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Idiomas disponibles
Idiomas disponibles
Troubleshooting
Condition
Pump does not operate.
Pump runs excessively.
Pump speeds up or runs erratically.
Pump runs, but output is low.
Lubricant leaking from safety
unloader valve.
Lubricant leaking from weep
hole in vent valve.
Possible cause
Low inlet pressure.
•
Closed supply line shut off valve.
•
No power to solenoid valve.
•
Faulty solenoid.
•
Faulty pressure control valve.
•
Insufficient hydraulic fluid supply.
Sufficient inlet pressure.
•
Closed fluid outlet line.
•
Flow control valve is fully closed.
•
Pump is stalled due to grease
backpressure.
•
Pump is seized or damaged.
Pump tube malfunction.
Outlet check damage or contamination.
Vent valve damage or contamination.
System component leaking.
Vent valve not receiving proper pressure to
stay closed.
Injector bypassing.
Low level of grease or reservoir is empty.
Pump piston or checks are worn.
Insufficient hydraulic fluid supply.
Inlet pressure too low.
Faulty inlet or discharge check valve in pump.
Pressure of system set too high.
Safety unloader damaged or contaminated.
Vent valve lubricant seal damaged.
11
Corrective action
Turn on or connect hydraulic supply to pump.
Open shut-off valve.
Correct electrical fault.
Replace solenoid.
Replace pressure control valve.
Check hydraulic supply for proper pressure/flow.
Check outlet line and clear obstructions.
Readjust flow control valve to
/
turn open.
1
4
Check vent valve in system.
Dismantle pump and repair defective or seized
component. Refer to pump manual 404693.
Refer to pump manual 404693.
Repair check or remove contamination.
Repair vent valve or remove contamination.
Repair leaks.
Orifice fitting plugged.
Repair injectors.
Refill reservoir.
Refer to pump manual 404693.
Check hydraulic supply and adjust flow.
Replace pressure control valve.
Replace faulty components. Refer to
pump manual 404693.
Adjust pressure switch setting.
Replace safety unloader.
Replace lubricant seal.
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