fig. 30) 1. Park machine on a level surface, lower cutting decks, stop engine, engage parking brake and remove key from the ignition switch. 2. Raise and support hood to allow access to engine. 3. Drain oil from engine. 4. Remove twenty four (24) flange head screws that se- cure oil pan t[...]

Groundsmaster 5900/5910 Page 3 - - 3 6 Diesel Engine Engine Figure 31 1. Engine assembly 2. T raction flush manifold 3. Cap screw (8 used) 4. Cap screw (4 used) 5. Rear engine mount (2 used) 6. Lock washer (4 used per mount) 7. Cap screw (4 used per mount) 8. Engine isolator mount (4 used) 9. Snubbing washer (4 used) 10. Lock nut (4 used) 1 1. Cap [...]

Groundsmaster 5900/5910 Page 3 - - 37 Diesel Engine CAUTION The muffler and exhaust pipe may be hot. T o avoid possible burns, allow the exhaust system to cool before working on or near the muffler . 6. Remove exhaust system from engine (see Exhaust System Removal in this section). 7. Remove air cleaner system from engine (see Air Cleaner Removal i[...]

Groundsmaster 5900/5910 Page 3 - - 3 8 Diesel Engine CAUTION Make sure that hoist or lift used to remove engine can properly support engine. Engine weighs approximately 606 pounds (275 kg). 13. Connect suitable hoist or lift to the front and rear lift tabs on engine. 14. Remove lock nuts, snubbing washers and cap screws securing the engine brackets[...]

Groundsmaster 5900/5910 Page 3 - - 39 Diesel Engine 9. On Groundsmaster 5910 machines, install air condi- tioning compressor to brackets (see Air Conditioning Compressor Installation in the Service and Repairs sec- tion of Chapter 10 - - Operator Cab). Make sure that drive belt is properly tensioned. 10. Using notes taken during engine removal, con[...]

Groundsmaster 5900/5910 Page 3 - - 4 0 Diesel Engine Flywheel Coupling Assembly Figure 37 1. Cap screw (12 used) 2. W asher (12 used) 3. Coupling housing 4. Cap screw (8 used) 5. W asher (8 used) 6. Flywheel coupling 7. Engine assembly FRONT RIGHT 29 to 33 ft - - lb ( 4 0t o4 4N - - m ) Threadlocker Permatex 1 2 3 4 5 6 7[...]

Groundsmaster 5900/5910 Page 3 - - 41 Diesel Engine Disassembly (Fig. 37) 1. If engine is in machine, hydraulic pump assembly needs to be removed from engine before coupling can be serviced (see Pump Assembly in Chapter 4 - - Hy- draulic Systems). 2. Remove coupling housing and flywheel coupling from engine using Figure 37 as a guide. Assembly (Fig[...]

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Groundsmaster 5900/5910 Hydraulic System Page 4 - - 1 Chapter 4 Hydraulic System T able of Contents SPECIFICA TIONS 2 ............................. GENERAL INFORMA TION 3 ..................... T raction Unit Operator ’s Manual 3 ............... Check Hydraulic Fluid 3 ....................... Relieving Hydraulic System Pressure 3 .......... T owin[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 2 Specifications Item Description Piston (T raction) Pump Rexroth Bosch, V ariable Displacement Piston Pump Maximum Pump Displacement (per revolution) 3.84 Cubic Inches (63 cc) T raction Relief Pressure Forward 4330 PSI (299 bar) Reverse 5330 PSI (368 bar) Charge Circuit Relief Pressure 330 PSI (2[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 3 General Information T raction Unit Operator ’ s Manual The T raction Unit Operator ’s Manual provides informa- tion regarding the operation, general maintenance and maintenance intervals for your Groundsmaster ma- chine. Refer to that publication for additional information when servicing the[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 4 T owing T raction Unit IMPORT ANT : If towing limits are exceeded, severe damage to the piston (traction) pump may occur . If it becomes necessary to tow or push the machine, move machine in a forward direction at a speed below 2 mph (3.2 kph), and for a very short distance. If the ma- chine nee[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 5 T raction Circuit Component Failure The traction circuit on Groundsmaster 5900 and 5910 machines is a closed loop system that includes the pis- ton (traction) pump and four (4) wheel motors. If a com- ponent in the traction circuit should fail, debris and contamination from the failed component [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 6 Hydraulic Hoses Hydraulic hoses are subject to extreme conditions such as pressure differentials during operation and exposure to weather , sun, chemicals, very warm storage condi- tions or mishandling during operation and maintenance. These conditions can cause hose damage and deterio- ration. [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 7 Hydraulic Hose and T ube Installation (O - - Ring Face Seal Fitting) 1. Make sure threads and sealing surfaces of the hose/ tube and the fitting are free of burrs, nicks, scratches or any foreign material. 2. As a preventative measure against leakage, it is rec- ommended that the face seal O - -[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 8 Hydraulic Fitting Installation (SAE Straight Thread O - - Ring Fitting into Component Port) Non - - Adjustable Fitting (Fig. 7) 1. Make sure all threads and sealing surfaces of fitting and component port are free of burrs, nicks, scratches or any foreign material. 2. As a preventative measure ag[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 9 Adjustable Fitting (Fig. 9) 1. Make sure all threads and sealing surfaces of fitting and component port are free of burrs, nicks, scratches or any foreign material. 2. As a preventative measure against leakage, it is rec- ommended that the O - - ring be replaced any time the connection is opened[...]

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Groundsmaster 5900/5910 Hydraulic System Page 4 - - 1 1 Hydraulic Schematic The hydraulic schematic for Groundsmaster 5900 and 5910 machines is located in C hapter 10 - - Foldout Draw- ings. Hydraulic System[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 12 Hydraulic Flow Diagrams T raction Circuit: Low Speed (Forward Shown) Working Pressure Low Pressure (Charge) Return or Suction Flow REAR WHEEL MOTORS FRONT WHEEL MOTORS REV FOR CHG[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 13 T raction Circuit: Low Speed A variable displacement, bi - - directional piston pump is directly coupled to the engine flywheel to provide hy- draulic flow for the traction circuit. The piston pump swash plate movement is controlled by an electronic proportional servo assembly . Pushing the tra[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 14 T raction Circuit: H igh Speed (Forward Shown) Working Pressure Low Pressure (Charge) Return or Suction Flow REAR WHEEL MOTORS FRONT WHEEL MOTORS REV FOR CHG[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 15 T raction Circuit: High Speed A variable displacement, bi - - directional piston pump is directly coupled to the engine flywheel to provide hy- draulic flow for the traction circuit. The piston pump swash plate movement is controlled by an electronic proportional servo assembly . Pushing the tr[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 16 T raction Circuit: T raction Control (T raction Assist Switch Depressed in Low Speed) Working Pressure Low Pressure (Charge) Return or Suction Flow REAR WHEEL MOTORS FRONT WHEEL MOTORS REV FOR CHG[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 17 T raction Circuit: T raction Control A flow divider is incorporated into the traction circuit to provide a proportioned flow to the front and rear wheel motors for a true four - - wheel drive system. When the Hi - - Lo speed switch is in the Low position and the traction pedal is pressed for th[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 18 (Deck Lift Control Manifold Solenoids S1 and S5 Energized) Working Pressure Low Pressure (Charge) Return or Suction Flow REAR WHEEL MOTORS FRONT WHEEL MOTORS REV FOR CHG Raise Cutting Deck (Center Deck Switch Pressed T o Raise)[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 19 Raise Cutting Deck A three section gear pump is coupled to the piston (trac- tion) pump. The gear pump section (P3) farthest from the piston pump supplies hydraulic flow to the lift control manifold, the steering/cooling fan control manifold and the traction charge circuit. Hydraulic flow from [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 20 REAR WHEEL MOTORS FRONT WHEEL MOTORS REV FOR CHG (Deck Lift Control Manifold Solenoids S1, S8 and S9 Energized) Working Pressure Low Pressure (Charge) Return or Suction Flow Lower Cutting Deck (Right Wing Deck Switch Pressed T o Lower)[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 21 Lower Cutting Deck A three section gear pump is coupled to the piston (trac- tion) pump. The gear pump section (P3) farthest from the piston pump supplies hydraulic flow to the lift control manifold, the steering/cooling fan control manifold and the traction charge circuit. Hydraulic flow from [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 22 PTO Mow Circuit (All Deck Motors Rotating) Working Pressure Low Pressure (Charge) Return or Suction Flow REAR WHEEL MOTORS FRONT WHEEL MOTORS REV FOR CHG[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 23 PTO Mow Circuit A three section gear pump is coupled to the piston (trac- tion) pump. Hydraulic flow for the PT O mow circuit is supplied by two (2) sections of the gear pump. The gear pump section (P1) closest to the piston pump supplies hydraulic flow in series to the right and left decks, wh[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 24 PT O Mow Circuit Cutting Deck Blade Braking When the operator turns the PT O switch OFF or if a deck is raised with the PT O switch ON, PTO control manifold solenoid valve (S) is de - - energized causing logic car- tridge (LC1) to shift (refer to information in PTO Mow Cir- cuit in this section[...]

