Komatsu WA800-3E0 Series Operation & Maintenance Manual page 179

OPERATION
TRAVELING IN REVERSE AFTER EXCAVATING
NOTICE
q Do not operate the steering immediately after starting
to travel in reverse. The bucket is still thrust into the
rocks, so if the steering is operated, excessive force
will be brought to bear on the bucket or frame, and
there is danger of damage to the frame.
q After shifting the transmission, operate the accelerator
pedal slowly. If the accelerator pedal is operated sud-
denly, the tires will slip and this will cause wear or cut-
ting of the tires.
1. After completing the excavation, shift to R2 and travel in
reverse without operating the steering.
2. As a guideline, reverse travel distance (a) should be 1.2 -
1.5 times the length of the machine. At this distance, the
rolling of the tires can prevent wear to the tires.
In addition, keep an angle (b) of 60° at the intersection
between the straight line from the dilution and the straight
line from the dump truck.
REMARK
Decide the steering procedure to match the stopping point of the dump truck and the condition of the dilution.
When doing this, decide the stopping point for the dump truck so that the operating angle for the steering is less
than 20°.
(1) Gradual steering to left or right
(2) Gradual steering to dilution
(3) Direct line to dilution
3. When driving in reverse, do not raise the bucket more than necessary.
Consider the position of the dump truck, the condition of the road surface, the travel speed, and the speed of
the work equipment when deciding the height of the bucket. However, do not raise the bucket so that the top of
the load is higher than the horizontal line of sight from the operator.
OPERATION
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