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15
5. Trouble Shooting
ATTENTION: If the trouble could not be fixed by yourself, please do not hesitate to contact us for help .We will offer our service
at the earliest time we can. By the way, your troubles will be judged and solved much faster if you could provide us more details
or pictures of the trouble.
TROUBLES
CAUSE
SOLUTION
Motor does not run and
will not raise
The wire connection is loose.
Check and make a good connection.
The motor is burnt
Replace it.
The limit switch is damaged or the wire
connection is loose.
Connect it or adjust or replace the limit
switch.
Motor runs but will not
raise
The motor run reversely.
Check the wire connection.
Overflow valve is loose or jammed.
Clean or adjust it.
The gear pump is damaged.
Replace it.
Oil level is too low.
Add oil.
The oil hose became loose.
Tighten it.
The cushion valve became loose or jammed.
Clean or adjusts it.
Platforms go down slowly
after being raised
The oil hose leaks.
Check or replace it.
The oil cylinder is not tightened.
Replace the seal.
The single valve leaks.
Clean or replace it.
The overflow valve leaks.
Clean or replace it.
Electrical unloading valve leaks.
Clean or replace it.
Raising too slow
The oil filter is jammed.
Clean or replace it.
Oil level is too low.
Add oil.
The overflow valve is not adjusted to the right
position.
Adjust it.
The hydraulic oil is too hot ( above 45°).
Change the oil.
The seal of the cylinder is abraded.
Replace the seal.
Lowering too slow
The throttle valve jammed.
Clean or replace.
The hydraulic oil is dirty.
Change the oil.
The anti-surge valve jammed.
Clean it.
The oil hose jammed.
Replace it.