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Groundsmaster 5900/5910 Hydraulic System Page 4 - - 26 Steering Circuit (Left T urn Shown) Working Pressure Low Pressure (Charge) Return or Suction Flow REAR WHEEL MOTORS FRONT WHEEL MOTORS REV FOR CHG[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 27 Steering Circuit A three section gear pump is coupled to the piston (trac- tion) pump. The gear pump section (P3) farthest from the piston pump supplies hydraulic flow to the steering/ cooling fan control manifold, the lift control manifold and the traction charge circuit. Hydraulic flow from p[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 28 Engine Cooling Fan Circuit (Forward Direction Shown) Working Pressure Low Pressure (Charge) Return or Suction Flow REAR WHEEL MOTORS FRONT WHEEL MOTORS REV FOR CHG[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 29 Engine Cooling Fan Circuit A three section gear pump is coupled to the piston (trac- tion) pump. The gear pump section (P3) farthest from the piston pump supplies hydraulic flow to the steering/ cooling fan control manifold, the lift control manifold and the traction charge circuit. Hydraulic f[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 30 Special T ools Order special tools from your T oro Distributor . Hydraulic Pressure T est Kit Use to take various pressure readings for diagnostic tests. Quick disconnect fittings provided attach directly to mating fittings on machine test ports without tools. A high pressure hose is provided f[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 31 Hydraulic T est Fitting Kit This kit includes a variety of O - - ring Face Seal fittings to enable you to connect test gauges into the system. The kit includes: tee’s, unions, reducers, plugs, caps and male test fittings. T oro Part Number: TOR4079 Figure 18 TORO TEST FITTING KIT (NO. T OR407[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 32 Rear Wheel Hub Puller The rear wheel hub puller allows safe removal of the wheel hub from the rear wheel motor shaft. T oro Part Number: TOR6100 Figure 21[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 33 T roubleshooting The charts that follow contain information to assist in troubleshooting hydraulic circuit problems. There may possibly be more than one cause for a machine mal- function. Refer to the T esting section of this Chapter for precau- tions and specific hydraulic test procedures. Gen[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 34 T raction Problems Problem Possible Causes Machine operates in one direction only . System charge check valve and/or system relief valve is defective. Pilot direction valve in 4WD control manifold is damaged or sticking. T raction control potentiometer is faulty . T raction pedal is sluggish. T[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 35 PTO P roblems Problem Possible Causes Cutting decks do not operate. NOTE: Decks have to be fully lowered and traction speed needs to be in MOW for decks to operate. An electrical problem exists (see Chapter 5 - - Electrical System). Gear pump is worn or damaged. One cutting deck motor will not [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 36 Steering Circuit Problems Problem Possible Cause Steering inoperative or sluggish. Steering components (e.g. tie rods, steering cylinder ends) are worn or binding. Steering cylinder is binding. Oil level in hydraulic reservoir is low (other hydraulic systems af- fected as well). Steering relief[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 37 Lift/Lower Problems Problem Possible Causes Cutting deck will not raise. Engine RPM is too low . Hydraulic oil level in reservoir is low . Lift arm pivots are binding. Lift cylinder is damaged. Relief valve in lift control manifold is stuck. Pilot valve in lift control manifold is damaged or st[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 38 T esting The most effective method for isolating problems in the hydraulic system is by using hydraulic test equipment such as pressure gauges and flow meters in the circuits during various operational checks (see the Special T ools section in this Chapter). Before Performing Hydraulic T ests I[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 39 Which Hydraulic T ests Are Necessary? Before beginning any hydraulic test, identify if the prob- lem is related to the traction circuit, PT O (mow) circuit, lift circuit or steering/engine cooling fan circuit. Once the faulty system has been identified, perform tests that re- late to that circu[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 40 T raction Circuit Charge Pressure T est (Using Pressure Gauge) Figure 22 REV FOR CHG TO FRONT DECK CONTROL VAL VE TO LEFT DECK CONTROL V ALVE TO DECK LIFT CONTROL V ALVE TO FLUSH V ALVE TO TRACTION CONTROL VA LV E P O RT P TO FRO NT WHEEL MOT ORS PORT P1 TO FIL TER MANIFOLD PORT CD1 TO FI L T E[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 41 Procedure for T raction Circuit Charge Pressure T est 1. Make sure hydraulic oil is at normal operating tem- perature by operating the machine for approximately 10 minutes. Make sure the hydraulic tank is full. 2. Park machine on a level surface with the cutting decks lowered and off. Make sure[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 42 T raction Circuit Relief Pressure T est (Using Pressure Gauge) Figure 24 FORW ARD RELIEF V AL VE TEST SHOWN REV FOR CHG TO FRONT DECK CONTROL VAL VE TO LEFT DECK CONTROL V ALVE TO DECK LIFT CONTROL V ALVE TO FLUSH V ALVE TO TRACTION CONTROL VA LV E P O RT P TO FRO NT WHEEL MOT ORS PORT P1 TO FI[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 43 Procedure for T raction Circuit Relief Pressure T est 1. Make sure hydraulic oil is at normal operating tem- perature by operating the machine for approximately 10 minutes. Make sure the hydraulic tank is full. Perform T raction Circuit Relief Pressure T est in an open area, away from people an[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 44 Rear T raction Circuit (RV) Relief Pressure T est (Using Pressure Gauge) Figure 26 REAR WHEEL MOTORS FRONT WHEEL MOTORS REV FOR CHG TO F RO NT DE CK STEER/F AN CONTROL V AL VE TO C H P ORT O F DECK LIFT CONTROL VAL VE TO P1 PORT OF CONTROL V AL VE TO LEFT DECK CONTROL V AL VE TO CD PORT OF STEE[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 45 Procedure for Rear T raction Circuit (RV) Relief Pres - sure T est 1. Make sure hydraulic oil is at normal operating tem- perature by operating the machine for approximately 10 minutes. Make sure the hydraulic tank is full. 2. Park machine on a level surface with the cutting decks lowered and o[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 46 T raction Circuit Reducing V alve (PR) Pressure T est (Using Pressure Gauge) Figure 28 REAR WHEEL MOTORS FRONT WHEEL MOTORS REV FOR CHG TO F RO NT DE CK STEER/F AN CONTROL V AL VE TO C H P ORT O F DECK LIFT CONTROL VAL VE TO P1 PORT OF CONTROL V AL VE TO LEFT DECK CONTROL V AL VE TO CD PORT OF [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 47 Procedure for T raction Circuit Reducing V alve (PR) Pressure T est 1. Make sure hydraulic oil is at normal operating tem- perature by operating the machine for approximately 10 minutes. Make sure the hydraulic tank is full. 2. Park machine on a level surface with the cutting decks lowered and [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 48 Counterbalance Pressure T est (Using Pressure Gauge) Figure 30 FLOW FROM GEAR PUMP TO OIL FIL TER TO OIL RESERVOIR TO GEAR PUMP SUCTION TO OIL RESERVOIR PRESSURE GAUGE[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 49 Procedure for Counterbalance Pressure T est 1. Make sure hydraulic oil is at normal operating tem- perature by operating the machine for approximately 10 minutes. Make sure the hydraulic tank is full. 2. Park machine on a level surface with the cutting decks lowered and off. Make sure engine is[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 50 Cutting Deck Circuit Pressure T est (Using Pressure Gauge) Figure 32 RELIEF V AL VE TEST SHOWN REV FOR CHG TO FIL TER MANIFOLD PORT CD1 TO FI L T ER MANIFOLD P ORT P TO HYDRAULIC RESERVOIR TO FLUSH V ALVE TO TRACTION CONTROL VA LV E P O RT P TO FRO NT WHEEL MOT ORS PORT P1 TO OIL FIL TER TRACTI[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 51 Procedure for Cutting Deck Circuit Pressure T est 1. Make sure hydraulic oil is at normal operating tem- perature by operating the machine for approximately 10 minutes. Make sure the hydraulic tank is full. 2. Park machine on a level surface with the cutting decks lowered and off. Make sure eng[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 52 Lift/Lower Circuit Relief Pressure T est (Using Pressure Gauge) Figure 36 FLOW FROM GEAR PUMP TO OIL FIL TER TO OIL RESERVOIR TO GEAR PUMP SUCTION TO OIL RESERVOIR PRESSURE GAUGE The lift/lower circuit relief valve pressure test should be performed to make sure that the lift circuit relief pres[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 53 Procedure for Lift/Lower Circuit Relief Pressure T est NOTE: Before attempting to check or adjust lift pres- sure, make sure that counterbalance pressure is cor- rectly adjusted. 1. Make sure hydraulic oil is at normal operating tem- perature by operating the machine for approximately 10 minute[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 54 Steering Circuit Relief Pressure T est (Using Pressure Gauge) Figure 38 STEERING WHEEL TURNED FOR RIGHT TURN FLOW FROM GEAR PUMP TO OIL FIL TER TO OIL RESERVOIR TO GEAR PUMP SUCTION TO OIL RESERVOIR PRESSURE GAUGE The steering circuit relief valve pressure test should be performed to make sure [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 55 Procedure for Steering Circuit Relief Pressure T est 1. Make sure hydraulic oil is at normal operating tem- perature by operating the machine for approximately 10 minutes. Make sure the hydraulic tank is full. 2. Park machine on a level surface with the cutting decks lowered and off. Make sure [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 56 Steering Cylinder Internal Leakage T est Figure 41 FROM STEER/F AN CONTROL V AL VE PORT CF TO OI L FIL TER FROM STEER/F AN CONTROL V AL VE PORT LS LOOK FOR PLUG (FULL Y EXTENDED) LEAKAGE (FULL Y RETRACTED) STEERING WHEEL TURNED FOR RIGHT TURN The steering cylinder internal leakage test should b[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 57 Procedure for Steering Cylinder Internal Leakage T est 1. Make sure hydraulic oil is at normal operating tem- perature. 2. Park machine on a level surface with the cutting decks lowered and off. Make sure engine is of f and the parking brake is applied. CAUTION Prevent personal injury and/or da[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 58 Gear Pump (P3) (Steering, Cooling Fan, Lift/Lower and T raction Charge) Flow T est (Us - ing T ester with Pressure Gauges and Flow Meter) Figure 42 REV FOR CHG TO FRONT DECK CONTROL VAL VE TO LEFT DECK CONTROL V ALVE TO DECK LIFT CONTROL V ALVE TO FLUSH V ALVE TO TRACTION CONTROL VA LV E P O RT[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 59 Procedure for Gear Pump (P3) Flow T est 1. Make sure hydraulic oil is at normal operating tem- perature by operating the machine for approximately 10 minutes. Make sure the hydraulic tank is full. 2. Park machine on a level surface with the cutting decks lowered and off. Make sure engine is of [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 60 Adjustments Adjustable Pressure V alve The mow/transport and lift control manifolds include ad- justable pressure valves. An adjustment may be re- quired to these valves if testing determines that the circuit pressure setting is incorrect (see TESTING in this chapter). Use the following process[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 61 Service and Repairs General Precautions for Removing and Installing Hydraulic System Components Before Repair or Replacement of Components 1. Before removing any parts from the hydraulic sys- tem, park machine on a level surface, apply parking brake, lower cutting decks or attachments and stop [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 62 Flush Hydraulic System IMPORT ANT : Flush the hydraulic system any time there is a severe component failure or the system is contaminated (oil appears milky , black or contains metal particles). 1. Park machine on a level surface. Lower cutting decks, stop engine and apply parking brake. Remove[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 63 IMPORT ANT : Before plugging the wire harness power connector to the engine ECM, make sure that the ignition switch is in the OFF position and the key is removed from the switch. If the harness power connector is plugged into the engine ECM while electrical power is on, the ECM will be damaged.[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 64 Charge Hydraulic System NOTE: When initially starting the hydraulic system with new or rebuilt components such as motors, pumps or lift cylinders, it is important that the hydraulic system be charged properly . Air must be purged from the system and its components to reduce the chance of damage[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 65 12. Raise one front and one rear wheel off the ground and place appropriate jackstands under the frame to support the machine. Chock remaining wheels to pre- vent movement of the machine. 13. Make sure traction pedal is in the neutral position. Start engine and run it at low idle speed (1350 RP[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 66 Hydraulic Reservoir 1. Bushing 2. Elbow fitting 3. Latch plate 4. Socket head screw (2 used) 5. Magnetic catch 6. Hinge bracket (2 used) 7. Push nut (2 used) 8. Socket head screw (2 used) 9. T ank cover 10. Rod 11 . O - - r i n g 12. Reservoir cap 13. O - - ring 14. Stand pipe 15. Dipstick 16. [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 67 Removal (Fig. 49) 1. Park machine on a level surface, lower cutting decks, stop engine, apply parking brake and remove key from the ignition switch. 2. Read the General Precautions for Removing and Installing Hydraulic System Components at the begin- ning of the Service and Repairs section of t[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 68 Gear Pump 1. Gear pump 2. 90 o hydraulic fitting 3. Piston pump 4. Quick fitting 5. Dust cap 6. Cap screw (2 used) 7. Hydraulic adapter 8. Flat washer (2 used) 9. 90 o hydraulic fitting 10. Clamp 1 1. Hose (from filter) 12. Cap screw (2 used) 13. 90 o hydraulic fitting 14. O - - ring 15. O - - [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 69 Removal (Fig 51) 1. Park machine on a level surface, lower cutting decks, stop engine, apply parking brake and remove key from the ignition switch. 2. Remove hood to gain access to gear pump (see Hood Removal in the Service and Repairs section of Chapter 7 - - Chassis). 3. Drain the hydraulic r[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 70 Gear Pump Service 1. Socket head screw (8 used) 2. Seal ring 3. Deflecting plate 4. Rear cover 5. Drive gear 6. Deflecting plate 7. Load seal 8. Pre - - load seal 9. Idler gear 10. Gear housing 1 1. Dowel pin (6 used) 12. Drive coupler 13. Gear housing 14. Bearing plate 15. Gear housing 16. Dri[...]

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Groundsmaster 5900/5910 Hydraulic System Page 4 - - 72 T raction Circuit 1. Piston (traction) pump 2. Gear pump 3. LH front wheel motor 4. T raction control manifold 5. RH front wheel motor 6. 4WD control manifold 7. T raction flush manifold 8. RH rear wheel motor 9. LH rear wheel motor Figure 53 FRONT RIGHT 2 1 5 4 3 7 6 9 8 Figure 53 illustrates [...]

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Groundsmaster 5900/5910 Hydraulic System Page 4 - - 74 Piston (T raction) Pump 1. Gear pump 2. 90 o hydraulic fitting 3. Piston pump 4. Quick fitting 5. Dust cap 6. Cap screw (2 used) 7. Hydraulic adapter 8. Flat washer (2 used) 9. 90 o hydraulic fitting 10. Clamp 1 1. Hose (from filter) 12. Cap screw (2 used) 13. 90 o hydraulic fitting 14. O - - r[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 75 Removal (Fig. 54) 1. Park machine on a level surface, lower cutting decks, stop engine, apply parking brake and remove key from the ignition switch. 2. Remove hood to gain access to hydraulic pumps (see Hood Removal in the Service and Repairs section of Chapter 7 - - C hassis). 3. Drain the hyd[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 76 Piston (T raction) Pump Service 1. Rotary group 2. Stroking piston assembly 3. Port plate assembly 4. Pump support plate assembly 5. EP control assembly 6. Gasket 7. Socket head screw (4 used) 8. Dowel pin (2 used) 9. Plug 10. Retaining ring 1 1. Shaft seal 12. Retaining ring 13. Joint pin 14. [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 77 NOTE: For piston (traction) pump repair procedures, see the Rexroth V ariable Pump A10VG Repair Instruc- tions and Repair Manual at the end of this chapter . IMPORT ANT : If a piston (traction) pump failure oc - curred, refer to T raction Circuit Component Failure in the General Information sec[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 78 Front Wheel Motors 1. Front wheel motor 2. Splined brake shaft 3. Internal retaining ring 4. Planetary assembly 5. Gasket 6. Front wheel assembly 7. Brake assembly (LH shown) 8. Flange head screw (6 per planetary) 9. O - - ring 10. Flange head screw (4 per brake) 1 1. Cap screw (2 used per moto[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 79 Removal (Fig. 56) 1. Park machine on a level surface, lower cutting decks, stop engine, apply parking brake and remove key from the ignition switch. 2. Read the General Precautions for Removing and Installing Hydraulic System Components at the begin- ning of the Service and Repairs section of t[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 80 Front Wheel Motor Service 1. Drive shaft 2. Backplate 3. Housing assembly 4. Rotating assembly 5. Cam plate insert 6. Retaining ring 7. Cap screw (6 used) 8. Shaft seal 9. Retaining ring 10. Thrust race 11 . O - - r i n g 12. V alve plate 13. Thrust bearing 14. Roll pin 15. Roll pin 16. Bearing[...]

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Groundsmaster 5900/5910 Hydraulic System Page 4 - - 82 Rear Wheel Motors 1. Rear tire 2. Lug nut (6 used per wheel) 3. Cap screw (4 used per motor) 4. Lock washer (4 used per motor) 5. LH wheel motor 6. V alve stem 7. Tie rod assembly 8. RH steering spindle 9. RH wheel motor 10. Hex nut 1 1. Square key 12. Wheel stud (6 used per wheel) 13. Wheel hu[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 83 5. Remove rear wheel assembly from the machine (see Rear Wheel Removal in the Service and Repairs section of Chapter 6 - - C hassis). IMPORT ANT : DO NOT hit wheel hub, wheel hub puller or wheel motor with a hammer during removal or installation. Hammering may cause damage to the wheel motor . [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 84 Rear Wheel Motor Service 1. Cap screw (7 used) 2. Commutator assembly 3. Manifold 4. Stator assembly 5. Wear plate 6. Drive link 7. Shaft seal 8. Back - - up washer 9. End cover 10. Commutator ring 1 1. Body seal (5 used) 12. Thrust bearing 13. Coupling shaft 14. Back - - up ring 15. Housing 16[...]

