147
Maintenance and Service
Operator's Manual GB
9.6.3
Symptom
Probable cause
Action
Hoist will not hoist/pull rat-
ed load.
Inadequate hydraulic system
supply pressure.
Verify hydraulic system
supply pressure and correct
as required.
Damaged hoist motor.
Go to a HIAB service work-
shop to have the motor re-
placed.
Hoist center line is distorted
due to uneven mounting sur-
face.
Contact a HIAB service
workshop.
Binding load carrying
sheaves.
Inspect and repair or lubri-
cate sheaves as required.
Hoist will not turn at rated
speed.
Inadequate hydraulic system
supply volume.
Verify hydraulic system
supply volume and correct
as required.
Damaged hoist motor.
Go to a HIAB service work-
shop to have the motor re-
placed.
Hoist center line is distorted
due to uneven mounting sur-
face.
Contact a HIAB service
workshop.
Binding load carrying
sheaves.
Inspect and repair or lubri-
cate sheaves as required.
Hoist will not hold the load.
The rope is wound onto the
drum in the wrong direction.
Spool rope according to sec-
tion in this manual: Course
and requirements of the
rope.
Clutch assembly is dam-
aged.
Verify and replace as re-
quired.
Brake Friction or Separator
Plates are worn or damaged.
Verify and replace as re-
quired.