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Table of contents for the manual
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Page 1
SECTION TSM 845 P AGE 1 Of 14 ISSUE f VIKING PUMP , INC. • A Unit of IDEX Corporation • Cedar Falls, IA 50613 USA VIKING PUMP , INC. • A Unit of IDEX Corporation • Cedar Falls, IA 50613 USA TECHNICAL SER VICE MANUAL INTRODUCTION Introduction . . . . . . . . . . . . . . . . . . . . . . . 1 Safety Information . . . . . . . . . . . . . . . . .[...]
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Page 2
SECTION TSM 845 ISSUE F P AGE 2 OF 14 DO NOT OPERA TE PUMP IF: – The front cover is not installed correctly . – Any guards are missing or incorrectly installed. – The suction or discharge piping is not connected. DO NOT place fingers, etc. into the pumping chamber or its connection ports or into any part of the drive train if there is ANY pos[...]
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Page 3
SECTION TSM 845 ISSUE F P AGE 3 OF 14 Series 823, 825 and 827 pumps are designed for long, trouble-free service life under a wide variety of application conditions with a minimum of maintenance. The points listed below will help provide long service life. FIGURE 3 SPECIAL INFORMA TION CAUTION ! Rare earth magnets used in these couplings have extrem[...]
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Page 4
SECTION TSM 845 ISSUE F P AGE 4 OF 14 CLEANING PUMP: Keep pump as clean as possible. This will facilitate inspection, adjustment and repair work. STORAGE: If pump and coupling are to be stored, drain pump and pour non-detergent SAE 30 weight oil into the pump port. Apply grease to the pump or the coupling shaft extension, if present or accessible. [...]
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Page 5
SECTION TSM 845 ISSUE F P AGE 5 OF 14 4. Remove head from pump. Do not allow idler to fall from idler pin. T ilt top of head back when removing to prevent this. Avoid damaging head gasket set, all gaskets are required to maintain end clearance. 5. Remove idler and bushing assembly . If idler bushing needs replacing, see “Installation of Bushings?[...]
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Page 6
SECTION TSM 845 ISSUE F P AGE 6 OF 14 ITEM NAME OF P ART ITEM NAME OF P ART ITEM NAME OF P ART 1 Capscrews 5 Ball Bearing (2 Req’d) 9 Bracket 2 External Snap Ring 6 Internal Snap Ring 10 Canister 3 Bearing Housing 7 Key 11 Inner Magnet Assembly 4 Bearing Spacer 8 Outer Mag Assembly 12 Hand Knobs FIGURE 6 MD-C SERIES COUPLING 1. If unit has a spac[...]
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Page 7
SECTION TSM 845 ISSUE F P AGE 7 OF 14 4. Insert a brass bar through a port between two rotor teeth and loosen the capscrew holding the inner magnet to the shaft (See Figure 1 1). Do not forget, this is a very strong magnet. If pump disassembly is required, remove the external retaining ring. 5. Do not remove the O-ring unless it is bad, especially [...]
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Page 8
SECTION TSM 845 ISSUE F P AGE 8 OF 14 DISASSEMBL Y & ASSEMBL Y OF MD-C SERIES BEARING HOUSING DISASSEMBL Y The bearing housing features two sealed ball bearings along with an outer magnet assembly . If further disassembly of this unit is required, proceed as follows: 1. Refer to Figure 12 for part identification. Cover the open end of the outer[...]
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Page 9
SECTION TSM 845 ISSUE F P AGE 9 OF 14 Use a suitable lubricant compatible with the fluid being handled when reassembling the pump. Inspect all parts, especially drilled holes in casing for the suck back system to make sure they are not plugged. Replace any worn parts and polish any burrs; clean all parts; assemble pump. 1. If the canister O-rings n[...]
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Page 10
SECTION TSM 845 ISSUE F P AGE 10 OF 14 INST ALLA TION OF BUSHINGS CARBON GRAPHITE: SILICON CARBIDE ASSEMBL Y COUPLING: SERIES MD-C80 COUPLING When installing carbon graphite bushings, extreme care must be taken to prevent breaking. Carbon graphite is a brittle material and easily cracked. If cracked, the bushing will quickly disintegrate. Using a l[...]
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Page 11
SECTION TSM 845 ISSUE F P AGE 11 OF 14 ADJUSTING HEAD GASKET END CLEARANCE PUMP ROT A TION Use either of the following procedures to properly adjust the end clearance when replacing gaskets: PROCEDURE A: With balance plate in position, slide rotor and shaft into casing. Insert a feeler gage of the proper thickness into the port and between two roto[...]
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Page 12
SECTION TSM 845 ISSUE F P AGE 12 OF 14 V AL VE - AS, AK AND AL SIZES V AL VE - LIST OF P ARTS 1. V alve Cap 6. V alve Body 2. Adjusting Screw 7. V alve Spring 3. Lock Nut 8. Poppet 4. Spring Guide 9. Cap Gasket 5. Bonnet 10. Bonnet Gasket DANGER ! Before opening any Viking pump liquid chamber (pumping chamber , reservoir , etc.) Be sure: 1. That an[...]
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Page 13
SECTION TSM 845 ISSUE F P AGE 13 OF 14 Some of the following may help pinpoint the problem: Pump does not pump: ► Lost its prime from air lead or low level in tank. ► Suction lift too high. ► Rotating in wrong direction. ► Strainer clogged. ► Bypass valve open, pressure relief valve set too low or pressure relief valve poppet stuck open. [...]
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Page 14
SECTION TSM 845 P AGE 14 OF 14 ISSUE F VIKING PUMP , INC. • A Unit of IDEX Corporation • Cedar Falls, IA 50613 USA © 3/2013 Viking Pump Inc. All rights reserved W ARRANTY Viking warrants all products manufactured by it to be free from defects in workmanship or material for a period of one (1) year from date of startup, provided that in no even[...]