Multiquip QP4TE manual Troubleshooting ENGINE/PUMP

Page 27

TROUBLESHOOTING (ENGINE/PUMP)

TABLE 5. ENGINE TROUBLESHOOTING (Continued)

 

SYMPTOM

 

 

POSSIBLE PROBLEM

 

 

SOLUTION

 

 

 

 

 

 

 

 

 

Operation not satisfactory

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Governor adjustment improper?

 

Adjust governor to correct lever.

 

 

 

 

 

 

 

 

 

 

 

 

Governor spring defective?

 

Clean or replace ignition.

Rotational speed fluctuates.

 

 

 

 

 

 

 

 

Fuel flow erratic?

 

Check fuel line.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Air taken in through suction

 

Check suction line.

 

 

 

line?

 

 

 

 

 

 

 

 

 

 

 

 

 

Recoil starter not working

 

Dust in rotating part?

 

Clean recoil starter assembly.

 

 

 

 

 

 

 

properly.

 

Spring spring failure?

 

Replace sprial spring.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TABLE 6 PUMP TROUBLESHOOTING

 

 

 

 

 

 

 

 

 

SYMPTOM

 

POSSIBLE PROBLEM

 

SOLUTION

 

 

 

 

 

 

 

 

 

 

 

 

Not enough priming water in the housing?

Add water.

 

 

 

 

 

 

 

 

 

 

 

 

 

Engine speed too low?

 

Increase throttle.

 

 

 

 

 

 

 

 

 

 

 

 

 

Strainner plugged?

 

Clean strainer.

 

 

 

 

 

 

 

 

 

 

 

 

 

Suction hose damaged?

 

Replace or repair hose, and clamps

 

 

 

 

 

 

 

 

 

 

 

 

 

Air leak at suction port?

 

Check that fittings are tight and properly sealed.

 

 

Pump does not take on water.

 

 

 

 

 

 

 

 

Pump is located too high above water line?

Move pump closer to water.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Debris collecting in pump housing?

 

Clean pump housing.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Too much distance between impeller and volute.

Adjust clearance by adding shims or replace impeller.

 

 

 

 

 

Min. .006" - Max. .020"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Water leaking out weep hole between pump and

Check condition of mechanical seal and gaskets,

 

 

 

 

 

engine?

 

between pump end and engine housing.

 

 

 

 

 

 

 

 

 

 

 

 

 

Engine speed too low?

 

Increase throttle speed.

 

 

 

 

 

 

 

 

Pump takes in water, little or no

Suction strainer partially plugged?

 

Clean strainer.

 

 

discharge.

 

 

 

 

 

 

 

 

Impeller/Volute worn?

 

Adjust clearance by adding shims or replace

 

 

 

 

 

 

 

 

 

 

 

 

 

 

impeller/volute

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fittings/clamps are not sealed properly?

Tighten, replace or add clamp. (Keep extra seals on

 

 

Suction hose leaks at inlet.

 

pump)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Hose diameter is too large?

 

Use smaller diameter hose or replace hose.

 

 

 

 

 

 

 

 

 

 

Discharge does not stay on

 

Pressure too high?

 

Check pressure, add additional clamp.

 

 

 

 

 

 

 

 

 

coupling.

 

Hose kinked or end blocked?

 

Check hose.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Impeller jammed or blocked?

 

Open pump cover and clean dirt and debris from

 

 

 

 

 

 

 

 

inside housing.

 

 

Impeller does not turn: pump is

 

 

 

 

 

 

Impeller and volute binding?

 

Adjust clearance by removing shim from behind

 

 

hard to start.

 

 

 

 

 

 

impeller.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Defective engine?

 

See Hatz Diesel Engine Owner's Manual.

 

 

 

 

 

 

 

 

 

 

OPERATION AND PARTS MANUAL — REV. #1 (10/10/08) PAGE 27

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Page 26 Page 28
Contents Model QP4TE Proposition 65 Warning Operation & Parts Manual REV. #0 01/25/06 Table of Contents Ordering parts has never been easier Parts Ordering ProceduresSafety Messages Safety InformationGeneral Safety Engine Safety Fuel Safety Transporting Safety Operation and Parts Manual REV. #1 10/10/08 Application General InformationSpecifications Pump Specifications Engine Specifications EngineUsed in general de-watering applications. Typical Pump ComponentsInitial Servicing Basic EngineInspection PRE-INSPECTION EngineBefore Starting PRE-SETUP PumpInitial START-UP Engine Normal Shutdown Initial START-UP EnginePump Vacuum Test Maintenance PumpPressure reading may vary Engine Maintenance Schedule Maintenance Engine24 -OPERATION and Parts Manual REV. #1 10/10/08 Pump Storage Preparation for Long -TERM StorageTroubleshooting Engine Troubleshooting ENGINE/PUMP Explanation of Code in Remarks Column QP4TE 1 to 5 Units with Suggested Spare PartsPump Assy Pump Assy 32 -OPERATION and Parts Manual REV. #1 10/10/08 Part Name QTY Remarks Robin EX270D50220 Engine AIR Cleaner Assy Base CP Robin EX270D50220 Engine Camshaft Assy PIN, CAMSHAFT, 9DX78.5L Robin EX270D50220 Engine Carburetor Assy Valve Throttle Robin EX270D50220 Engine Crankcase Assy Robin EX270D50220 Engine Crankcase Assy Robin EX270D50220 Engine CRANKSHAFT/PISTON Assy Crankshaft CP Robin EX270D50220 Engine Cylinder Head Assy Collet Valve Robin EX270D50220 Engine Fueltank Assy Part Name Robin EX270D50220 Engine Governor Assy Governor Lever Robin EX270D50220 Engine Ignition COIL/FLYWHEEL Assy Robin EX270D50220 Engine Ignition COIL/FLYWHEEL Assy Robin EX270D50220 Engine Muffler Assy Muffler CP Robin EX270D50220 Engine OIL Sensor Assy OIL Sensor CP Robin EX270D50220 Engine Recoil Starter Assy LABEL, Trade Mark 64D Terms and Conditions of Sale Parts Operation and Parts Manual REV. #1 10/10/08 HERE’S HOW to GET Help
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