53
Loosed lock-nut of relief valve and
connect-nut between plate and
plate.
Tighten.
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 1.8t 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).
(5).Retighten the tightening nut, fix it on
the front soleplate.
Warning
!
·The load should be put stably.
·Don’t adjust if the pressure is already
adjusted correctly.
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