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Operating and Maintenance Manual 

3” Gas Engine Powered Diaphragm Pumps 

 

Models MCP5538-6538 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

215 Power Dr 

 
 
Operation Manual Contents 

 

 
 

Keep this information guide or a copy of it with the pump. 
Contact Magnum Products LLC for additional copies if this 
manual should become lost. If you have any questions regarding 
operating or servicing this p

Berlin, WI 54923

Fax (920) 361.4416 

 
 

Tel (920) 361.4442 

ump please contact Magnum 

Products LLC at 1-800-926-9768. 

Summary of Contents for MCP5538

Page 1: ...ontents Keep this information guide or a copy of it with the pump Contact Magnum Products LLC for additional copies if this manual should become lost If you have any questions regarding operating or servicing this p Berlin WI 54923 Fax 920 361 4416 Tel 920 361 4442 ump please contact Magnum Products LLC at 1 800 926 9768 ...

Page 2: ... 4 Pump Specifications Pg 5 Sound Specifications Pg 6 Operating Instructions Pg 6 Pump Diagram Pg 7 Maintenance Requirements Pg 8 Changing a Diaphragm Pg 8 Changing a Flap Valves Pg 8 Troubleshooting Guide Pg 9 Exploded View Pg 10 Parts List Pg 11 Parts List Con t Pg 12 Exploded View Skid Wheel Mounting Pg 13 Parts List Skid Wheel Mounting Pg 14 ...

Page 3: ...Serial Number is located on each pump The 5538 ce 6538 ce Gas 2 Serial Number Model Number Model Number and Serial Number are necessary for ordering arts or requesting service it is important that you document these umbers ecord Model Number and Serial Number Here p n R ...

Page 4: ...ous burns DO NOT attempt to clear blockages or clean the pump during operation Rotating parts may cause serious injury DO NOT pump flammable liquids DO NOT pump corrosive liquids Contact local authorities for assistance DO read understand and follow pump and operation manual procedures DO be sure pump is on a firm level surface and will not tip roll or fall while in operation DO operate pump only ...

Page 5: ...rk on gasoline powered engines if engine is flooded or the smell of gasoline is present DO NOT use gasoline or other types of fuels or flammable solvents to clean parts Fumes from these fuels and solvents can accumulate and cause an explosion DO operate the pump with all safety devices and guards in place and in working order DO keep the area around the muffler free of debris A hot muffler may ign...

Page 6: ... ENGINE SPEED 2700 rpm PUMP SPEED 63 strokes per minute CAPACITY 333 l m 88gpm SUCTION LIFT 7 5m 25ft DISCHARGE HEAD 7 5m 25ft SUCTION CONNECTION 75mm 3in DISCHARGE CONNECTION 75mm 3in SOLID HANDLING SIZE 43mm 1 7in WEIGHT MODEL 5538 63kg 138lb WEIGHT MODEL 6538 85kg 188lb SOUND PRESSURE LEVEL 83db A pump under load engine speed 2800rpm per EN ISO 3744 1995 ...

Page 7: ...ng a suction hose make sure the gasket is in place and in good shape a When using pipes coat the threads with a sealing compound 5 Make sure that the suction hose does not leak and that the lining is not loose or it will collapse under suction pressure and block the hose a To pump at maximum capacity use a hose or pipe of the same size or larger than the pump discharge 6 Priming time depends on th...

Page 8: ...5538 ce 6538 ce Gas 7 Pump Diagram ...

Page 9: ...e diaphragm bottom plate 4 Install the new diaphragm onto the bolts and diaphragm bottom plate 5 Using a pipe spacer over the bolts drive the diaphragm down into position on the diaphragm bottom plate 6 Install the diaphragm and diaphragm bottom plate assembly onto the connecting rod 7 Tighten the three nuts and torque a For 2 Pumps 34 40N m 25 30lb ft b For 3 Pumps 45 54N m 35 40lb ft 8 Center th...

Page 10: ...he suction line is in position to allow water to enter The suction line may be buried or blocked 7 Do not allow any point of the suction hose to be higher than the suction connection on the pump A trapped air pocket can form and prevent priming 8 The pump will not operate properly under a positive suction head condition Reduced Capacity 1 The discharge line may be too small too high or too long ca...

Page 11: ...5538 ce 6538 ce Gas 10 ...

Page 12: ...0250 2 1 2 13 x 2 1 2 Hex Screw L W Wheel Mtg 20 21 22 P3305A P3305A 1 Connecting Rod 22A W63 5008 175 W63 5008 175 1 Retaining Ring 24 P5581 P5581 1 Connecting Rod Bearing w W33 3 16 Grease Fitting 25 W70 807 W70 807 2 Woodruff Key 26 P5583 P5583 1 Crank Arm 27 W35 C12329CRW1 W35 C12329CRW1 1 Lip Seal 28 A010 050 0150 A010 050 0150 1 1 2 13 x 1 1 2 Hex Screw 29 BC090 C031 031 BC090 C031 031 1 5 1...

Page 13: ... 5 16 18 x 1 Socket Screw LKI W 54 P5601 P5601 1 3 16 Sq x 1 Key 58 P3365 P3365 1 3 NPT Strainer 63 P3691 P3691 1 Crank Arm Guard 64 DC290 X19 050FZ DC290 X19 050FZ 2 10 24 x 1 2 Washer Head Self Tap Screw Flap Valve Assemblies Available Requires two per pump SA 10001B Buna N SA 10001N Neoprene SA 10002N Neoprene with Cloth Insert Diaphragm Pump Rebuild Kits Available Diaphragm and Flapper Assembl...

Page 14: ...13 5538 ce 6538 ce Gas ...

Page 15: ...ock Washer Models 5538 6538 Wheel Mounting Close Coupled Ref No 5538 Aluminum 6538 Cast Iron Qty Description 1 P3320A P3320A 1 Towing Pole 2 P4779A P4779A 2 Stub Axle 3 P3327 P3327 1 Bumper 4 W27 4A W27 4A 2 Wheel 8 x 1 75 Semi Pneumatic 5 W63 5133 75 W63 5133 75 2 Retaining Ring 6 A010 031 0225 A010 031 0225 2 5 16 18 x 2 1 4 Hex Screw H N L W F W 7 A010 037 0125 A010 037 0125 4 3 8 16 x 1 1 4 He...

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