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4. Drive the vehicle away.
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. Troubles could be judged and solved much faster when more details or pictures could be provided.
TROUBLES
Abnormal noise
Motor does not run and
will not rise
Motor runs but will not
raise
Carriages go down
slowly after being raised
Raising too slow
Lowering too slow
The steel cable is
abraded
POSSIBLE CAUSES
Abrasion exists on insider surface of the posts.
Trash in the post.
Loose wire connection
Blown motor.
Damaged limit switch or its wire connection is loose.
The motor run reversely.
Relief valve is not well screwed up or jammed.
Damaged gear pump.
Too low oil level.
The hose connection is loose.
The cushion valve is not well screwed up or jammed.
The oil hose leaks.
Untightened oil cylinder.
The single way valve leaks.
Unloading valve fails to work well.
Slack steel cable
Jammed oil filter
Too low oil level.
The relief valve is not adjusted to the right position.
Too hot hydraulic oil ( above 45°）.
Abraded seal of the cylinder
Inside surface of the posts is not well greased.
Jammed throttle valve
Dirty hydraulic oil
Jammed anti‐surge valve
Jammed oil hose
No grease at installation or out of lifetime
Installation, Operation and Parts Manual
Grease the inside of the post.
Clear the trash
Check and make a good connection.
Replace it.
Adjust or replace the limit switch.
Check the wire connection.
Clean or make adjustment
Replace it.
Add oil.
Tighten it.
Clean or make adjustment
Check or replace it.
Replace the seal.
Clean or replace it.
Clean or replace it.
Check and adjust the tightness.
Clean or replace it.
Add oil.
Make adjustment.
Change the oil.
Replace the seal.
Add grease.
Clean or replace.
Change the oil.
Clean it.
Replace it.
Replace it.
26
MJ-C10
SOLUTIONS
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