Adjusting the pressure of the main relieve valve
The pressure of the main relieve valve is all ready adjusted in the factory, and it can’t be adjusted
generally. The following is an example of 3t truck to specify how to adjust the pressure.
(1). Put 125 percent of the rated load (2000kg) on the forklift stable.
(2).Step the accelerated pedal to the end, control the lift pole, if the forklift can get the height of
300mm,the main relieve valve is all right. Otherwise, adjust it as step (3).
(3).If the forklift can’t work, enhance the pressure main relieve valve, remove the front soleplate,
loosen the tightening nut of the main relieve valve, screw the adjusting nut clockwise to enhance
the pressure of the main relieve valve. If the height of lift is higher than 300mm, screw the adjust
nut anti-clockwise to reduce the pressure.
(4).Step the accelerated pedal to the end to make the forklift in the height range of 0-300mm. Otherwise,
adjust it as step (3).
Warning:
·The load should be put stably.
·Don’t adjust if the pressure is already adjusted correctly.
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