EP Equipment IMOW ICE251, Operation Manual

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Low
discharge
pressure on
oil pump.
Worn bearing damaged
backup ring and O-ring.
Replace faulty parts.
Low
discharge
pressure on
oil pump.
Worn bearing damaged
backup ring and O-ring.
Replace faulty parts.
Maladjusted relief valve.
Readjust to specified pressure using
pressure gauge.
Air in oil pump.
Retighten suction side pipe.
Add oil in oil tank.
Checks pump oil seal.
Do not operate pump until bubbles in
tank disappear.
Noisy oil
pump
Cavitation due to crushed
suction hose or clogged
strainer.
Adjust or replace crushed hose and
clean strainer.
Air being sucked from loose
suction side joint.
Retighten each joint.
Cavitation due to too high oil
viscosity.
·replace with new oil having proper
viscosity for temperature at which
pump is to be operate.
·to operate when oil temperature is
normal.
Bubbles in hydraulic oil.
Determine cause of bubbles and
remedy.
Oil leaking
from oil
pump
Faulty oil seal on pump, faulty
O-ring
or worn sliding
surfaces on pump.
Replace faulty parts.
6.4.2 Control Valve
Trouble Probable cause Corrective action
Pressure of relief
valve is not steady
or too low.
Loose of pressure-adjust screw. Readjusted and retighten.
Distorted or damaged
pressure-adjust spring.
Replace.
Worn or blocked relief valve
core.
Replace or clean.
Pump abated.
Examine and repair
pump.
Trouble Probable cause Corrective action