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Ⅺ. Common faults and troubleshooting:
Faults
Abnormal
noise
during lifting
Hydraulic
system
has no pressure or
the pressure is too
low
The oil pressure is
not stable
The truck cannot
start
The
direction
ineffective.
26
Possible cause
The oil-absorptive filter is blocked
The oil-absorptive tube leaks and the oil are
foaming.
Hydraulic pump or motor is damaged.
Seal malfunction, and make the air enter oil
pump.
The viscidity of oil is not correct, oil level is
too low.
Malfunction in pump oil-absorptive, and
noise exists.
Oil pump is damaged
There is malfunction in valve pack.
The pipeline is broken or leaking.
The viscidity of oil is not suitable; the
leakage loss is too great.
The cause is the same as that of abnormal
noise.
The lifting cylinder or seal ring is worn.
The quantity of oil is not enough
Storage battery is used up.
The wire terminal is loosened.
The fuse is burn out.
The accelerator is damaged.
The steering device is blocked by the
abnormal matter.
The steering potentiometer is loosened or
invalid.
is
The steering power unit is faulty or wire
terminal is loosened.
Malfunction of steering controller
Trouble shooting
Clean or replace the oil-absorptive
filter
Fasten the tie-in, check the oil level, or
add some oil.
Contact maintenance personnel of our
company
Contact maintenance personnel of our
company
Replace the oil or add some oil
Replace the oil or add some oil
Contact maintenance personnel of our
company
Contact maintenance personnel of our
company
Replace the pipeline or screw down the
tie-in.
Change the oil.
Refer to the treatment methods for
abnormal noise.
Replace the cylinder sleeve or seal ring
Add oil
Inspect, charge, or replace the storage
battery
Screw down the terminal screw
Replace the fuse
Replace accelerator
Clean up the foreign matter.
Replace the potentiometer or screw
down the mounting screws.
Tighten the screws or consult the
maintenance
personnel
company.
Consult the maintenance personnel of
our company.
of
our
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