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Groundsmaster 5900/5910 Hydraulic System Page 4 - - 86 T raction Control Manifold FRONT RIGHT 1. T raction control manifold 2. Flange head screw (4 used) 3. Front PTO control manifold 4. Planetary assembly 5. LH front wheel motor 6. Front wheel assembly 7. Frame assembly 8. Brake assembly Figure 61 4 6 2 3 7 8 5 1 NOTE: The ports on the traction co[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 87 Removal (Fig. 61) 1. Read the General Precautions for Removing and Installing Hydraulic System Components at the begin- ning of the Service and Repairs section of this chapter . 2. T o prevent contamination of hydraulic system during manifold removal, thoroughly clean exterior of manifold and f[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 88 T raction Control Manifold Service 20 ft - - lb (27 N - - m) 75 ft - - lb (101 N - - m) 5 f t- -l b (6.7 N - - m) 50 ft - - lb (67 N - - m) 6 7 12 13 10 8 2 3 1 11 9 14 15 16 4 5 3 6 7 20 ft - - lb (27 N - - m) 20 ft - - lb (27 N - - m) 20 ft - - lb (27 N - - m) 20 ft - - lb (27 N - - m) 75 ft [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 89 V alve Cartridge Service 1. Make sure the entire outer surface of the manifold is clean before removing the valve. 2. If cartridge is solenoid operated, remove nut secur- ing solenoid coil to the cartridge valve. Carefully slide solenoid coil off the valve. IMPORT ANT : Use care when handling t[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 90 4WD Control Manifold 1. 4WD control manifold 2. O - - ring 3. O - - ring 4. Hydraulic tee fitting 5. Hydraulic tee fitting 6. Flange nut 7. Bulkhead mount plate 8. Flange nut (2 used) 9. Cap screw 10. Cap screw (2 used) 1 1. Flush manifold 12. Flange screw (4 used) Figure 64 6 10 8 2 3 1 11 9 7[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 91 Removal (Fig. 64) 1. Read the General Precautions for Removing and Installing Hydraulic System Components at the begin- ning of the Service and Repairs section of this chapter . 2. T o prevent contamination of hydraulic system during manifold removal, thoroughly clean exterior of manifold and f[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 92 4WD Control Manifold Service 1. Orifice (0.040) (OR2) 2. Plug with O - - r ing 3. NWD #6 plug with O - - ring 4. NWD #8 plug with O - - ring 5. Solenoid valve (SV) 6. Solenoid coil 7. Nut 8. Check valve (CV) 9. NWD #4 plug with O - - ring 10. Directional pilot valve (PD2) 1 1. Orifice (0.030) ([...]

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Groundsmaster 5900/5910 Hydraulic System Page 4 - - 94 T raction Flush Manifold 1. 4WD control manifold 2. O - - ring 3. O - - ring 4. Hydraulic tee fitting 5. Hydraulic tee fitting 6. Flange nut 7. Bulkhead mount plate 8. Flange nut (2 used) 9. Cap screw 10. Cap screw (2 used) 1 1. Hydraulic oil temp sender 12. O - - ring 13. Flush manifold assemb[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 95 4. Support flush manifold to prevent it from falling. Re- move two (2) cap screws and flange nuts that secure manifold to frame (Fig. 67). Remove flush manifold from the machine. 5. If hydraulic fittings are to be removed from flush man- ifold, mark fitting orientation to allow correct assembly[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 96 PT O Circuit 1. Gear pump 2. RH PTO control manifold 3. Hydraulic hose to oil cooler 4. Hydraulic hose from oil cooler 5. LH PTO control manifold 6. LH cutting deck motor 7. Filter manifold 8. RH cutting deck motor 9. Front cutting deck motor 10. Front PTO control manifold Figure 69 FRONT RIGHT[...]

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Groundsmaster 5900/5910 Hydraulic System Page 4 - - 98 Cutting Deck Motor 1. Hydraulic hose 2. O - - ring 3. Cutting deck motor 4. Flange head screw (2 used) 5. 90 o hydraulic fitting 6. O - - ring 7. Hydraulic hose 8. Hex nut 9. Spindle assembly 10. Motor mount 1 1. Spider 12. W asher 13. Spider hub 14. Woodruff key 15. Mounting shim (if equipped)[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 99 2. If removed, install woodruff key and spider hub to motor s haft. Secure with washer and hex nut. T orque nut from 27 to 33 ft - - lb (37 to 44 N - - m) . 3. Check for proper clearance between spider hub and spindle pulley . Install motor to cutting deck without plac- ing the spider in the sp[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 100 Cutting Deck Motor Service 1. Rear cover 2. Drive gear 3. Shaft seal 4. Retaining ring 5. Flange washer 6. Front wear plate 7. Dust seal 8. Pressure seal 9. Back - - up gasket 10. O - - ring 1 1. Body 12. Idler gear 13. Cap screw (4 used) 14. Front flange 15. Dowel pin (4 used) 16. Washer (4 u[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 101 6. Remove motor from t he vise and remove cap screws. 7. Remove rear cover from the body . 8. Carefully remove body . Lift body straight up to re- move. Make sure the rear wear plate remains on the drive and idler gear shafts. Remove and discard O - - rings from the body . Locate and retrieve [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 102 2. Install new seals into front flange (Fig. 76): A. Press shaft seal into front flange until it reaches the bottom of the bore. B. Install flange washer into front flange and then install retaining ring into the groove of the front flange. C. Install new dust seal into front flange. 3. Place [...]

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Groundsmaster 5900/5910 Hydraulic System Page 4 - - 104 PT O Control Manifolds 1. Front PTO control manifold 2. RH PTO control manifold 3. LH PTO control manifold 4. T raction control manifold 5. Cap screw (2 used per manifold) 6. Flange nut (2 used per manifold) 7. Main frame 8. Front axle frame Figure 77 FRONT RIGHT 4 6 1 7 5 5 2 3 5 6 8[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 105 The control manifolds for the three cutting deck s ections are very similar . Note: When servicing the PT O control manifolds, DO NOT interchange parts from one control manifold to another . NOTE: The ports on the PTO control manifolds are marked for easy identification of components. Example:[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 106 3. Remove caps and plugs from fittings and hoses. Properly connect hydraulic lines to manifold (see Hy- draulic Hose and T ube Installation in the General Infor- mation section of this chapter). 4. Connect wire harness connector to the solenoid valve. 5. Make sure hydraulic tank is full. Add c[...]

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Groundsmaster 5900/5910 Hydraulic System Page 4 - - 108 PT O Control Manifold Service 1. Manifold body 2. Relief valve (RV2) 3. Solenoid valve (S) 4. Solenoid coil 5. Nut 6. Relief valve (RV1) 7. Spool logic element (LC1 & LC2) 8. Orifice (OR) (RH and LH only) 9. NWD #4 plug with O - - ring 10. NWD #8 plug with O - - ring Figure 81 6 10 8 2 3 1[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 109 V alve Cartridge Service (Fig. 81) The control manifolds for the three cutting deck s ections are very similar . The manifold for the right and left side decks include an orifice (item 8) that is not used on the front deck manifold. Also, relief valve (RV1) on the right side manifold is set to[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 1 10 Filter Manifold 1. Cap screw & lock washer (4 used) 2. Split flange 3. Fitting 4. O - - ring 5. Filter manifold 6. NWD #6 plug with O - - ring 7. O - - ring 8. Straight fitting (T) 9. O - - ring 10. Straight fitting (T2) 11 . O - - r i n g 12. 90 o hydraulic fitting (CD2) 13. O - - ring 1[...]

Groundsmaster 5900/5910 Hydraulic System P a g e 4 - - 111 6. If hydraulic fittings are to be removed from filter man- ifold, mark fitting orientation to allow correct assembly . Remove fittings from manifold and discard O - - rings. Installation (Figs. 82 and 83) 1. If fittings were removed from manifold: A. Lubricate new o - - rings with clean hy[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 1 12 Hydraulic Oil Cooler 1. Oil cooler 2. O - - ring 3. Clamp (2 used) 4. Cap screw (2 used) 5. W asher (4 used) 6. Flange nut (4 used) 7. Hydraulic hose (2 used) 8. Flange nut (4 used) 9. Support plate (2 used) 10. Cap screw (4 used) 1 1. Radiator assembly 12. Bumper (2 used) Figure 84 FRONT RIG[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 1 13 Removal (Fig. 84) CAUTION The radiator and oil cooler may be hot. T o avoid possible burns, allow the engine and cooling systems to cool before working on t he oil cooler . 1. Park machine on a level surface, lower cutting decks, stop engine, apply parking brake and remove key from the igniti[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 1 14 Cutting Deck Raise/Lower Circuit 1. Gear pump 2. LH cutting deck lift cylinder 3. Front cutting deck lift cylinder 4. RH cutting deck lift cylinder 5. Lift control manifold Figure 85 2 3 1 4 FRONT RIGHT 5 3 Figure 85 illustrates the components that are used in the Groundsmaster cutting deck r[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 1 15 This page is intentionally blank. Hydraulic System[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 1 16 Front Deck Lift Cylinder 1. Lift cylinder 2. Lift arm (LH shown) 3. Flange nut 4. Pin 5. Flange head screw 6. Grease fitting 7. O - - ring 8. 90 o hydraulic fitting 9. O - - ring 10. Cotter pin (2 used per pin) 1 1. Clevis pin 12. Plug 13. Flat washer (4 used per pin) Figure 86 FRONT RIGHT 7 [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 1 17 Removal (Fig. 86) 1. Park machine on a level surface, lower cutting decks, stop engine, apply parking brake and remove key from the ignition switch. 2. Read the General Precautions for Removing and Installing Hydraulic System Components at the begin- ning of the Service and Repairs section of[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 1 18 Front Deck Lift Cylinder Service 1. Barrel with clevis 2. Retaining ring 3. Shaft with clevis 4. Dust seal 5. Shaft seal 6. O - - ring 7. Back - - up ring 8. Head 9. Piston seal 10. Wear ring 11 . P i s t o n 12. Lock nut 13. O - - ring Figure 87 12 11 9 10 7 6 5 8 4 3 1 2 13 12 11 9 10 7 6 5[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 1 19 Disassembly (Fig. 87) 1. Remove oil from lift cylinder into a drain pan by slowly pumping the cylinder shaft. Plug both ports and clean the outside of the cylinder . IMPORT ANT : Prevent damage when clamping the cylinder ’ s barrel into a vise; clamp on the clevis only . Do not close vise o[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 120 Wing Deck Lift Cylinder 1. Wing deck lift arm (LH shown) 2. Pin 3. Grease fitting 4. Flange nut 5. Pin 6. Cap screw 7. Hydraulic fitting (2 used per cylinder) 8. Wing deck lift cylinder (LH shown) 9. O - - ring 10. O - - ring 1 1. Jam nut (4 used per pin) Figure 88 FRONT RIGHT 4 6 5 8 2 11 9 7[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 121 Removal (Fig. 88) 1. Park machine on a level surface, lower cutting decks, stop engine, apply parking brake and remove key from the ignition switch. 2. Read the General Precautions for Removing and Installing Hydraulic System Components at the begin- ning of the Service and Repairs section of [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 122 Wing Deck Lift Cylinder Service 1. Barrel with clevis 2. External collar 3. Shaft with clevis 4. Dust seal 5. Shaft seal 6. O - - ring 7. Back - - up ring 8. Head 9. O - - ring 10. Cushion 11 . P i s t o n 12. Lock nut 13. Wear ring 14. Piston seal 15. Steel ring 16. Wear ring Figure 89 12 11 [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 123 Disassembly (Fig. 89) 1. Remove oil from lift cylinder by slowly pumping the cylinder shaft. After removing oil from cylinder , plug both ports and clean the outside of the cylinder . IMPORT ANT : Prevent damage when clamping the cylinder ’ s barrel into a vise; clamp on the barrel cle- vis [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 124 Lift Control Manifold 1. Battery 2. Lift control manifold 3. W ater separator assembly 4. Flange head screw (3 used) 5. Flange head screw (4 used) 6. Mounting plate 7. Hydraulic filter 8. Flange nut (3 used) 9. Frame Figure 90 FRONT RIGHT 2 1 9 3 7 8 5 6 4 106 to 159 in - - lb (12.0 to 17.9 N [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 125 7. If hydraulic fittings are to be removed from manifold, mark fitting orientation to allow correct assembly . Re- move fittings from manifold and discard O - - rings. Installation (Fig. 90) 1. If fittings were removed from manifold: A. Lubricate new O - - rings with clean hydraulic oil. Insta[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 126 Lift Control Manifold Service 1. Lift manifold 2. Solenoid valve (S2, S3, S7 and S8) 3. Solenoid coil (5 used) 4. Solenoid nut 5. Solenoid valve (S4 and S9) 6. Solenoid coil (4 used) 7. Solenoid nut 8. Solenoid valve (S1) 9. Relief valve (RV) 10. Solenoid valve (S5) 1 1. Solenoid valve (S6) 12[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 127 NOTE: The ports on the lift control manifold are marked for easy identification and assembly of components. Ex- ample: P1 is the supply port from the gear pump and FD is the flow divider cartridge location (see Hydraulic Schematic in Chapter 10 - - Foldout Drawings to identify the function of [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 128 Steering and Engine Cooling Fan Circuit 1. Steering control valve 2. Oil filter 3. Steering/cooling fan control manifold 4. Steering cylinder (2 used) 5. Engine cooling fan motor Figure 94 FRONT RIGHT 2 1 3 4 5 4 Figure 94 illustrates the components that are used in the Groundsmaster steering [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 129 This page is intentionally blank. Hydraulic System[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 130 Steering Control V alve 1. Steering tower cover 2. Flange head screw 3. Cap screw (2 used) 4. Pivot hub (3 used) 5. Steering column assembly 6. Thrust washer (4 used) 7. Steering tower 8. Hydraulic fitting (5 used) 9. O - - ring 10. Steering control valve 11 . O - - r i n g 12. Flange bushing [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 131 Removal (Fig. 95) 1. Park machine on a level surface, lower cutting decks, stop engine, apply parking brake and remove key from the ignition switch. 2. Read the General Precautions for Removing and Installing Hydraulic System Components at the begin- ning of the Service and Repairs section of [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 132 Steering Control V alve Service 1. Steering valve housing 2. Dust seal 3. O - - ring 4. Spool 5. Spring retaining ring 6. Pin 7. Sleeve 8. Centering springs/spacers 9. Cap screw (7 used) 10. End cap 11 . O - - r i n g 12. Seal ring 13. O - - ring 14. Geroter 15. O - - ring 16. Quad seal 17. Ge[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 133 This page is intentionally blank. Hydraulic System[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 134 Steering Cylinders 1. Slotted hex nut 2. LH steering spindle 3. Ball joint 4. Hex nut 5. Grease fitting 6. Cotter pin 7. Tie rod assembly 8. Slotted hex nut 9. O - - ring 10. 45 o hydraulic fitting 1 1. Steering cylinder 12. Cap screw 13. O - - ring 14. 90 o hydraulic fitting 15. Rear axle Fig[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 135 Removal (Fig. 98) 1. Park machine on a level surface, lower cutting decks, stop engine, apply parking brake and remove key from the ignition switch. 2. Read the General Precautions for Removing and Installing Hydraulic System Components at the begin- ning of the Service and Repairs section of [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 136 Steering Cylinder Service 1. Grease fitting 2. Cap screw 3. Lock nut 4. Ball joint 5. Snap ring 6. Piston rod 7. Rod wiper 8. Rod seal 9. Head 10. Back - - up ring 11 . O - - r i n g 12. O - - ring 13. Piston 14. Slipper seal 15. O - - ring 16. Lock nut 17. Barrel 18. Roll pin 19. Jam nut 20. [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 137 Disassembly (Fig. 99) 1. Remove oil from steering cylinder by slowly pumping the piston rod. After removing oil from cylinder , plug both ports and thoroughly clean the outside of the cylinder . 2. Remove snap ring (item 5) that secures head in bar- rel. 3. Grasp end of piston rod and use a tw[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 138 Engine Cooling Fan Motor 1. Socket head screw (2 used) 2. Cooling fan motor 3. 90 o hydraulic fitting 4. Fan hub 5. Flat washer 6. Hex nut 7. O - - ring 8. Woodruff key 9. O - - ring 10. Fan motor bracket 1 1. Lock nut (2 used) 12. Cooling fan 13. Flange head screw (6 used) 14. Oil cooler 15. [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 139 Removal (Fig. 101) 1. Park machine on a level surface, lower cutting decks, stop engine, apply parking brake and remove key from the ignition switch. 2. Read the General Precautions for Removing and Installing Hydraulic System Components at the begin- ning of the Service and Repairs section of[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 140 Engine Cooling Fan Motor Service 1. Rear cover 2. Drive gear 3. Shaft seal 4. Flange washer 5. Retaining ring 6. Front wear plate 7. Dust seal 8. Pressure seal 9. Back - - up gasket 10. O - - ring 1 1. Body 12. Idler gear 13. Cap screw (4 used) 14. Front flange 15. Dowel pin (4 used) 16. Washe[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 141 This page is intentionally blank. Hydraulic System[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 142 Steering/Engine Cooling Fan Control Manifold 1. Bulkhead mount plate 2. Flange nut (3 used) 3. Steering/cooling fan manifold 4. Carriage bolt 5. Flange head screw (7 used) 6. T ube mount plate 7. T ube clamp 8. Flange nut 9. Manifold mount plate 10. Cap screw (3 used) Figure 103 FRONT RIGHT 1 [...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 143 IMPORT ANT : An orifice is placed beneath t he hy- draulic fitting in the control manifold LS port. If this fitting is removed from manifold, make sure to re- move orifice and label its position for assembly pur- poses. 7. If hydraulic fittings are to be removed from manifold, mark fitting ori[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 144 Steering/Engine Cooling Fan Control Manifold Service 1. Steering/cooling fan manifold 2. NWD #8 plug with O - - ring 3. Relief valve (RV) 4. Solenoid nut 5. Solenoid coil 6. Proportional relief valve (PRV) 7. NWD #4 plug with O - - ring (2 used) 8. Check valve (CV) 9. Solenoid coil 10. Solenoi[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 145 NOTE: The ports on the steering/cooling fan manifold are marked for easy identification and assembly of com- ponents. Example: P is the connection port for the sup- ply from the lift control valve and RV is the relief cartridge valve port (see Hydraulic Schematic in Chapter 10 - - Foldout Draw[...]

