Troubleshooting
07
08
This chapter enables the user to identify and rectifies basic faults and the effects of incorrect
operation. When trying to locate a fault, proceed in the order shown in the table below. If, after
carrying out the following remedial action listed in“actions”, the stacker cannot be restored to
operation, contact the manufacturer’s after-sale service department. Additional troubleshooting
must only be performed by the manufacturer’s specialist service engineers. The manufacturer's
customer service department is specially trained to carry out these operations.
1
2
3
4
5
The forks
descended without
operation
Note: Do not attempt to repair the stacker unless you are trained in the professions.
Impurities in the oil cause
the valve to be unable to
close tightly
Seals damaged
Adjusting nut(4-2) or
adjusting screw(4-3) in
wrong positions
Change hydraulic oil
Replace the damaged
seals with new seals
Adjust nut(4-2) or adjusting
screw(4-3)
Fault
Possible cause
Action
No.
The forks cannot
be lifted to max.
height
The forks cannot
be lifted
The forks cannot
be lowered
Oil leakage
The hydraulic oil is
insufficient
The hydraulic oil is
insufficient
The hydraulic oil has
impurities
Adjusting nut(4-2) or
adjusting screw(4-3) in
wrong positions
Air enters into the cylinder
Seals damaged
The piston rod or the frame
is deformed resulting from
overloading or cargo
slanting to one side
The forks was kept in raised
position for extended period
of time, then the piston rod
is exposed to the air and gets
rusted , which blocks the
motion of the piston
Adjusting nut(4-2) or
adjusting screw(4-3) in wrong
positions
Rollers rusted and blocked
Seals damaged
Parts damaged
Replace the damaged seals
with new seals
Replace the damaged parts
with new parts
Add the hydraulic oil
Add the hydraulic oil
Change hydraulic oil
Adjust nut(4-2) or adjusting
screw(4-3)
Put the finger grip handle in
the upper position and press
the handle dozens of times
Replace the damaged seals
with new seals
Replace the related parts of
the cylinder or the frame with
new ones
Keep the forks at the lowest
position while not in use, and
keep piston rods lubricated in
time
Adjust nut(4-2) or adjusting
screw(4-3)
Lubricate rollers
H10
/
15
/
20
Series Manual Pallet Stackers
