Komatsu HM400-5, Руководство по эксплуатации и техническому обслуживанию

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2.
Move dump lever (3) to “RAISE” position, then depress the
accelerator pedal.
The dump body rises.
If the dump lever is released when it is at “RAISE” position,
it is held at “RAISE” position and the dump body will con-
tinue to rise.
The dumping speed increases in proportion to the engine
speed.
When the dump body rises to the previously set position,
dump lever (3) returns to “HOLD” position.
The dump body is then held at that position.
3.
If it is necessary to raise the dump body further, operate
dump lever (3) to “RAISE” position.
The dump body rises further.
If dump lever (3) is released, dump lever (3) will return to
“HOLD” position and the dump body will stop at that posi-
tion.
While raising the dump body, when the dump body ap-
proaches the maximum tilt angle, release the accelerator
pedal in order to avoid any impact load on the hydraulic
circuit or hoist cylinder.
REMARK
• When the dump body is not seated, the engine speed is limited to 1800 rpm or below to protect the
work equipment pump.
And if the dump body is not lowered when the steering oil temperature is low (25 °C or below), the en-
gine speed is limited to 1500 rpm or below.
• During the dump body “RAISE” operation, if you set the dump lever to any position other than “RAISE”
once and set it to “RAISE” again, the dump body RAISE operation is delayed.
• To raise the dump body fastest, depress the accelerator pedal fully while the dump body is seated and
then set the lever to “RAISE” position.
(Above cuts the time shorter than depressing down on the accelerator after setting the dump lever to
RAISE position.)
4.
Set dump lever (3) to “LOWER” position.
The dump body starts lowering.
OPERATION MACHINE OPERATIONS AND CONTROLS
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