7 Maintenance / Cleaning
OM Hydraulic Aggregate, Version 1.0 01/2013
49
Cause
Error
Error rectification
The engine/motor is run-
ning, the hydraulically
driven devices are not
moving to the limit posi-
tion.
Too little oil in the tank.
●
Top up oil.
OM, 5.1. Commis-
sioning / Operation
The oil volume is not suf-
ficient for the connected
tools.
●
Reduce number of
tools.
The engine/motor is run-
ning, the hydraulically
driven devices are not
moving.
Too little oil in the tank.
●
Top up oil.
OM, 5.1. Commis-
sioning / Operation
Pressure relief valve,
pump or coupling defec-
tive.
●
Replace the defective
part.
Hydraulic lines not con-
nected correctly or de-
fective.
●
Check the screw con-
nections, couplings
and lines.
Oil escaping from filler
neck.
Too much oil in the tank.
●
Drain oil from tank.
Oil in oil tank overflow-
ing.
Seals leaking.
●
Replace the defective
seal.
A layer of water can be
seen on the oil.
Formation of conden-
sate.
●
Oil and filter change.
Quick-release couplings
cannot be connected.
Coupling defective.
●
Replace coupling.
The tool is loaded which
produces a hydraulic
pressure.
●
Rectify the load acting
on the tool.