Komatsu Galeo HD405-7R, Operation & Maintenance Manual

Page: 179 / 361

.
OPERATION
TROUBLESHOOTING
This machine must not be towed except in emergencies. When towing the machine, take the following precautions.
When towing a machine, tow it at a low speed of less than 2 km/h (1.2 MPH), and for a distance of a few meters
to a place where repairs can be carried out. The machine should be towed only in emergencies. If the machine
must be moved long distances, use a transporter.
Use a towing machine 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.
Use the specified hook for both the towing machine and the machine being towed.
To protect the operator if the towing wire or towing bar breaks, install protective plates on both the towing machine
and the machine being towed.
There are towing hooks under the front frame and under the rear axle. Do not use any other part for the towing
hook.
When fitting the towing wire, check the condition of the hook to make sure that there is no problem.
Keep the angle of the towing wire as small as possible.
Keep the angle between the center lines of the two machines to within 30 degrees.
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.
If the pressure in a hydraulic circuit has dropped because of leakage of oil, the parking brake will be applied, so
release the parking brake before towing.
Before releasing the parking brake, always put blocks under all four wheels. If the wheels are not blocked, there
is danger that the machine may move.
Connect with the towing wire or drawbar, and remove the blocks from the wheels when the disabled machine is
in a condition where it cannot run away.
When carrying out the operation to release the parking brake, check that the surrounding area is safe.
If the parking brake is released, the brakes will not work, so pay careful attention to safety.
When towing down a slope, use two towing machines. One machine should be uphill from the disabled machine
and should be connected with towing wire or a drawbar to pull the disabled machine back and keep it stable. The
other machine should tow the disabled machine downhill.
3 - 130