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Fault
Probable cause
Action
Crane does not work properly: One
or more crane functions do not
work, or not properly. Lifting
capacity is much less than normal.
Operating speed is significantly
reduced. The service lamp is lit.
The system has
detected a fault
Contact a Hiab authorised
service workshop.
The hydraulic pump makes a noise.
Three causes:
Warning! Stop
using the crane immediately!
Oil tank filler cap air
filter is blocked.
Clear the blockage or
replace the entire filler cap.
Oil level in the tank
is too low.
Top up the oil tank and
bleed the hydraulic system.
The pump is faulty
Go to a Hiab authorised
service workshop.
The stabiliser extensions do not
slide out.
The extensions are
still locked.
Unlock the extensions.
Hydraulic fault.
Go to a Hiab authorised
service workshop
The slewing movements are
irregular or cause abnormal noises.
Insufficient oil in the
hydraulic system.
Top up the oil tank
Insufficient oil in the
slewing housing.
Top up the oil in the slewing
housing to the required
level.
The upper slewing
bearing is not
properly lubricated.
Lubricate the bearing
The bearings in the
slewing housing are
damaged.
Go to a Hiab authorised
service workshop
Add-on equipment does not work
properly (rotator, hoist, etc.)
Connectors not
properly connected.
Reconnect the add-on
equipment, according to the
instructions.
Other defect.
Go to a Hiab authorised
service workshop
Leak on hydraulic system: leaking
coupling, hose or line
Danger! Keep well away from any
oil leak.
1. Press a Stop button
2. Disengage the PTO.
3. Contact a Hiab
authorised service
workshop
Maintenance and Service
HIAB 410K PRO
75