PAGE 1 OF 3
0221 TH-1785
H-1785, H-2507
1-800-295-5510
uline.com
SCISSOR LIFT TRUCK
TROUBLESHOOTING
OPERATING ISSUE
CAUSES
RECOMMENDATIONS
The forks do not lift to
maximum height.
Not enough hydraulic oil.
Add more oil.
The forks do not raise.
Not enough hydraulic oil.
The oil has impurities.
Discharge valve is out of adjustment.
Air in the hydraulic oil.
Add more oil.
Change the oil.
Adjust the setting screw.
Expel the air.
The forks do not descend. The rod and the cylinder are deformed
from a seriously unbalanced load.
A part has been broken or been
deformed from an unbalanced load.
The setting screw is not in the correct
position.
Replace the rod or cylinder.
Repair or replace component.
Adjust the setting screw.
Leaks
Seals worn out or damaged.
Some parts may be cracked or worn
out.
Replace seals with new ones.
Check and replace with new ones.
The forks descend without
being lowered.
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.
Change the oil.
Expel the air.
Replace with new ones.
Adjust the setting screw.
NOTE: Do not attempt to repair the Scissor Lift Truck unless you are trained and authorized to do so.
Para Español, vea página 2.
Pour le français, consulter la page 3.
