SRT55D Off-Highway Truck
3-37
Safety, Operation and Maintenance Manual
Controls and Operating
height;
(3) Decelerate the engine when the last stages
of the body hoists begin to extend to slow the
raising speed as the hoists approach their
maximum extensions;
(4) Pull the lever to “HOLD” position when the
body is raised to the desired height.
Drain the pressure form the pilot valve
before while repairing the raise system and
its control system .
Method: Turn off the engine, operate the
RAISE lever for about 15 times in two
directions, to drain the pressure oil form
the pilot valve.
2. Lower
Lowering the body:
(1) Move the handle to “float” position; then
the body will lower to the frame via gravity;
(2) If the body is required to stay at a certain
height, the handle shall be moved to “HOLD”
position;
(3) If the body does not begin to lower
by its own weight, such as after dumping
downgrade, move the control lever all the way
forward to the 'LOWER' position and power
the body downward until it begins lowering
by gravity. Then move the lever to 'FLOAT'
position in the specially situation.
Caution :
Make sure t h a t t he body is
completely lowered and the control lever is
in 'FLOAT' before releasing the brakes and
moving the machine.
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