Komatsu H75051, Operation & Maintenance Manual

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8.
Release the R.H. brake pedal (4), then depress the accel-
erator pedal (9) to move off.
METHOD FOR SELECTING SPEED RANGE
k k
WARNING
Avoid an abrupt shifting of the speed range while traveling at high speed. Reduce the speed by releas-
ing the accelerator pedal always before selecting the speed range.
Perform the selection of the speed range as follows.
Move the speed range selector switch (1) to the desired posi-
tion to select the speed range.
Position (a): 1st speed
Position (b): 2nd speed
Position (c): 3rd speed
Position (d): 4th speed
REMARK
• If the speed range selector switch is operated slowly or is
stopped in-between speed ranges, the centralized warning
lamp may light up and the alarm buzzer may sound. This
is not a failure in this case.
Operate the speed range selector switch so that the selec-
tion of the speed range is completed within 2 seconds.
• When the machine is traveling at high speed, if the speed
range selector switch is operated to a slower speed range
such as from 4th to 3rd and from 4th to 2nd while depress-
ing the accelerator pedal, the shift down is not performed
in order to protect overrun of the engine.
In such case, the centralized warning lamp lights up and
the alarm buzzer sounds.
If the alarm buzzer sounds, release the accelerator pedal
immediately, depress the brake pedal to reduce the speed
and then select the speed range.
OPERATION MACHINE OPERATIONS AND CONTROLS
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