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Makita HK1820 manual

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Table of contents for the manual

  • Page 1

    PR ODUCT P 1/17 T ECHNICAL INFORMA TION Dimensions: mm (") W idth (W) Height (H) Length (L) 351 (13-3/4) 102 (4) 203 (8) L H W Continuous Rating (W) V oltage (V) Cycle (Hz) Input Output Max. Output (W) 110 120 220 230 240 5.3 5.0 2.6 2.5 2.4 50/60 50/60 50/60 50/60 50/60 550 --- 550 550 550 260 260 260 260 260 390 390 390 390 390 Models No. De[...]

  • Page 2

    P 2 /1 7 [2] LUBRICATION Apply the following lubricants to protect parts and product from unusual abrasion: *Makita grease N.No.1 to the portions designated with black triangle *Makita grease R.No.00 to the portions designated with gray triangle *Makita grease N.No.2 to the portions designated with white triangle [1] NECESSARY REPAIRING TOOLS CAUTI[...]

  • Page 3

    Motor housing P 3 /1 7 [3] DISASSEMBLY/ASSEMBLY [3] -1. Chuck Section R epair DISASSEMBLY DISASSEMBL Y M5x20 Pan head screw (2 pcs) Handle section Cap 38 Do the reverse of the disassembling steps. 2) Remove Cap 38 with slotted screwdriver. 4) Remove Chuck cover and Compression spring 42. Steel ball guide 1) For easy repairing, separate Handle secti[...]

  • Page 4

    Remove Barrel cover support and Barrel cover. P 4 /1 7 [3] DISASSEMBLY/ASSEMBLY [3] -2. Barrel, Tool Holder, Cylinder Section R epair DISASSEMBLY 1) Disassemble the Chuck section as described in Figs. 2 , 3 . 2) Disassemble Tool holder, Ring 25 and Cylinder section from Barrel as described in Figs. 4 , 5 , 6 . Crank housing cover Ring spring 43 M4x[...]

  • Page 5

    P 5 /1 7 [3] DISASSEMBLY/ASSEMBLY [3] -2. Barrel, Tool Holder, Cylinder Section R epair DISASSEMBLY Ring 39 1. Pull out Striker from Cylinder section. 2. Remove ring 25, Urethane ring 26 and Ring spring 37 from Cylinder. 3. By removing Ring 39, you can see Pin 6 (3 pcs) that join Tool holder with Cylinder. Ring 25 Urethane ring 26 Ring spring 37 Ro[...]

  • Page 6

    P 6 /1 7 [3] DISASSEMBLY/ASSEMBLY [3] -2. Barrel, Tool Holder, Cylinder Section R epair ASSEMBLY Fig. 9 Do the reverse of the disassembling steps. Note: Rubber ring 13 is directional when assembled to Impact bolt. Be sure to assemble as illustrated to left in Fig. 9 . ASSEMBLY Do the reverse of the disassembling steps. DISASSEMBL Y [3] -3. Electric[...]

  • Page 7

    P 7 /1 7 [3] DISASSEMBLY/ASSEMBLY [3] -4. Motor Section R epair 1) Disassemble Handle section as illustrated in Fig. 2 2) Separate the contact of Carbon brushes from Commutator as described in Fig. 11 . 3) Disassemble Crank housing complete from Motor housing as illustrated in Fig. 12 . 4) Remov e Piston from Crank shaft as illustrated in Fig. 13 .[...]

  • Page 8

    P 8 /1 7 [3] DISASSEMBLY/ASSEMBLY [3] -4. Motor Section R epair 5) Remov e Crank section from Crank housing complete by tapping Crank housing complete with plastic hammer . ( Fig. 14 ) 6) Remov e Armature from crank housing complete using 1R023, 1R225 and arbor press as described in Fig. 15 . DISASSEMBL Y 1. Set Crank housing complete on 1R023, and[...]

  • Page 9

    P 9 /1 7 [3] DISASSEMBLY/ASSEMBLY [3] -5. Gear (Crank) Section R epair DISASSEMBL Y Fig. 16 ASSEMBL Y Do the rev erse of the disassembling steps. Note: Make sure that O Ring 39 is mounted to Bearing box of Crank section before assembling Crank section to Crank housing complete. (Fig. 14 ) 1) Disassemble Gear (Crank) section from Crank housing compl[...]

  • Page 10

    P 1 0 /1 7 [3] DISASSEMBLY/ASSEMBLY [3] -6. Handle Section R epair DISASSEMBL Y M5x20 Pan head scre w (2 pcs) 5x25 T apping scre w (2 pcs) Handle section Handle section consists of the follo wing main parts: Handle base, Handle, Handle cover And it can be disassembled as illustrated in Figs. 17 - 20 . Handle base Handle Lock-on button Stop ring E-4[...]

  • Page 11

    P 1 1 /1 7 [3] DISASSEMBLY/ASSEMBLY [3] -7. Recommended F astening T orque of Scr ews and Bolts R epair T ighten the bolt to the recommended torque described in Fig. 21 . Fig. 21 Fig. 22 [4] MAINTENANCE PR OGRAM When replacing carbon brush, it is recommended to do the follo wing maintenance at the same time for longer service life of the machine. 1[...]

  • Page 12

    P 1 2 /1 7 C ircuit diagram White Red Orange Blue Brown Color index of lead wires' sheath Black Clear Fig. D-1A Connector housing A Polyolefin tube (Protecti ve tube) Connector housing B Switch Connector Power supply cord Controller High V oltage Areas wher e Radio Interference Suppression Is Requir ed Fig. D-1B Fig. D-1C Low V oltage Areas wh[...]

  • Page 13

    W iring diagram P 1 3 /1 7 Handle base, viewed from Controller side Handle Through hole for passing Lead wires from Controller and Connector housing to the opposite side Handle cov er Handle, vie wed from Handle cover side Handle base Controller Be careful not to pinch the Lead wires with the ribs. ( Figs. D-2, D-3 ) [1] Routing Wires Through Handl[...]

  • Page 14

    W iring diagram P 1 4 /1 7 Fig. D-4A Fig. D-5A Handle base, vie wed from Controller side Handle base, viewed from Handle side Handle, viewed from Handle co ver side red blue Lead wires cov ered with Polyolefin tube (black) Controller Connector housing A Connector housing B Choke coil Controller Noise suppressor Switch Switch holder Pass the follo w[...]

  • Page 15

    W iring diagram P 1 5 /1 7 Fig. D-4B Fig. D-5B [2] Wiring in Handle Base and Handle Low V oltage Areas wher e Radio Interference Suppr ession Is Required The Lead wires to Connector housing A must be tight between Controller and Lead wire holder . T erminal of Grounding wire Grounding wire (clear) Controller Put the slack portion of Lead wires in t[...]

  • Page 16

    W iring diagram P 1 6 /1 7 Fig. D-4C Fig. D-5C [2] Wiring in Handle Base and Handle Other Areas where Radio Interfer ence Suppression Is Not Requir ed Put the slack portion of Lead wires in this space. Route all of the Lead wires to Switch through between the boss and the rib . Fix all of the Lead wires to Switch with this Lead wire holder of Switc[...]

  • Page 17

    W iring diagram P 1 7 /1 7 Fig. D-6 [3] Connecting Connector Housing with Brush Holder Unit Rear cov er The side where Lead wires are drawn out must be placed on Rear co ver side as illustrated blow . to Controller on Handle base Connector housing A Connector housing B (if used) Motor housing Choke coil (if used) Connector housing is directional wh[...]