Groundsmaster 5900/5910 Hydraulic System Page 4 - - 146 This page is intentionally blank.[...]

Groundsmaster 5900/5910 Page 5 - - 1 Electrical System Chapter 5 Electrical System T able of Contents GENERAL INFORMA TION 2 ..................... Operator ’s Manual 2 .......................... T oro Electronic Controllers (TEC) 2 .............. Cummins Engine Electronic Control Module (ECM) 2 ............................ CAN bus Communications [...]

Groundsmaster 5900/5910 Page 5 - - 2 Electrical System General Information Operator ’s Manual The Operator ’s Manual provides information regarding the operation, general maintenance and maintenance intervals for your Groundsmaster machine. Refer to the Operator ’s Manual for additional information when ser- vicing the machine. T oro Electron[...]

Groundsmaster 5900/5910 Page 5 - - 3 Electrical System CAN - - bus Communications The two (2) TEC controllers (TEC - - 5001 and TEC - - 5002), the Cummins Engine Controller and the Info Center Display used on the Groundsmaster 5900 and 5910 communicate with each other on a CAN bus system. Using this system allows the traction unit to fully integrat[...]

Groundsmaster 5900/5910 Page 5 - - 4 Electrical System Special T ools Order special tools from your T oro Distributor . Some tools may also be available from a local supplier . Multimeter The meter can test electrical components and circuits for current, resistance or voltage. NOTE: T oro recommends the use of a D IGIT AL V olt - - Ohm - - Amp mult[...]

Groundsmaster 5900/5910 Page 5 - - 5 Electrical System Battery T erminal Protector Aerosol spray that should be used on battery terminals to reduce corrosion problems. Apply terminal protector after the battery cable has been secured to the battery terminal. T oro Part Number: 107 - - 0392 Figure 4 Battery Hydrometer Use the Battery Hydrometer when[...]

Groundsmaster 5900/5910 Page 5 - - 6 Electrical System T roubleshooting CAUTION Remove all jewelry , especially rings and watches, before doing any electrical trouble- shooting or testing. Disconnect the battery cables unless the test requires battery voltage. For effective troubleshooting and repairs, you must have a good understanding of the elec[...]

Groundsmaster 5900/5910 Page 5 - - 7 Electrical System Starting Problems (Continued) Problem Possible Causes Nothing happens when start attempt is made. Info Center Display operates with the ignition switch in RUN. NOTE: Use Info Center Display to assist with identifying problem. T raction pedal is not in neutral position. Operator seat is unoccupi[...]

Groundsmaster 5900/5910 Page 5 - - 8 Electrical System General Run and T ransport Problems Problem Possible Causes Engine continues to run, but should not, when the ignition switch is turned off. Ignition switch or circuit wiring is faulty . Engine or engine controller is malfunctioning (see Chapter 3 - Diesel Engine). TEC - - 5002 controller is fa[...]

Groundsmaster 5900/5910 Page 5 - - 9 Electrical System Cutting Deck (PT O) Operating Problems Problem Possible Causes The PTO remains engaged, but should not, with no operator in the seat. Seat switch or circuit wiring is faulty . TEC - - 5002 controller is faulty . Cutting decks run, but should not, when raised. Cutting decks shut off with PT O sw[...]

Groundsmaster 5900/5910 Page 5 - - 1 0 Electrical System Cutting Deck Lift/Lower Problems Problem Possible Causes None of the cutting decks will lower . Mow/transport switch is in the transport position. Operator is not fully depressing the seat switch. TEC - - 5001 fuses (4F1, 4F2, 4F3, 4F4) are faulty . Seat switch or circuit wiring is faulty . M[...]

Groundsmaster 5900/5910 Page 5 - - 1 1 Electrical System Info Center Display The Groundsmaster Info Center Display is a LCD device that is located on the steering tower . The Info Center provides information for the machine operator during machine operation, provides electrical system diagnos- tic assistance for technicians and allows inputs for ad[...]

Groundsmaster 5900/5910 Page 5 - - 1 2 Electrical System Info Center controls for brightness and contrast can be accessed by pressing and releasing the right button on the Info Center (Fig. 9). Use the display buttons to change the screen image and to exit the control screen. Operator Advisories Operator advisories are automatically displayed by th[...]

Groundsmaster 5900/5910 Page 5 - - 13 Electrical System 2. The T O LOWER DECK advisory identifies that the cutting deck will not lower when a lower deck switch is pressed (Fig. 1 1): A. SET LOW RANGE. Machine is set to high s peed range and needs to be in low speed before decks will lower . B. SEA T OPERA TOR. Operator needs to be in seat to lower [...]

Groundsmaster 5900/5910 Page 5 - - 1 4 Electrical System 5. The FOR TRACTION ASSIST advisory identifies that the the traction assist system will not engage when the traction assist switch is pressed (Fig. 14). A. SEA T OPERA TOR. Operator needs to be in seat to engage traction assist. B. MUST BE IN LOW RANGE. Machine is set to high speed range and [...]

Groundsmaster 5900/5910 Page 5 - - 15 Electrical System 9. The T O SET RANGE LOW advisory identifies that low speed range will not engage when the Hi - - Lo speed switch is pressed (Fig. 18). A. REDUCE GROUND SPEED. Ground speed needs to be less than 2 MPH in order to engage low speed range. B. DISENGAGE CRUISE. Cruise control is en- gaged and need[...]

Groundsmaster 5900/5910 Page 5 - - 1 6 Electrical System 12. The TO SET RANGE HIGH advisory identifies that high speed range will not engage when the Hi - - Lo speed switch is pressed (Fig. 21). A. LIFT LEFT DECK. Left cutting deck is lowered and needs to be raised before high speed range can be engaged. B. LIFT LEFT DECK FULL Y . Left cutting deck[...]

Groundsmaster 5900/5910 Page 5 - - 17 Electrical System Engine Faults The Info Center monitors critical engine electrical func- tions (e.g. engine oil pressure, engine operating temper- ature) and alerts the operator if potential issues arise. If an engine electrical fault is identified by the Cummins controller , the Info Center will alternately d[...]

Groundsmaster 5900/5910 Page 5 - - 1 8 Electrical System Diagnostics The Info Center DIAGNOSTICS screens allow TEC controller electrical inputs and outputs to be tested. No separate code reader or computer is needed to access the information. Use of the DIAGNOSTICS screens can be used to identify and troubleshoot machine electrical functions. T o a[...]

Groundsmaster 5900/5910 Page 5 - - 19 Electrical System 1. LEFT DECK and RIGHT DECK controls (Fig. 27) NOTE: The cutting decks will not lower when the high speed range is selected. Also, the decks will not raise or lower if the operator is not in the s eat while the engine is running. To lower the left or right cutting deck, the following inputs ha[...]

Groundsmaster 5900/5910 Page 5 - - 2 0 Electrical System 2. CENTER DECK controls (Fig. 28) NOTE: The cutting decks will not lower when the high speed range is selected. Also, the decks will not raise or lower if the operator is not in the s eat while the engine is running. To lower the center (front) cutting deck, the following inputs have to be in[...]

Groundsmaster 5900/5910 Page 5 - - 21 Electrical System 4. TRACTION (Fig. 30) T o engage forward traction, the following inputs have to be initiated: D T raction pedal pushed to forward (FWD NEU- TRAL ON and REV NEUTRAL OFF) D Seat needs to be occupied (SEA T ON) D Parking brake not applied (P ARKING BRAKE OFF) If the listed inputs exist, the follo[...]

Groundsmaster 5900/5910 Page 5 - - 2 2 Electrical System 7. TRACTION ASSIST (Fig. 33) NOTE: T raction assist only engages when low speed range is selected and the traction pedal is pressed in the forward direction. T o engage forward traction assist, the following in- puts have to be initiated: D T raction assist switch depressed to engage trac- ti[...]

Groundsmaster 5900/5910 Page 5 - - 23 Electrical System 10. LIGHT KIT operation (Fig. 36) T o have the left hazard and turn signals operate, the following inputs have to be initiated: D Headlight switch depressed to turn lights on (LIGHTS ON) D Left turn signal switch depressed (LEFT TURN SIGNAL ON) If the listed inputs exist, the following outputs[...]

