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0414 IH-4121
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. (As noted in
Operation)
Expel the air. (As noted in Maintenance)
The forks do not descend.
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.
Replace the rod or cylinder.
Repair or replace component.
Adjust the setting screw. (As noted in
Operation)
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. (As noted in Maintenance)
Replace with new ones.
Adjust the setting screw. (As noted in
Operation)
troUBleshootinG
note: do not attempt to repair the pallet truck unless you are trained and authorized to do so.
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