Haklift Oy
Asessorinkatu 3-7
20780 Kaarina, Finland
Tel. +358 2 511 5511
www.haklift.com
Lifting Solutions Group
Axel Johnson International
6. POSSIBLE FAILURES AND TROUBLE SHOOTING
No.
Failure
Cause analysis
Trouble shooting
1
The lifting height
cannot meet the
desired
requirement.
Insufficient amount of operation oil.
To fill oil into the oil cylinder, loose
the bolt, fill in filtered and clean
operation oil to the oil inlet height and
then tighten the bolt.
2
When the handle
is pulled, the forks
do not rise.
1. The viscosity of the operation oil
is too great or no operation oil has
been filled in.
Replace or fill in operation oil
according to the oil quantity
regulated.
2. There is foreign matter in the
operation oil, which makes the oil
inlet valve unable to close tightly.
Filter out the foreign matter or
replace operation oil according to the
stipulation.
3. The oil draining valve, control
hand lever and tension spring do not
work, control handle lever not at the
lowest position or blocked by other
foreign matter.
-Examine the tension spring to see if
it is in order.
-Adjust the control hand lever to the
lowest position.
-Remove foreign matter.
4. The position of the oil draining
valve and control hand
lever/unloading device have not
been correctly adjusted.
Readjust the unloading tension bar
nut position.
3
After being raised,
the forks do not
decline.
1. The control hand lever/unloading
device is not correctly adjusted.
2. Over heavy load deviation, so
permanent piston deformation
occurs.
3. The fork frame, roller or chain
wheel is blocked.
-Adjust as described above.
-Disassemble for maintenance or
replace the piston rod.
-Disassemble for maintenance or
replace bearing.
4
Oil leakage.
1. Damaged or failed seal washer.
2. There is a slight crack or through
hole in individual component.
3. Loose thread connection or non-
tightly pressed sealing ring.
-Replace with new sealing washer.
-Repair or replace new components.
-Repair and tighten.