Groundsmaster 5900/5910 Page 5 - - 2 4 Electrical System Administration Settings The administration SETTINGS screens provide display choices for the Info Center Display . T o access the administration SETTINGS screen (Fig. 37): D Go to MAIN MENU screen by pressing and holding the right button on the Info Center . D Use navigation arrows to choose S[...]

Groundsmaster 5900/5910 Page 5 - - 25 Electrical System 4. PIN SETTINGS (Fig. 41) Use of a PIN allows the ability to password protect access to Info Center SETTINGS screens. If a PIN is desired for Info Center access, use the navigation buttons to change the PIN ENTRY to ON. T o enter PIN, use navigation buttons to accept PIN CHANGE. Use the Info C[...]

Groundsmaster 5900/5910 Page 5 - - 2 6 Electrical System Administration Service T o access the administration SERVICE screens (Fig. 44): Access the MAIN MENU screen by pressing and holding the right button on the Info Center . Use the buttons under the navigation arrows to choose SERVICE Select SER VICE by pressing the button under enter (right arr[...]

Groundsmaster 5900/5910 Page 5 - - 27 Electrical System Administration About The Administration ABOUT screens provide information about the machine, the Info Center Display , the two (2) T oro controllers and the Cummins engine controller . T o access the administration ABOUT screen (Fig. 49): D Go to MAIN MENU screen by pressing and holding the ri[...]

Groundsmaster 5900/5910 Page 5 - - 2 8 Electrical System Electrical System Quick Checks Battery T est (Open Circuit T est) Use a multimeter to measure the voltage between the battery terminals. Set multimeter to the DC volts setting. The battery should be at a temperature of 60 o F to 100 o F( 1 6 o Ct o 38 o C). The ignition key should be OFF and [...]

Groundsmaster 5900/5910 Page 5 - - 29 Electrical System Check Operation of Interlock Switches CAUTION Do not disconnect safety switches. They are for the operator ’ s protection. Check the operation of the interlock switches daily for proper operation. Replace any malfunctioning switches before op - erating the machine. Interlock s witch operatio[...]

Groundsmaster 5900/5910 Page 5 - - 3 0 Electrical System Adjustments T raction Pedal Calibration IMPORT ANT : A properly installed and calibrated traction pedal potentiometer is critical to accurate traction system response and for reliable sensor life. Use care when removing, installing and cali- brating the traction pedal potentiometer . 1. Park [...]

Groundsmaster 5900/5910 Page 5 - - 31 Electrical System T raction Pedal T each 1. Remove the power center console located to the right of the operator seat. 2. Locate wire harness termination cap that connects the two (2) traction pedal T each wires (Fig. 53). 3. Remove termination cap and connect the two (2) T each wires together (Fig. 54). 4. T u[...]

Groundsmaster 5900/5910 Page 5 - - 3 2 Electrical System Component T esting For accurate resistance and/or continuity checks, elec- trically disconnect the component being tested from the circuit (e.g. unplug the wire harness connector from the ignition switch before doing a continuity check of the switch). CAUTION When testing electrical component[...]

Groundsmaster 5900/5910 Page 5 - - 33 Electrical System Fuses The fuse blocks are located to the right of the operator seat under the power center console. Identification and Function (Figs. 57 and 58) Fuse 1F1 (5 Amp) supplies power to ignition switch ter- minal B. Fuse 1F2 (30 Amp) supplies power to the starter sole- noid circuit. Fuse 1F3 (1 Amp[...]

Groundsmaster 5900/5910 Page 5 - - 3 4 Electrical System Maxi Fuses Three (3) 60 amp maxi fuses are used on the Ground- smaster for protection of main electrical circuits. The maxi fuse block is located to the right of the operator seat under the power center console (Fig. 59). Identification and Function (Fig. 60) Maxi Fuse #1 protects the control[...]

Groundsmaster 5900/5910 Page 5 - - 35 Electrical System Mega Fuses T wo (2) mega fuses are used on the Groundsmaster for protection of high amperage circuits. One of the mega fuses is a 125 amp fuse and protects the alternator cir- cuit. The other mega fuse is a 300 amp fuse that is a component in the intake air heater circuit. The mega fuse blocks[...]

Groundsmaster 5900/5910 Page 5 - - 3 6 Electrical System Cab Fuses (Groundsmaster 5910) The cab fuse blocks are located in the cab headliner . Identification and Function (Figs. 63 and 64) Fuse 1F1 (15 Amp) supplies power to the windshield wiper . Fuse 1F2 (15 Amp) supplies power to the heater circuit. Fuse 1F3 (25 Amp) supplies power to the air co[...]

Groundsmaster 5900/5910 Page 5 - - 37 Electrical System PT O Switch The PTO switch is located on the console arm (Fig. 65). The PTO switch is pulled up to engage the PTO (cutting decks or implement). The TEC - - 5002 controller monitors the position of the PTO switch (up or down). Using inputs from the PT O switch and other switches in the interloc[...]

Groundsmaster 5900/5910 Page 5 - - 3 8 Electrical System Cutting Deck Lift Switches The cutting deck lift switches are used as inputs for the TEC - - 5001 controller to raise or lower the cutting decks. When the front of a lift switch is depressed and held, the controlled deck (left, front or right) will lower . When the rear of a lift switch is de[...]

Groundsmaster 5900/5910 Page 5 - - 39 Electrical System T raction Assist Switch The traction assist switch is used as an input for the TEC - - 5001 controller to energize the solenoid valve in the traction control manifold. When the traction assist switch is depressed, hydraulic flow is split equally be- tween front and rear wheels for enhanced tra[...]

Groundsmaster 5900/5910 Page 5 - - 4 0 Electrical System Cruise Control Switch The cruise control switch is used as an input for the TEC - - 5002 controller to maintain ground speed. The cruise control function is engaged (set) when the front of the cruise control switch is depressed. The c ruise control function is disengaged when the rear of the [...]

Groundsmaster 5900/5910 Page 5 - - 41 Electrical System Throttle Control Switch The throttle control switch is used as an input for the en- gine control module to adjust the engine speed to one of three ( 3) RPM settings: low idle (1350 RPM), mid idle (2400 RPM) or high idle (2750 RPM). The throttle con- trol switch is located on the steering tower[...]

Groundsmaster 5900/5910 Page 5 - - 4 2 Electrical System Increment/Decrement Switch The increment/decrement switch is used as an input for the engine control module to raise or lower the engine speed in small amounts. When the switch is depressed and held in the forward position, the engine speed will increase. Conversely , when the rear of the swi[...]

Groundsmaster 5900/5910 Page 5 - - 43 Electrical System Hi - - Lo Speed Switch The hi - - lo speed switch is used as an input for the TEC - - 5001 controller to set the machine traction speed for high speed range (transport) or low speed range (mow). T o change speed range settings with the speed switch, the machine must be stopped or moving very s[...]

Groundsmaster 5900/5910 Page 5 - - 4 4 Electrical System Headlight Switch The headlight switch is used as an input for the TEC - - 5002 controller to provide power for the headlights and taillights. The headlight switch is located on the op- erator side of the control console. T esting 1. Before disconnecting the headlight switch for test- ing, the[...]

Groundsmaster 5900/5910 Page 5 - - 45 Electrical System T urn Signal Switch The turn signal switch is used as an input for the TEC - - 5002 controller to provide power for the turn sig- nals. The switch is located on the steering tower (Fig. 81). T esting 1. Before disconnecting the t urn signal switch for test- ing, the switch and its circuit wiri[...]

Groundsmaster 5900/5910 Page 5 - - 4 6 Electrical System Windshield Wiper/W asher Switch (Groundsmaster 5910) The windshield wiper/washer switch is used to control operation of the windshield wiper and washer pump. The windshield wiper/washer switch is located in the cab headliner (Fig. 83). T esting 1. Make sure igniti on switch is OFF . Remove ke[...]

Groundsmaster 5900/5910 Page 5 - - 47 Electrical System Air Conditioning Switch (Groundsmaster 5910) The air conditioning switch is used to control operation of the air conditioning system. The switch is located in the cab headliner (Fig. 85). T esting 1. Make sure igniti on switch is OFF . Remove key from ignition switch. 2. Remove switch plate fr[...]

Groundsmaster 5900/5910 Page 5 - - 4 8 Electrical System Intake Air Heater Contactor The intake air heater contactor is used on the Ground- smaster 5900 and 5910 to provide current for the engine intake air heater . The contactor is attached to a frame bracket behind the batteries (Fig. 87). The contactor is energized by the engine ECM when low tem[...]

Groundsmaster 5900/5910 Page 5 - - 49 Electrical System Seat Switch The seat switch is normally open and closes when the operator is on the seat. The seat switch is an input for the TEC - - 5002 controller . If the traction system or PTO switch is engaged when the operator raises out of the seat, the traction system or PTO operation will cease. The[...]

Groundsmaster 5900/5910 Page 5 - - 5 0 Electrical System Parking Brake Switch The switch used for the parking brake is a normally open proximity switch that is located under the steering tower cover (Fig. 90). The parking brake switch is an input for the TEC - - 5002 controller . When the parking brake is not applied, a tab on the brake rod is posi[...]

Groundsmaster 5900/5910 Page 5 - - 51 Electrical System Service Brake Switches The two (2) switches used for the service brakes are nor- mally open switches that are located under the footrest panel (Fig. 90). The service brake switches provide in- puts for the TEC - - 5002 controller . When a brake pedal is not depressed, the brake pedal assembly [...]

Groundsmaster 5900/5910 Page 5 - - 5 2 Electrical System Main Power , Controller , Start and Cab (Groundsmaster 5910) Relays The Groundsmaster 5900 and 5910 use three (3) identi- cal relays to control electrical power circuits. The Groundsmaster 5910 uses an additional relay for the cab electrical components. The relays are attached to the operator[...]

Groundsmaster 5900/5910 Page 5 - - 53 Electrical System Air Conditioning Relay (Groundsmaster 5910) A relay is used to control the air conditioning electrical power circuit on the Groundsmaster 5910. When ener- gized by the air conditioning switch, the relay provides current for the air conditioning components. The relay is attached to the cab head[...]

Groundsmaster 5900/5910 Page 5 - - 5 4 Electrical System T oro Electronic Controller (TEC) Groundsmaster 5900 and 5910 machines use two (2) T oro Electronic Controllers (TEC). The controllers are attached to the operator platform under the power cen- ter cover (Fig. 96). The Info Center Display should be used when checking inputs and outputs of the[...]

Groundsmaster 5900/5910 Page 5 - - 55 Electrical System This page is intentionally blank. Electrical System[...]

Groundsmaster 5900/5910 Page 5 - - 5 6 Electrical System Hydraulic V alve Solenoid Coils There are numerous hydraulic valve solenoid coils on the Groundsmaster hydraulic manifolds. When the sole- noid coils are energized, hydraulic valve shift occurs to control hydraulic flow . T esting of these solenoid coils can be done with the solenoid coil on [...]

Groundsmaster 5900/5910 Page 5 - - 57 Electrical System NOTE: T o assist in troubleshooting, identical solenoid coils can be exchanged. If the machine problem follows the exchanged coil, an electrical problem likely exists. If the problem remains unchanged, something other than the solenoid coil is the likely problem source (e.g. switch, circuit wi[...]

Groundsmaster 5900/5910 Page 5 - - 5 8 Electrical System Fuel Sender The fuel sender is located on top of the fuel tank. T esting 1. Remove blue/red wire and black ground wire from the fuel sender . CAUTION When testing circuit wiring and fuel gauge, make sure wire connections are secure before turning ignition switch RUN to prevent an explosion or[...]

Groundsmaster 5900/5910 Page 5 - - 59 Electrical System Hydraulic Oil T emperature Sender The hydraulic oil temperature sender is attached to the hydraulic flush manifold in port TS (Fig. 106). T esting 1. Locate oil temperature sender on hydraulic flush manifold. D isconnect wire harness connector from tem- perature sender . 2. Thoroughly clean hy[...]

Groundsmaster 5900/5910 Page 5 - - 6 0 Electrical System Diode Assembly A diode assembly is used in the Groundsmaster 5900 wire harness (Fig. 109). The diode is used for circuit protection from voltage spikes that occur when the start- er solenoid is de - - energized. The diode plugs into the wire harness near the fuel water separator . T esting Th[...]

Groundsmaster 5900/5910 Page 5 - - 61 Electrical System T raction Pedal Potentiometer The traction pedal potentiometer is connected to the traction pedal assembly (Fig. 1 12). This potentiometer determines the neutral band for the traction pedal, the direction of travel desired by the operator and the trac- tion speed. The potentiometer is a single[...]

Groundsmaster 5900/5910 Page 5 - - 6 2 Electrical System Up Limit Switches The cutting deck up limit switches are normally open proximity s witches that are attached to brackets located on the traction unit frame (Fig. 1 13). The sensing plates used for the switches are located on the cutting deck lift arms. When a cutting deck is in the lowered po[...]

Groundsmaster 5900/5910 Page 5 - - 63 Electrical System Service and Repairs Battery Storage If the machine will be stored for more than 30 days: 1. Remove the batteries and charge them fully (see Battery Service). 2. Either store batteries on a shelf or on the machine. 3. Leave cables disconnected if the batteries are stored on the machine. 4. Stor[...]

