Uline H-4121 Mode D'emploi page 5

OPERATING ISSUE
The forks do not lift to
maximum height.
The forks do not raise.
The forks do not descend.
Leaks.
The forks descend without
being lowered.
Brake not working.
NOTE: Do not attempt to repair the pallet truck unless you are trained and authorized to do so.
PAGE 5 OF 15
TROUBLESHOOTING
CAUSES
Not enough hydraulic oil.
Not enough hydraulic oil.
The oil has impurities.
Discharge valve is out of adjustment.
Air in the hydraulic oil.
The rod and the cylinder are deformed
resulting from a seriously unbalanced
load.
A part has been broken or been
deformed resulting from an unbalanced
load.
The setting screw is not in the correct
position.
Seals worn out or damaged.
Some parts may be cracked or worn out.
Impurities in the oil cause the discharge
valve to fail to close.
Air in the oil.
Seals worn or damaged.
Discharge valve is out of adjustment.
Cable sheath is improperly mounted.
1-800-295-5510
uline.com
RECOMMENDATIONS
Add more oil.
Add more oil.
Change the oil.
Adjust the setting screw. (As noted
in Operation)
Expel the air. (As noted in
Maintenance)
Replace the rod or cylinder.
Repair or replace component.
Adjust the setting screw. (As noted
in Operation)
Replace seals with new ones.
Check and replace with new
ones.
Change the oil.
Expel the air. (As noted in
Maintenance)
Replace with new ones.
Adjust the setting screw. (As noted
in Operation)
Ensure cable sheath is properly
mounted between pump and
wheels.
0421 IH-4121