When Engine Can Be Used - Komatsu WA500-6H Operation & Maintenance Manual

Operation
Check that the tow rope or bar is of ample strength for the
weight of the machine being towed. If the machine being
towed must travel through mud or up hills, use a tow rope or
bar of a strength of at least 1.5 times the weight of the
machine being towed.
Keep the angle of the tow rope as small as possible. Keep
the angle between the center lines of the two machines to
within 30 degrees.
If the machine is moved suddenly, the tow rope or bar will be
subjected to an excessive load, and it may break. Start the
machine gradually and travel at a constant speed.
The towing machine should normally be of the same class
as the machine being towed. Check that the towing machine
has ample braking power, weight, and rimpull to allow it to
control both machines on slopes or on the tow road.
When towing a machine downhill, use a larger machine for
towing to provide ample rimpull and braking power, or con-
nect another machine to the rear of the machine being
towed. This way it is possible to prevent the machine from
losing control and turning over.
Towing may be carried out under various differing conditions,
so it is impossible to determine beforehand the requirements
for towing. Towing on flat horizontal roads will require the
minimum rimpull, while towing on slopes or on uneven road
surfaces will require the maximum rimpull.
Connect a wire rope to the part indicated with the arrow in
the diagram at right.

When engine can be used

If the transmission and steering wheel can be operated, and
the engine is running, it is possible to tow the machine out of
mud or to move it for a short distance to the edge of the
road.
The operator should sit on the machine being towed and
operate the steering in the direction that the machine is
towed.
WA500-6H – VEAM430100
3.7 Troubleshooting
GK050089
3-175