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Operating Instructions
145 052 147
C 9700 ... C 9.88 H
Malfunctions, cause, remedy
Problems in the Hydraulic System and
Steering
NOTE
These notices only apply for valve arrange-
ments conforming to our circuit diagrams or
approved by Bucher.
Problem Cause Remedy
Lifter or hydraulic cylinders not lifting,
although control valve can be moved
normally. No build-up of pressure
(steering working normally)
Pressure relief valve jammed due to
foreign objects
Remove and clean pressure
limitation valve LU 08 SCS-OM2,
but do not change the pressure
setting!
Loss of lifting power Pressure setting too low
Oil level too low
Reset pressure with pressure gauge
(190 bar)
Fill up specified type of oil
Operating pressure is only reached
with high RPM
Pump defective Replace pump
Manual control valve jammed Radial torsion
Dirt
Tension screws too tight or not all
tightened to the same torque
Maximum torque 25 Nm (2.5 mkp)
Remove and clean valve