Operating Manual
26
Original Operating Manual
Fault
Possible cause
Correction
Rotator
When rotating
Rotates too slowly
Oil flow from LT too low
Increase oil flow at LT
Vibration when rotating
Bolts on device loose
Tighten bolts
Bolts on hydraulic motor
loose
Tighten bolts
Jerky rotation
Oil flow stalling
Increase oil flow at LT
No rotation
Couplings are not engaged
Check couplings and
engage
Hydraulic motor defective
Change hydraulic motor
is overloaded
Check weight and torque
required
Slips
is overloaded
Check weight and torque
required
Slides move
downwards
Load not clamped
Clamp load
Clearance
Clearance too large
Bevel gear defective
Replace bevel gear
RJ defective
Replace RJ
Flange tip forwards
Bolts loose
Tighten bolts or replace if
necessary
Oil leakage
On motor
Hydraulic motor leaks
Change hydraulic motor
Bolt loose
Tighten bolt
Shaft seal defective
Renew shaft seal
On gear box
Filling level too high
Check and correct filling
level
Seal defective
Change seal
Solenoid valve
Not functioning
Solenoid coil defective
Replace solenoid coil
No power to the magnet
Inspect power cable and
connections
Legend: LT = lift truck, DBV = Pressure relief valve, WE-Drossel = elbow-type screwed
throttle, RJ = rotary joint