Komatsu WA500-6H, Operation & Maintenance Manual

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3.3 Operation Operation
3-120
WA500-6H – VEAM430100
3. Set parking brake switch (4) to the ON position (A) to apply
the parking brake.
REMARK
When the parking brake is applied, the transmission is automati-
cally returned to neutral.
Transmission cut-off function
When the transmission cut-off switch is turned ON, the pilot
lamp lights up and the following transmission cut-off function is
actuated.
Position (a): ON
Position (b): OFF
When the left brake pedal is depressed, the brake is actuated,
and in addition, the transmission is shifted to neutral at the pre-
selected brake pedal depression position.
REMARK
The cut-off function is actuated only with the left brake pedal.
When the transmission cut-off switch is at the OFF position, the
left brake pedal works in the same way as the right brake pedal.
For details of adjusting the brake pedal depression position, see
"Adjusting transmission cut-off position (3-121)"“.
Raise or lower the pre-selected brake pedal depression position
to adjust the cut-off to match the type of work shown below.
z
When carrying out scooping-up work, lower the brake pedal
depression position for the cut-off (transmission shifted to
neutral). In this setting, the transmission driving force is cut
at a point where there is ample braking force, so this pre-
vents the machine from slipping down.
z
When approaching dump trucks during loading operations,
raise the brake pedal depression position for the cut-off
(transmission shifted to neutral). In this setting, the fine con-
trol of the braking immediately before dumping the load can
be carried out with the brake only, so this makes it easy to
control and allows the machine to be brought to a soft stop.
GK050126
A
4
GK050062
a
b
GK043172
GK032213