Groundsmaster 5900/5910 Page 5 - - 6 4 Electrical System Battery Service The batteries are the heart of the electrical system. With regular and proper service, battery life can be extended. Additionally , battery and electrical component failure can be prevented. CAUTION When working with batteries, use extreme cau- tion to avoid splashing or spill[...]

Groundsmaster 5900/5910 Page 5 - - 65 Electrical System Battery Inspection, Maintenance, and T esting 1. Perform following inspections and maintenance: A. Check battery case for cracks. Replace battery if cracked or leaking. B. Check battery terminal posts for corrosion. Use wire brush to clean corrosion from posts. IMPORT ANT : Before cleaning the[...]

Groundsmaster 5900/5910 Page 5 - - 6 6 Electrical System H. Using the table below , determine the minimum voltage for the electrolyte temperature of the center battery cell: Minimum Vo l t a g e Battery Electrolyte T emperature 9.6 70 o F (and up) 21.1 o C (and up) 9.5 60 o F 15.6 o C 9.4 50 o F 10.0 o C 9.3 40 o F 4.4 o C 9.1 30 o F -- 1 . 1 o C 8[...]

Groundsmaster 5900/5910 Page 5 - - 67 Electrical System Hydraulic V alve Solenoid Coil A hydraulic valve solenoid coil on a hydraulic control manifold can be replaced without opening the hydraulic system. Removal (Figs. 1 16 and 1 17) 1. Park machine on a level surface, lower cutting decks, stop engine and engage parking brake. Remove key from igni[...]

Groundsmaster 5900/5910 Page 5 - - 6 8 Electrical System This page is intentionally blank.[...]

Groundsmaster 5900/5910 Page 6 - - 1 Axles, Planetaries and Brakes Chapter 6 Axles, Planetaries and Brakes T able of Contents SPECIFICA TIONS 2 ............................. GENERAL INFORMA TION 3 ..................... Operator ’s Manual 3 .......................... SERVICE AND REP AIRS 4 ...................... Wheels 4 ..........................[...]

Groundsmaster 5900/5910 Page 6 - - 2 Axles, Planetaries and Brakes Specifications Item Specification T ire pressure Front tire 50 psi (345 kPa) Rear tire 30 psi (207 kPa) Rear wheel toe - - in 0 to 0.125 in (0 to 3.18 mm) Planetary gear drive oil SAE 85W - - 140 wt. gear lube Capacity (each planetary) 16 fluid ounces (0.47 liters) Wheel lug nut tor[...]

Groundsmaster 5900/5910 Page 6 - - 3 Axles, Planetaries and Brakes General Information Operator ’s Manual The Operator ’s Manual provides information regarding the operation, general maintenance and maintenance intervals for your Groundsmaster . Refer to the Opera- tor ’s Manual for additional information when servicing the machine. Axles, Pl[...]

Groundsmaster 5900/5910 Page 6 - - 4 Axles, Planetaries and Brakes Service and Repairs Wheels 1. Front axle frame 2. Front wheel motor 3. Brake assembly 4. Planetary assembly 5. Lug nut (8 used per front wheel) 6. Front wheel assembly 7. Rear wheel motor 8. Rear wheel assembly 9. Lug nut (6 used per rear wheel) 10. Rear axle 11 . M a i n fr a m e F[...]

Groundsmaster 5900/5910 Page 6 - - 5 Axles, Planetaries and Brakes Wheel Removal (Fig. 1) 1. Park machine on a level surface, lower cutting decks, stop engine, apply parking brake and remove key from the ignition switch. 2. Chock wheels to prevent machine from shifting. 3. Loosen, but do not remove, lug nuts that secure wheel to machine. CAUTION Wh[...]

Groundsmaster 5900/5910 Page 6 - - 6 Axles, Planetaries and Brakes Brake Assembly 1. Front axle frame 2. Splined brake shaft 3. Retaining ring 4. Planetary assembly (2 used) 5. Lug nut (8 used per wheel) 6. Front wheel assembly 7. Gasket 8. Brake assembly (LH shown) 9. O - - ring 10. Flange head screw (4 used per side) 1 1. Front wheel motor (2 use[...]

Groundsmaster 5900/5910 Page 6 - - 7 Axles, Planetaries and Brakes Remove Brake Assembly (Fig. 2) 1. Park machine on a level surface, lower cutting decks, stop engine and remove key from the ignition switch. Do not apply parking brake. 2. Drain oil from planetary/brake assembly . 3. Chock rear wheels to prevent machine from shifting. CAUTION When c[...]

Groundsmaster 5900/5910 Page 6 - - 8 Axles, Planetaries and Brakes Install Brake Assembly (Fig. 2) 1. Make sure that internal retaining rings are fully seated in grooves inside splined brake c oupler (item 2). Slide splined brake coupler into brake assembly . Note: The stepped end of the coupler must be installed toward the hydraulic wheel motor (F[...]

Groundsmaster 5900/5910 Page 6 - - 9 Axles, Planetaries and Brakes This page is intentionally blank. Axles, Planetaries and Brakes[...]

Groundsmaster 5900/5910 Page 6 - - 1 0 Axles, Planetaries and Brakes Brake Service 1. Brake housing (LH shown) 2. Seal 3. Pull rod 4. Clevis pin (2 used) 5. Link (2 used) 6. Hitch pin (2 used) 7. Stationary disc (4 used) 8. Rotating disc (3 used) 9. Retaining ring 10. Gasket 1 1. Rotating actuator 12. Extension spring (3 used) 13. Ball (3 used) 14.[...]

Groundsmaster 5900/5910 Page 6 - - 1 1 A xles, Planetaries and Brakes Brake Disassembly (Fig. 7) 1. Scrape gasket material (item 10) from brake housing and planetary wheel drive mounting surfaces. 2. Remove retaining ring (item 9) from brake housing. 3. Remove four (4) stationary discs (item 7) and three (3) rotating discs (item 8). 4. Remove three[...]

Groundsmaster 5900/5910 Page 6 - - 1 2 Axles, Planetaries and Brakes Planetary Wheel Drive Assembly Figure 9 FRONT RIGHT 4 6 2 3 3 7 5 20 13 16 17 14 23 20 21 22 18 10 9 19 1 24 15 12 11 21 8 70 to 90 ft - - lb (95 to 122 N - - m) 75 to 85 ft - - lb (101 to 1 15 N - - m) 1. Front axle frame 2. Splined brake shaft 3. Retaining ring 4. Planetary asse[...]

Groundsmaster 5900/5910 Page 6 - - 13 Axles, Planetaries and Brakes NOTE: The planetary wheel drive assembly can be ser- viced with the planetary installed to machine (see Plane- tary Wheel Drive Service in this section). Use the following procedure to remove and install planetary wheel drive assembly from machine. Planetary Wheel Drive Removal (Fi[...]

Groundsmaster 5900/5910 Page 6 - - 1 4 Axles, Planetaries and Brakes Planetary Wheel Drive Service 1. Spindle 2. Boot seal 3. Oil seal 4. Inner bearing cone 5. Inner bearing cup 6. Wheel stud (8 used) 7. Socket head screw (16 used) 8. Lock washer (16 used) 9. Housing 10. Dowel pin (2 used) 1 1. Outer bearing cup 12. Outer bearing cone 13. O - - rin[...]

Groundsmaster 5900/5910 Page 6 - - 15 Axles, Planetaries and Brakes NOTE: The planetary wheel drive assembly can be ser- viced with the planetary installed to machine. If the spindle (item 1) needs to be removed from machine, see Planetary Wheel Drive Assembly in this section. Disassembly (Figs. 1 1 and 12) 1. If planetary wheel drive assembly is i[...]

Groundsmaster 5900/5910 Page 6 - - 1 6 Axles, Planetaries and Brakes F . Lightly oil bearing journals o n spindle s haft. Slide housing assembly onto spindle (item 1) taking care to not damage seal or spindle. Make sure that inner bearing in housing fully seats against spindle shaft shoulder . G. Install outer bearing cone (item 12) onto spindle. N[...]

Groundsmaster 5900/5910 Page 6 - - 17 Axles, Planetaries and Brakes This page is intentionally blank. Axles, Planetaries and Brakes[...]

Groundsmaster 5900/5910 Page 6 - - 1 8 Axles, Planetaries and Brakes Rear Axle 1. Rear wheel assembly 2. Lug nut (6 used per wheel) 3. Cap screw (4 used per motor) 4. Lock washer (4 used per motor) 5. LH wheel motor 6. Rear axle 7. Tie rod 8. RH spindle 9. RH wheel motor 10. Flange bushing (4 used) 1 1. Steering cylinder (2 used) 12. Lock nut 13. P[...]

Groundsmaster 5900/5910 Page 6 - - 19 Axles, Planetaries and Brakes Removal (Fig. 13) 1. Park machine on a level surface, lower cutting decks, stop engine, engage parking brake and remove key from the ignition switch. 2. Chock front wheels to prevent machine from s hifting. 3. Thoroughly clean hydraulic hose ends and fittings on steering cylinders [...]

Groundsmaster 5900/5910 Page 6 - - 2 0 Axles, Planetaries and Brakes Rear Axle Service 1. Rear wheel assembly 2. Lug nut (6 used per wheel) 3. Cap screw (4 used per motor) 4. Lock washer (4 used per motor) 5. LH wheel motor 6. Cotter pin 7. Tie rod assembly 8. RH spindle 9. RH wheel motor 10. 45 o hydraulic fitting 1 1. Steering cylinder (2 used) 1[...]

Groundsmaster 5900/5910 Page 6 - - 21 Axles, Planetaries and Brakes Tie Rod Assembly (Figs. 14 and 15) 1. Remove cotter pin and slotted hex nut that secure the tie rod ends to the steering spindles. Separate the tie rod ends from the spindle and remove tie rod from ma- chine. NOTE: One of the tie rod ball joints has left hand threads. 2. Loosen cap[...]

Groundsmaster 5900/5910 Page 6 - - 2 2 Axles, Planetaries and Brakes 7. Remove the flange head screw , spindle cap and re- taining ring that secure the steering spindle into the axle tube. Slide the spindle out of the axle tube to expose the spindle bushings. Locate and retrieve thrust washer (item 20) from steering spindle shaft. 8. Use a bushing [...]

Groundsmaster 5900/5910 Page 7 - - 1 Chassis Chapter 7 Chassis T able of Contents GENERAL INFORMA TION 1 ..................... Operator ’s Manual 1 .......................... SERVICE AND REP AIRS 2 ...................... Steering T ower 2 .............................. Wing Deck Rear Impact Arm Assembly 4 ........ Lift Arm Joint Y oke 6 .........[...]

Groundsmaster 5900/5910 Page 7 - - 2 Chassis Service and Repairs Steering T ower 1. Steering tower cover 2. Flange head screw 3. Cap screw (2 used) 4. Pivot hub (3 used) 5. Steering column assembly 6. Thrust washer (4 used) 7. Steering tower 8. Hydraulic fitting (5 used) 9. O - - ring 10. Steering control valve 11 . O - - r i n g 12. Flange bushing[...]

Groundsmaster 5900/5910 Page 7 - - 3 Chassis Disassembly 1. Park machine on a level surface, lower cutting decks, stop engine, apply parking brake and remove key from the ignition switch. 2. Disassemble steering tower as needed using Figure 1 as a guide. Assembly 1. Assemble steering tower using Figure 1 as a guide. A. If steering wheel was removed[...]

Groundsmaster 5900/5910 Page 7 - - 4 Chassis Wing Deck Rear Impact Arm Assembly 1. Pivot hub 2. Thrust washer 3. Cap screw 4. Flat washer 5. Lock nut 6. Cap screw 7. Shim 8. Base mount 9. Joint yoke 10. Spacer 1 1. Thrust washer 12. Pivot shaft 13. Thrust washer (as required) 14. Hardened washer 15. Lock nut 16. Lock washer 17. Rear impact arm hous[...]

Groundsmaster 5900/5910 Page 7 - - 5 Chassis Removal (Fig. 2) 1. Park machine on a level surface, lower cutting decks, stop engine, apply parking brake and remove key from the ignition switch. 2. Remove cap screw (item 6) and lock nut (item 5) that secures rod end of rear impact arm to cutting deck con- nection. Locate and remove spacer (item 29) f[...]

Groundsmaster 5900/5910 Page 7 - - 6 Chassis Lift Arm Joint Y oke 1. Pivot hub 2. Thrust washer 3. Cap screw (8 used per yoke) 4. Flat washer (8 used per yoke) 5. Lock nut 6. Cap screw 7. Shim 8. Base mount 9. Joint yoke 10. Spacer 1 1. Thrust washer 12. Pivot shaft 13. Thrust washer (as required) 14. Hardened washer 15. Lock nut 16. Lock washer 17[...]

Groundsmaster 5900/5910 Page 7 - - 7 Chassis 2. Press base mounts from j oint yoke. Slide bearings from joint yoke. 3. Use a press to remove cross and remaining bearings from yoke: A. Place a small socket against one bearing and a large socket against the yoke on the opposite side. B. While supporting the large socket, apply pres- sure on small soc[...]

Groundsmaster 5900/5910 Page 7 - - 8 Chassis Front Deck Lift Arms 1. Lift cylinder (LH shown) 2. Lift arm (2 used) 3. Lift arm pin 4. Pin 5. Flange head screw 6. Roll pin 7. Flange nut 8. Flat washer 9. Jam nut (2 used per u - - bolt) 10. Cotter pin (2 used per clevis pin) 1 1. Clevis pin 12. Plug 13. Flat washer (4 used per pin) 14. U - - bolt (2 [...]

