Komatsu H75051, Operation & Maintenance Manual

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NOTICE
Frequent braking increases the axle oil temperature. As a result, the alarm buzzer may sound and the
warning lamp may light up for protection of the brake discs. Observe the following ways of operation to
prevent the increase of the axle oil temperature.
• Try to avoid high speeding and sudden braking.
• Try to apply the brake on and off. Try not to apply the brake continuously.
• Try gradual acceleration and braking rather than sudden acceleration and braking.
• When traveling downhill, use a low speed range so that the engine braking works well.
The brake pedal is used to apply the brakes.
Inching function
When depressing the brake pedal lightly, the inching function of
HST actuates. Accordingly, you can decelerate and stop the
machine without decreasing the engine speed.
Use the inching function when the machine approaches the
dump truck while raising the boom.
REMARK
When performing the work by decelerating and stopping the
machine with the brake pedal and accelerator pedal, use the
L.H. brake pedal because it is more convenient.
ACCELERATOR PEDAL
The accelerator pedal is used to adjust the speed and output of
the engine.
It freely controls the engine from low idle to high idle.
OTHER COMPONENTS
METHOD FOR OPENING AND CLOSING CAB DOOR
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CAUTION
• Always check that the cab door is locked in position,
both when it is open and when it is closed.
• Always place the machine on a level ground when
opening or closing the door.
Avoid opening or closing the door on a slope, since
there is a danger that the operating effort may sudden-
ly change.
• Hold the door handle and knob whenever opening or
closing the door.
• Be careful not to get your hands caught between the
front pillar or center pillar.
• When there is anyone inside the cab, always call out a
warning before opening or closing the door.
EXPLANATION OF COMPONENTS OPERATION
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