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Viking 855 - page 1
TECHNICAL SER VICE MANUAL VIKING PUMP , INC. • A Unit of IDEX Corporation • Cedar Falls, IA 50613 USA SECTION TSM P AGE ISSUE Introduction ................................................................... 1 Special Information ....................................................... 3 Maintenance ............................................... ...
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Viking 855 - page 2
SECTION TSM 685.2 ISSUE C P AGE 2 OF 16 BEFORE opening any liquid chamber (pumping chamber , reservoir, relief valve adjusting cap fitting, etc.) be sure that : ● Any pressure in the chamber has been completely vented through the suction or discharge lines or other appropriate openings or connections. ● The pump drive system means (motor ...
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Viking 855 - page 3
SECTION TSM 685.2 ISSUE C P AGE 3 OF 16 FIGURE 3 RELIEF V AL VE POSITION SPECIAL INFORMA TION ROT A TION : Viking Mag Drive® pumps are designed to run in either direction. See PUMP ROT A TION, page 1 1. PRESSURE RELIEF V AL VES: 1. V ikin g pum ps are pos iti ve displ ace ment pump s and must be pro vid ed wit h some sort of pre ssu re pro tect io ...
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Viking 855 - page 4
GAUGE PORT BOSS STORAGE: If the pump and coupling are to be stored, drain the 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. Viking suggests rotating the pump shaft every 30 days to circulate the oil in the pump. The coupling should be stored in a ...
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Viking 855 - page 5
SECTION TSM 685.2 ISSUE C P AGE 5 OF 16 EXPLODED VIEW – SIZES AS, AK, AL, KE & KKE MAG-DRIVE PUMPS FIGURE 6 ITEM NAME OF P ART ITEM NAME OF P ART ITEM NAME OF P ART 1 Locknut 37 Idler 53 Locating Pin 21 Set Collar 38 Idler Bushing 60 Thrust W asher - 2 Req’d 25 Casing Bushing 39 Idler Pin 61 Machine Screws (metric) - 2 Req’d 30 Pipe Plug ...
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Viking 855 - page 6
SECTION TSM 685.2 ISSUE C P AGE 6 OF 16 MAGNETIC COUPLING OPTIONS Pump Size Magnetic Coupling Sizes AS B, C AK B, C AL B, C KE C KKE C COUPLING TORQUE AND SIZE OPTIONS T ABLE 3 TORQUE RA TINGS AND DRIVER CONNECTION OPTIONS Magnetic Coupling Sizes T orque Ratings (Ft-Lbs) Close-Coupled Long-Coupled IEC B-5 Flange Motor Mounts NEMA Motor Mounts Beari ...
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Viking 855 - page 7
SECTION TSM 685.2 ISSUE C P AGE 7 OF 16 6. Remove the idler and bushing assembly . If the idler bushing needs to be replaced, see “ INST ALLA TION OF BUSHINGS” on page 10. If further disassembly is required, the pump must be separated from coupling. Refer to “ DISASSEMBL Y OF COUPLING” on page 8 before proceeding with Step 7. 7. With the in ...
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Viking 855 - page 8
SECTION TSM 685.2 ISSUE C P AGE 8 OF 16 Buttonhead Screws Locknut Inner Magnet Set Collar Canister Bushing Canister O-ring Button Head Screws Canister and Casing Drain Holes DISASSEMBL Y OF COUPLING FIGURE 9 PUMP , INNER MAGNET AND CANISTER ASSEMBL Y Series MD2-B and MD2-C, All Sizes 1. Remove the piping to the ports and remove the capscrews securi ...
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Viking 855 - page 9
SECTION TSM 685.2 ISSUE C P AGE 9 OF 16 DISASSEMBL Y / ASSEMBL Y OF BEARING CARRIER DISASSEMBL Y The bearing carrier for an MD2 B coupling features two sealed ball bearings along with the outer magnet assembly . If further disassembly of this unit is required, reference Figure 7 on page 6 and Figure 13 then proceed as follows: 1. Remove the interna ...
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Viking 855 - page 10
SECTION TSM 685.2 ISSUE C P AGE 10 OF 16 INST ALLA TION OF BUSHINGS CARBON GRAPHITE The canister bushing (see Figure 9 on page 8) requires a special fixture for proper assembly so the bushing is only sold as part of the canister assembly . If attempting to install the carbon graphite idler or casing bushing, extreme care must be taken to prevent br ...
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Viking 855 - page 11
SECTION TSM 685.2 ISSUE C P AGE 11 OF 16 Do not attempt to reuse a PTFE (derivative) encapsulated O-ring if it has been removed. Immerse a new O-ring in boiling water for a few minutes. Remove it from the water and stretch out the O-ring so it will fit onto the casing hub without forcing it over a sharp edge. Run hot water* over the O-ring until it ...
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Viking 855 - page 12
SECTION TSM 685.2 ISSUE C P AGE 12 OF 16 Series MD2-B and MD2-C, All Sizes DANGER ! Follow these directions exactly to avoid injury to self or damage to the pumping unit. Be care- ful to keep the inner and outer magnets at least (1) foot apart until step 4. Do not engage the magnets in any other fashion. 1. Inspect the magnets for any steel objects ...
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Viking 855 - page 13
SECTION TSM 685.2 ISSUE C P AGE 13 OF 16 ADJUSTING END CLEARANCE T able 7-A provides standard operating end clearance for this pump. Use either of the following procedures to properly adjust the end clearance when replacing shims or reassembling the pump. FIGURE 21 PRESSURE RELIEF V AL VE INSTRUCTIONS Before opening any Viking pump liquid cham- ber ...
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Viking 855 - page 14
SECTION TSM 685.2 ISSUE C P AGE 14 OF 16 FIGURE 22 V AL VE – AS, AK, AL, KE AND KKE 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 DISASSEMBL Y – RELIEF V AL VE Mark the valve and head before disassembly to insure proper reassembly . 1 ...
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Viking 855 - page 15
SECTION TSM 685.2 ISSUE C P AGE 15 OF 16 TROUBLESHOOTING Some of the following may help pinpoint the problem: Pump does not pump: • Pump has lost its prime from air leak or low level in tank. • Suction lift is too high. • Pump is rotating in the wrong direction. • The strainer may be clogged. • The bypass valve is open, the pressure relie ...
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Viking 855 - page 16
TECHNICAL SER VICE MANUAL VIKING PUMP , INC. • A Unit of IDEX Corporation • Cedar Falls, IA 50613 USA © 5/2007 Viking Pump Inc. All rights reserved SECTION TSM P AGE ISSUE 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 ...
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