Maintenance and Service
8.6.2
Fault
Probable cause
Action
Crane does not work proper-
The system has detected a
Contact a HIAB service
ly: One or more crane func-
fault.
workshop.
tions do not work or not
properly. Lifting capacity is
much less than normal. Op-
eration speed is significantly
reduced. The service lamp is
lit.
One remote control function
The remote control lever
1.
Push in the stop but-
inoperative.
was not in neutral at start
ton.
up.
2.
Make sure that all lev-
ers are in neutral.
3.
Pull out the stop but-
ton.
Check the cables between
the DA-modules.
The hydraulic pump makes
Oil tank filler cap air filter
Clear the blockage or re-
a noise. Three causes:
is blocked.
place the entire filler cap.
Warning! Stop using the
Oil level in the tank is too
Top up the oil tank and
crane immediately!
low.
bleed the hydraulic system.
The pump is faulty.
Go to a HIAB service work-
shop.
The stabiliser extensions do
The extensions are still
Unlock the extensions.
not slide out.
locked.
Hydraulic fault.
Go to a HIAB service work-
shop.
The slewing movements are
Insufficient oil in the hy-
Top up the oil tank.
irregular or cause abnormal
draulic system.
noises.
Insufficient oil in the slew-
Top up the oil in the slew-
ing housing.
ing housing to the required
level.
The upper slewing bearing
Lubricate the bearing.
is not properly lubricated.
The bearings in the slewing
Go to a HIAB service work-
housing are damaged.
shop.
Operator's Manual GB
99