HELI OPSM - List of Accessories, Spare Parts and Wearing Parts

4
Platform does not lift
Relief valve pressure too low
Adjust it higher
Abnormal inner leakage of lifting oil
cylinder
Replace sealings
Inadequate hydraulic oil
Add a proper amount
of filtered hydraulic oil
Inadequate battery voltage
Charge battery
Oil pump motor damaged
Repair or replace
Oil pump damaged
Repair or replace
Lifting button switch damaged
Repair or replace
Electric lock not opened or damaged
Repair or replace
Serious undervoltage of battery
Charge
Mast disformed due to overloading
Repair or replace
5
Lifting platform cannot
lower after lifted
Mast disformed due to overloading
Repair or replace
Solenoid valve of hydraulic pump out
of control
Exclude solenoid valve
fault
12.1 Methods for adjusting pressure of the relief valve
The pressure of relief valve has already
been adjusted before the truck leaves the
factory. The user is not allowed to adjust at will,
otherwise it will cause danger for the hydraulic
system and safety of the truck. If the oil
pressure does not accord with the stipulated
value, please adjust by professional personnel
according to the following methods which
conform to the testing methods stipulated in
JB/T3300 standards:
1. Unscrew the high-pressure oil pipe, and
mount a pressure gage with measuring
range greater than 20Mpa on the exit of
high-pressure oil.
2. Press the lifting operation button and
measure the system pressure. The rated load is
determined by each truck model.
3. When the oil pressure does not accord with
the stipulated value, unscrew the locknut of
relief valve, and adjust the pressure to the
stipulated value by rotating the
pressure-adjusting screw left/right. When the
screw is adjusted inward, the system pressure
will rise; when the screw is adjusted outward,
the system pressure will fall.
4 . Fasten the locknut after adjustment
13. List of Accessories, Spare Parts and Wearing
Parts
13.1 List of accessories, spare parts and wearing parts
NO.
Name
Use position
Model &
Specification
Q’ty
Remarks
16