22
ENGLISH
INSTRUCTION MANUAL
Fault detection
Problem
Cause
Possible solution
Lift function insufficient
Not enough hydraulic oil
Top up hydraulic oil
Fork sticks
1. Too much hydraulic oil
2. Moving parts bent out of
shape
3.
Piston and control screw
stuck
1. Drain a suitable amount of
oil
2. Repair or replace parts
3.
Repair or replace parts
Fork will not lower
1. Lowering function not
working
2.
Mechanical parts defective
or bent out of shape
1. Adjust lowering function
(see section on assembly and
adjustment)
2.
Repair or replace parts
Hydraulic oil leaking
1. Oil seals defective
2. One or more parts worn out
or cracked
3.
Joints loose
1. Replace oil seal
2. Check parts, repair if
necessary
3.
Tighten all joints
Fork cannot be raised
1. Not enough hydraulic oil, or
oil viscosity incorrect
2. Oil
contaminated
3. Air in the hydraulic system
4.
Elevation function not
working
1. Fill with correct viscosity
hydraulic oil
2. Drain contaminated oil.
Refill with new clean oil
3. Bleed hydraulic system (see
section on cleaning and
maintenance)
4.
Adjust elevation function
(see section on assembly and
adjustment)
Fork lowers after elevation
1. Valve
contaminated
2.
Air in the hydraulic system
1. Check valve, replace if
necessary
2.
Bleed hydraulic system (see
section on cleaning and
maintenance)
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