Groundsmaster 5900/5910 Page 7 - - 9 Chassis Removal (Fig. 6) 1. Park machine on a level surface, lower cutting decks, stop engine, apply parking brake and remove key from the ignition switch. 2. Remove front cutting deck (see Cutting Deck Re- moval in Chapter 8 - - Cutting Units). CAUTION When changing attachments, tires or perform- ing other serv[...]

Groundsmaster 5900/5910 Page 7 - - 1 0 Chassis 3. Align lift cylinder with lift arm. Slide lift cylinder pin through lift arm and cylinder end. Secure pin with flange head screw and flange nut. 4. Install front wheel assembly (see Wheel Installation in the Service and Repairs section of Chapter 6 - - Axles, Planetaries and Brakes). Lower machine to[...]

Groundsmaster 5900/5910 Page 7 - - 1 1 Chassis This page is intentionally blank. Chassis[...]

Groundsmaster 5900/5910 Page 7 - - 1 2 Chassis Wing Deck Lift Arms 1. Lift arm (LH shown) 2. Grease fitting 3. Grease fitting 4. Flange nut 5. Cylinder pin 6. Cap screw 7. Hydraulic fitting 8. Lift cylinder 9. Lock nut (2 used per plate) 10. Flat washer (2 used per plate) 1 1. S ensing plate 12. Carriage bolt 13. Aluminum plate 14. Rivet (3 used pe[...]

Groundsmaster 5900/5910 Page 7 - - 13 Chassis Removal (Fig. 9) 1. Park machine on a level surface, lower cutting decks, stop engine, apply parking brake and remove key from the ignition switch. 2. Remove wing deck from lift arm (see Wing Cutting Deck in Chapter 8 - - Cutting Decks). 3. Remove wing deck impact arm assembly from pivot hub (see Wing D[...]

Groundsmaster 5900/5910 Page 7 - - 1 4 Chassis 6. Apply Permatex Blue Gel medium strength thread- locker (or equivalent) to threads of cap screw (item 23). Secure pivot hub to pivot shaft with washer (item 24) and cap screw . T orque cap screw from 77 to 96 ft - - lb (105 to 130 N - - m) . 7. Install joint yoke and cutting deck connection to lift a[...]

Groundsmaster 5900/5910 Page 7 - - 15 Chassis This page is intentionally blank. Chassis[...]

Groundsmaster 5900/5910 Page 7 - - 1 6 Chassis Console Arm 1. Headlight switch 2. Lock nut 3. LH cover 4. Console arm panel 5. Ignition switch 6. RH cover 7. Screw 8. Cap screw (2 used) 9. Cover plate 10. Nut 11 . C r u i s e s wi t c h 12. 4WD traction assist switch 13. Lift/lower switch (3 used) 14. Lock washer 15. Arm rest 16. Arm panel 17. Flan[...]

Groundsmaster 5900/5910 Page 7 - - 17 Chassis Disassembly (Fig. 14) 1. Park machine on a level surface, lower cutting units, stop engine and engage parking brake. Remove key from ignition switch. 2. Remove two (2) cap screws (item 8) and then cover plate (item 9) from outside of console arm. Locate and retrieve two (2) flange spacers (item 28). 3. [...]

Groundsmaster 5900/5910 Page 7 - - 1 8 Chassis T raction Pedal 1. Carriage screw (6 used) 2. T raction pedal 3. Pedal abrasive 4. Pedal abrasive 5. T raction pedal shaft 6. Slotted roll pin 7. Roll pin 8. Flange nut (6 used) 9. Cap screw (4 used) 10. Mounting bracket 1 1. Flat washer 12. Compression spring 13. Spring retainer 14. Flange head screw [...]

Groundsmaster 5900/5910 Page 7 - - 19 Chassis IMPORT ANT : A properly installed and calibrated traction pedal potentiometer is critical to accurate traction system response and for reliable poten- tiometer life. Use care when removing, installing and calibrating the traction pedal potentiometer . Disassembly (Fig. 16) 1. Park machine on a level sur[...]

Groundsmaster 5900/5910 Page 7 - - 2 0 Chassis Operator Seat 1. Seat assembly 2. Flat washer (4 used) 3. Seat belt 4. Cap screw 5. Seat platform 6. Flange nut (4 used) 7. Carriage screw (4 used) 8. Screw (2 used) 9. R - - clamp (2 used) 10. Manual tube 1 1. Cap screw 12. Flange nut 13. Support bracket 14. Flange nut (2 used) 15. Support channel 16.[...]

Groundsmaster 5900/5910 Page 7 - - 21 Chassis Removal (Fig. 18) 1. Park machine on a level surface, lower cutting decks, stop engine, apply parking brake and remove key from the ignition switch. 2. Disconnect seat electrical connector from machine wire harness. 3. Support control arm assembly to prevent it from shift- ing. 4. Remove flange nut (ite[...]

Groundsmaster 5900/5910 Page 7 - - 2 2 Chassis Operator Seat Service 1. Backrest cushion 2. Seat cushion 3. Armrest cover 4. LH armrest 5. Bushing (2 used) 6. Backrest 7. Plug (2 used) 8. Cable tie (3 used) 9. LH adjustment rail 10. Bumper (2 used) 1 1. W asher 12. Cap screw (2 used) 13. Seat 14. Nut 15. Spring (2 used) 16. Magnet 17. Seat switch 1[...]

Groundsmaster 5900/5910 Page 7 - - 23 Chassis Disassembly (Fig. 20) 1. Remove seat from machine for service (see Opera- tor Seat Removal in this section). 2. Disassemble operator seat as necessary using Fig- ure 20 as a guide. Assembly (Fig. 20) 1. Assemble operator seat using Figure 20 as a guide. 2. Install seat to machine ( see Operator Seat Ins[...]

Groundsmaster 5900/5910 Page 7 - - 2 4 Chassis Operator Seat Suspension 1. Cover 2. Cover 3. Level control 4. Air control valve 5. Shock absorber 6. Air spring 7. Air tube assembly 8. Wire harness 9. Compressor 10. Bellows 11 . S t o p 12. Bumper set (2 used) 13. Roller (4 used) 14. Washer (2 used) 15. T ether 16. Rivet (2 used) 17. Washer (4 used)[...]

Groundsmaster 5900/5910 Page 7 - - 25 Chassis NOTE: Most of the seat suspension components can be serviced with the seat suspension base mounted to the frame platform. If the air spring assembly (item 6) re- quires removal, the seat suspension base will have to be removed from the seat platform. Disassembly (Fig. 21) 1. Park machine on a level surf[...]

Groundsmaster 5900/5910 Page 7 - - 2 6 Chassis Hood 1. Hood 2. Rear hood foam seal 3. LH rear foam seal 4. Flange nut (8 used) 5. Flange head screw (3 used) 6. W asher (8 used) 7. Heat shield 8. Clip (3 used) 9. Hex nut (2 used per cylinder) 10. RH rear foam seal 1 1. S upport plate 12. Hood frame 13. T op foam seal 14. Air box foam seal 15. Side f[...]

Groundsmaster 5900/5910 Page 7 - - 27 Chassis NOTE: Hood removal and installation requires two people. Removal (Fig. 23) 1. Park machine on a level surface, lower cutting decks, stop engine, apply parking brake and remove key from the ignition switch. 2. Unlatch and raise hood. 3. Have one person s upport the rear of the raised hood. 4. Have a seco[...]

Groundsmaster 5900/5910 Page 7 - - 2 8 Chassis This page is intentionally blank.[...]

Groundsmaster 5900/5910 Cutting Decks Page 8 - - 1 Chapter 8 Cutting Decks T able of Contents SPECIFICA TIONS 2 ............................. TROUBLESHOOTING 3 ......................... Factors That Can Affect Quality of Cut 3 ......... GENERAL INFORMA TION 4 ..................... Operator ’s Manual 4 .......................... Castor Wheel T ire[...]

Groundsmaster 5900/5910 Cutting Decks Page 8 - - 2 Specifications MOUNTING: Cutting decks are supported by lift arms controlled with hydraulic lift cylinders. CONSTRUCTION: Deck chambers are welded steel construction reinforced with channels and plates. HEIGHT - - OF - - CUT RANGE: 1” to 6” (25.4 mm to 152 mm) adjustable in 1/2” (12.7 mm) inc[...]

Groundsmaster 5900/5910 Cutting Decks Page 8 - - 3 T roubleshooting There are a number of factors that can contribute to un- satisfactory quality of cut, some of which may be turf conditions. T urf conditions such as excessive thatch, uneven ground conditions, “sponginess” or attempting to cut off too much grass height may not always be over- c[...]

Groundsmaster 5900/5910 Cutting Decks Page 8 - - 4 General Information CAUTION Never install or work on the cutting deck or lift arms with the engine running. Always stop en- gine and remove ignition key first. Operator ’s Manual The Operator ’s Manual provides information regarding the operation, general maintenance and maintenance intervals f[...]

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Groundsmaster 5900/5910 Cutting Decks Page 8 - - 6 Service and Repairs CAUTION Never install or work on a cutting deck or lift arm with the engine running. Always stop engine and remove ignition key first. Front Cutting Deck 1. Lift cylinder (LH shown) 2. Hydraulic deck motor 3. Flat washer (2 used per lift arm) 4. Cap screw (2 used per lift arm) 5[...]

Groundsmaster 5900/5910 Cutting Decks Page 8 - - 7 Removal (Fig. 1) 1. Position machine on a clean, level surface. Lower cutting decks, stop engine, apply parking brake and re- move key from the ignition switch. 2. Remove center deck cover to access hydraulic deck motor . 3. Remove hydraulic motor from cutting deck (see Cut- ting Deck Motor Removal[...]

Groundsmaster 5900/5910 Cutting Decks Page 8 - - 8 Wing Cutting Deck Figure 4 FRONT RIGHT 1. Wing cutting deck (LH shown) 2. Lift arm (LH shown) 3. Rear impact arm assembly 4. Lock nut (8 used) 5. Flange head screw (8 used) 6. Deck connection (LH shown) 7. Deck outer cover 3 4 5 6 1 2 7[...]

Groundsmaster 5900/5910 Cutting Decks Page 8 - - 9 Removal (Fig. 4) 1. Position machine on a clean, level surface. Lower cutting decks, stop engine, apply parking brake and re- move key from the ignition switch. 2. Remove cutting deck outer cover to access hydraulic deck motor . 3. Remove three ( 3) hose guides from cutting deck (Fig. 5). Leave two[...]

Groundsmaster 5900/5910 Cutting Decks Page 8 - - 10 Idler Assembly 1. Drive spindle assembly 2. Driven spindle assembly (double) 3. Driven spindle assembly (single) 4. Idler pulley 5. Flange bushing 6. Flat washer 7. Idler spacer 8. Screw 9. Lock nut 10. T orsion spring 1 1. T orsion spring 12. W asher 13. Snap ring 14. Grease fitting 15. Low idler[...]

Groundsmaster 5900/5910 Cutting Decks Page 8 - - 1 1 4. Using appropriate socket wrench, rotate idler arm away from drive belt to release belt tension. Remove drive belt(s) from deck pulleys. 5. Insert nut driver or small piece of pipe onto the end of the torsion spring for the idler arm. CAUTION Be careful when removing tension from the idler arm [...]

Groundsmaster 5900/5910 Cutting Decks Page 8 - - 12 Front Deck Winglets 1. Center deck 2. RH deck winglet 3. LH deck winglet 4. Flange bushing (4 used per winglet) 5. Bumper pad (2 used) 6. Screw (4 used) 7. Flange nut (4 used) 8. Grease fitting 9. Eccentric (2 used per winglet) 10. Cap screw (2 used per winglet) 1 1. Lock nut (2 used per winglet) [...]

Groundsmaster 5900/5910 Cutting Decks Page 8 - - 13 Disassembly (Fig. 9) 1. Park machine on a level surface, lower front cutting deck, stop engine, apply parking brake and remove key from the ignition switch. 2. Remove covers from front cutting deck. 3. Using appropriate socket wrench, rotate idler arm away from drive belt to release belt tension. [...]

Groundsmaster 5900/5910 Cutting Decks Page 8 - - 14 Blade Spindle 1. Driven spindle (double pulley) 2. Drive spindle 3. Driven spindle (high pulley) 4. Grease fitting Figure 1 1 RIGHT DECK LEFT DECK 1 2 3 4 1 2 3 4 4 4 1 1 4 3 2 3 4 4 4 4 FRONT DECK FRONT RIGHT[...]

Groundsmaster 5900/5910 Cutting Decks Page 8 - - 15 Removal (Figs. 1 1 and 13) 1. Park machine on a level surface, lower cutting decks, stop engine, apply parking brake and remove key from the ignition switch. 2. Remove covers from cutting deck to allow access to blade spindle. 3. If drive spindle is to be serviced, remove hydraulic motor from cutt[...]

Groundsmaster 5900/5910 Cutting Decks Page 8 - - 16 Blade Spindle Service Disassembly (Fig. 14) 1. Loosen and remove lock nut from top of spindle shaft. Remove hardened washer and pulley from spindle. For drive spindle, remove hydraulic motor mount. 2. Remove the spindle shaft from the spindle housing which may require the use of an arbor press. Th[...]

