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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
No hydraulic power to pump.
No pressure:
• Closed supply line shut off valve.
• No power to solenoid valve.
• Faulty solenoid.
• Pressure reducing valve is set too low.
• Insufficient hydraulic fluid supply.
Pressure is inadequate:
• Closed fluid outlet line.
• Pump is stalled due to grease back pressure.
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 keep it closed. Orifice fitting plugged.
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.
Corrective action
Turn on or connect hydraulic supply to pump.
Open shut-off valve.
Correct electrical fault.
Replace solenoid.
Reset pressure reducing valve.
Check hydraulic supply for proper pressure and flow.
Check outlet line and clear obstructions.
Check vent valve in system.
Dismantle pump and repair defective or seized
component. Refer to manual 404584.
Refer to manual 404584.
Repair check or remove contamination.
Repair vent valve or remove contamination.
Repair leaks.
Repair injectors.
Refill reservoir.
Refer to manual 404584.
Check hydraulic supply and adjust flow.
Increase pressure at pressure control valve.
Replace faulty components.
Refer to manual 404584.
Adjust pressure switch setting.
Replace safety unloader.
Replace lubricant seal.
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