HANGCHA CPD30J - Fault

28
5.2 Fault
Fault
Probable cause
Corrective action
Fork arm carrier or
mast tilt by itself.
1.Tilt cylinder and ring abraded
excessively
Replace piston ring tilt cylinder.
2. The hydraulic control valve spring is
inoperative.
Replace it.
The fork arms
carrier moves up
and down
sluggishly.
1. Caused by piston jamming or bent
piston rod.
Replace the faulty parts.
2. Too much dirt is accumulated in the
cylinder.
Strip it down and clean.
Forks are lifted or
lowered
unsmoothly.
1. Carriage bracket assembly out of
adjustment.
Adjust clearance with thrust metal
and carriage side roller.
2. Insufficient clearance between inner
and outer masts or rollers and mast.
Adjust clearance with rollers.
3. Biting foreign materials between
moving part.
Remove foreign materials.
4. Insufficient lubrication.
Apply grease on contact surfaces
of sliding parts.（butter）
5. Bent carriage bracket assembly.
Repair or replace.
Forks are lifted
unevenly
1. Lift chains out of adjustable.
Adjust lift chains.
Lift roller does not
rotate
1. Grease stiffened or dirt accumulated
on lift roller and mast sliding surfaces.
Clean and lubricate lift rollers.
2. Improperly adjusted lift roller.
Adjust.
Excessive mast
noise
1. Insufficient lubrication.
Lubricate.
2. Improperly adjusted lift roller, side
roller and back-up metal.
Adjust.
3. Rubber pad on lower of outer mast is
useless for container fork lift truck.
By adjusting shims and rubber
pad, piston rod is in touch with
bottom of cylinder body after
inner mast is in touch with rubber
pad.