Groundsmaster 5900/5910 Cutting Decks Page 8 - - 17 3. Using an arbor press, push the bearing cups into the top and bottom of the spindle housing. The top bearing cup must contact the outer bearing spacer previously installed, and the bottom bearing cup must contact the snap ring. Make sure that the assembly is correct by supporting the first beari[...]

Groundsmaster 5900/5910 Cutting Decks Page 8 - - 18 Castor Forks and Wheels 1. Castor arm (wing deck shown) 2. Cap 3. Castor fork 4. Castor wheel bolt 5. Lock nut 6. Castor spacer 7. Thrust washer 8. Castor wheel 9. Grease fitting 10. Compression spring 1 1. Retaining ring 12. Cap washer Figure 18 9 1 11 6 12 10 7 3 4 5 8 2 7 60 to 80 ft - - lb (81[...]

Groundsmaster 5900/5910 Cutting Decks Page 8 - - 19 Disassembly 1. Disassemble castor forks and wheels using Figures 18 and 19 as guides. Assembly 1. Assemble castor forks and wheels using Figures 18 and 19 as guides. A. Install castor wheels so that valve stem extends toward left side of machine. B. Insert castor wheel bolt (item 4) from the right[...]

Groundsmaster 5900/5910 Cutting Decks Page 8 - - 20 Deck Skids and Rollers Removal (Fig. 20 and 21) 1. Remove skids and rollers from deck using Figures 20 and 21 as guides. Installation (Fig. 20 and 21) 1. Install skids and rollers to deck using Figures 20 and 21 as guides. A. Make sure to install skids (item 7) in the same mounting hole height pos[...]

Groundsmaster 5910 Operator Cab Page 9 - - 1 Chapter 9 Operator Cab T able of Contents GENERAL INFORMA TION 2 ..................... Operator ’s Manual 2 .......................... Electrical Components and Schematic 2 ......... Air Conditioning System 2 ...................... Cab Heater System 2 .......................... SERVICE AND REP AIRS 3 .[...]

Groundsmaster 5910 Operator Cab Page 9 - - 2 General Information The information in this chapter pertains to the operator cab on the Groundsmaster 5910. Operator ’s Manual The Operator ’s Manual provides information regarding the operation, general maintenance and maintenance intervals for your Groundsmaster . Refer to the Opera- tor ’s Manua[...]

Groundsmaster 5910 Operator Cab Page 9 - - 3 Service and Repairs General Precautions for Removing and Installing Air Conditioning System Components CAUTION The air conditioning system is under high pres - sure. Do not loosen any system fitting or compo- nent until after the system has been completely discharged by a certified A/C service technician[...]

Groundsmaster 5910 Operator Cab Page 9 - - 4 Air Conditioning Compressor 1. Flange head screw (4 used) 2. Pivot plate 3. Cap screw 4. Air conditioning compressor 5. Lock nut 6. Belt 7. Button head screw (2 used) 8. Flange head screw (3 used) 9. Mount plate 10. Flange nut (4 used) 1 1. T ensioner arm 12. Carriage screw (2 used) 13. Mount plate 14. S[...]

Groundsmaster 5910 Operator Cab Page 9 - - 5 CAUTION The air conditioning system is under high pres - sure. Do not loosen any system fitting or compo- nent until after the system has been completely discharged by a certified A/C service technician. 7. Have refrigerant evacuated from air conditioning system by a certified A/C service technician. 8. [...]

Groundsmaster 5910 Operator Cab Page 9 - - 6 Air Conditioning Compressor Service 1. Armature bolt 2. Armature plate 3. Shim 4. Snap ring 5. Cover 6. Pulley assembly 7. Coil screw (3 used) 8. Coil 9. Body bolt (6 used) 10. Washer (6 used) 11 . S n a p r i n g 12. Shaft seal 13. Front cylinder head 14. Body O - - ring 15. Front gasket 16. Front valve[...]

Groundsmaster 5910 Operator Cab Page 9 - - 7 This page is intentionally blank. Operator Cab[...]

Groundsmaster 5910 Operator Cab Page 9 - - 8 Roof Assembly 1. Roof 2. Screw (2 used) 3. Flat washer (6 used) 4. Bushing 5. Rear fastener (2 used) 6. Rear spacer (2 used) 7. Panel nut 8. Roof mount 9. Flange nut 10. Flange nut (4 used) 1 1. Headliner 12. Front spacer (2 used) 13. Front fastener (2 used) 14. Rubber washer 15. Cap screw 16. Hex nut (4[...]

Groundsmaster 5910 Operator Cab Page 9 - - 9 T o gain access to the heater core and air conditioning components that are located under the cab roof, the roof panel can be loosened, raised and supported. Removal (Fig. 4) 1. Park machine on a level surface, lower cutting decks, stop engine, engage parking brake and remove key from the ignition switch[...]

Groundsmaster 5910 Operator Cab Page 9 - - 10 Air Conditioning Condenser Assembly 1. Condenser cover 2. Flange nut (4 used) 3. Condenser fan 4. Condenser coil assembly 5. Flange nut (2 used) 6. Flat washer (4 used) 7. Roof 8. Bushing (4 used) 9. Flange head screw (2 used) Figure 7 2 1 3 4 7 8 6 5 9 6 Removal (Fig. 7) 1. Park machine on a level surf[...]

Groundsmaster 5910 Operator Cab Page 9 - - 1 1 8. Label and remove hoses from condenser coil. Imme- diately cap hoses and fittings to prevent moisture and contaminants from entering the system. 9. Remove condenser coil from roof using Figure 8 as a guide. NOTE: The replacement of the drier - - receiver is recom- mended whenever the air conditioning[...]

Groundsmaster 5910 Operator Cab Page 9 - - 12 Heater and Evaporator Assembly 1. Heater and evaporator assembly 2. T op cover 3. Flange head screw (2 used) 4. Drier - - r eceiver mount 5. Bottom cover 6. Hose clamp (2 used) 7. Speed nut (8 used) 8. Panel nut (4 used) 9. Drier - - receiver 10. Screw (8 used) 1 1. Screw (5 used) Figure 9 2 1 3 4 7 8 6[...]

Groundsmaster 5910 Operator Cab Page 9 - - 13 Removal (Fig. 9) 1. Park machine on a level surface, lower cutting decks, stop engine, engage parking brake and remove key from the ignition switch. 2. Remove fasteners that secure roof in place. Raise and support roof to allow access to condenser assembly (see Roof Assembly Removal in this section). 3.[...]

Groundsmaster 5910 Operator Cab Page 9 - - 14 6. Connect wire harness connectors to fan motor and binary switch on drier - - receiver . 7. Make sure that all machine air conditioning compo- nents are installed and secure. 8. Have a c ertified air conditioning service technician evacuate the air conditioning system completely , prop- erly recharge t[...]

Groundsmaster 5900/5910 Foldout Drawings Page 10 - - 1 Chapter 10 Foldout Drawings T able of Contents HYDRAULIC SCHEMA TIC 3 ..................... ELECTRICAL SCHEMA TICS Sheet 1 of 6 4 ................................ Sheet 2 of 6 5 ................................ Sheet 3 of 6 6 ................................ Sheet 4 of 6 7 .....................[...]

Groundsmaster 5900/5910 Foldout Drawings Page 10 - - 2 This page is intentionally blank.[...]

Page 10 - - 3 Hydr aulic S chem atic Groundsmaster 5900/5910[...]

Page 10 - - 4 Electr ical Schematic Groundsmaster 5900/5910 All r elays and so lenoid s are shown as de - - energized. All gr ound wir es are black. Sheet 1 of 6 S T (- - ) -- + 55- - A L -- + R LINE 01 LINE 06 58- - A IG LINE 1 1 LINE 10 LINE 05 45 44 22 29 18 16 41 07 30 47 02 GND BK/W R/W R/BK BN OR GY/ W GN/W BK/R DECREME NT OR BK 53- - A W/R G[...]

Page 10 - - 5 Ele ct ric al Sc h ema ti c Groundsmaster 5900/5910 All r elays and so lenoid s are shown as de - - energized. All gr ound wir es are black. Sheet 2 of 6 TX B J F C R R MAXI #2 R 1 4 7 A E G D A R CONTROLLER LINE 02 LINE 04 LINE 07 GROUND RS232 TX - - CAN - - RS485B C H B B 2F 4 2F 1 2F 2 VIO T/BK PK BN Y W R/W VIO R BK Y PK PK BK/W T[...]

Page 10 - - 6 Electr ical Schematic Groundsmaster 5900/5910 All r elays and so lenoid s are shown as de - - energized. All gr ound wir es are black. Sheet 3 of 6 2A LINE 10 PK BK T PK R R BK PK/G N W 31- - E 31- - D BK BU/R 18- - A Y VIO GN/W W GY OR GY/ BN BU/BK GN/Y T PK BU/Y W/BK GY/ BK T/BK BN/BK BU/R BN/W R GN VIO /W CAN+ CAN - - BK OR/B K OR [...]

Page 10 - - 7 PK W/O R 4F 2 7.5 A 2A 7.5 A BK 55- - C 55- - B LINE 24 GY PK/BU BU/W Y BN/Y T/W W/BK T/BK BK W GN BN VIO BU OR PK T PK F E D RX B A TX GY MANIFO LD DECK LIFT 7.5 A 4F 4 C CONTROL LINE 27 BK BK/W R/W TRAC TIO N ASSIST CT R UP LIMIT S W. BN/Y TRAC TIO N ASSIST RH DECK FLOA T (S9 ) 2WD/4WD LH DECK FLOA T (S4) RH DECK LOWE R (S8) RH DECK[...]

Page 10 - - 8 Electr ical Schematic Groundsmaster 5900/5910 All r elays and so lenoid s are shown as de - - energized. All gr ound wir es are black. Sheet 5 of 6 LINE 37 R LINE 36 LINE 35 LINE 33 LINE 32 LINE 34 LINE 31 LINE 30 A B C A B C GN VIO /W VIO BK BN VIO GY BK VIO BN VIO VIO BK GY SHEET 2 LINE 29 LINE 28 R VIO /W OR BN BU BK 53- - A 53- - [...]

Page 10 - - 9 Ele ct ric al Sc h ema ti c Groundsmaster 5900/5910 All r elays and so lenoid s are shown as de - - energized. All gr ound wir es are black. Sheet 6 of 6 (Operator Cab) 1 2 BK 1F 1 R R R PK VIO 4 3 L H Y OR VIO VIO W/BK OR BU GN BK OR/B K 05- - B 05- - A BK/W BU W R/W VIO W/BK GN P05- - G BK/W OR/B K PWR GND P1 1 - - 4 P1 1 - - 1 BU W[...]

Pag e 10 - - 10 Gr oundsmas ter 5900/ 5910 Plat fo rm W ire Harn ess Drawi n g NOTE CLOCK POSITION NOTE CLOCK POSITION[...]

Page 10 - - 1 1 Gr oundsmas ter 5900/ 5910 Plat fo rm W ire Harn ess Diag ram Sh eet 1 of 2 ORANGE/ VIOLET BLACK VIOLET BLACK BLACK RED/WHI TE BLACK TAN PINK GREEN/BLACK WHITE GREEN BLUE BLACK/WHI TE WHITE VIOLET VIOLET BLACK BLACK BLACK BLACK T AN/ BLACK T AN/ BLACK WHITE BLACK BLACK T AN/ BLACK T AN/ BLACK BLACK/WHI TE BLACK BLACK BLACK RED/WHI T[...]

Pag e 10 - - 12 Gr oundsmas ter 5900/ 5910 Plat fo rm W ire Harn ess Diag ram Sh eet 2 of 2 BLACK PINK/GREEN TA N TA N / W HI T E VIOLET/WHITE PINK VIOLET WHITE GREEN/WHITE GRA Y/ RED YELLO W/RED WHITE/RE D BLACK/RED BLACK YELLO W VIOLET ORANGE/ WH IT E BLACK BLACK BLACK BLACK PINK/W HITE BROWN/YELLOW VIOLET/WHITE GRA Y YELLO W BLACK BLACK WHITE/OR[...]

Pag e 10 - - 13 Gr oundsmas ter 5900/ 5910 Rear Wi re Harn ess Drawi ng NOTE CLOCK POSITION[...]

Pag e 10 - - 14 Gr oundsmas ter 5900/ 5910 Rear Wi re Harn ess Diag ram RED/BL ACK BLACK GRA Y/ T AN BROWN VIOLET GREEN/WHITE WHITE/BLUE WHITE/GREEN YELLOW/WHITE WHITE/YELL OW YELLOW/BLUE YELLOW/GREEN GRA Y GRA Y/ WHI TE BLACK BLACK BLACK BLACK BLACK BLACK/YELLOW BLACK BLACK BLACK BLACK RED/WHI TE BROWN GREE N/PINK GREEN PINK/B LACK BLACK/WHITE PIN[...]

Pag e 10 - - 15 Gr oundsmas ter 5910 Cab W i re Harness Draw in g[...]

Pag e 10 - - 16 Gr oundsmas ter 5910 Cab W i re Harness Di agram BLACK GREEN PINK BLUE YELLO W WHITE/BLACK RED/WHI TE RED RED RED RED BLUE BLACK BLACK BLACK BLACK VIOLET RED VIOLET VIOLET BLUE BLACK BROWN GRA Y ORANGE BLACK BLACK BLACK BLACK VIOLET VIOLET BLACK VIOLET BLACK VIOLET BROWN WHITE BLUE VIOLET VIOLET VIOLET BROWN BLUE BLACK WHITE/BLACK B[...]