Komatsu — TOWING

OM3020.1 12/99 Operation - Section 3 Operating Instructions Page 3-9 NOTE: Failure to "hoist" the body after making an unsuccessful attempt at lowering the body may result in the dump body suddenly lowering after the truck has pulled ahead of the material that was previously preventing the body from lowering. CAUTION! The truck is not to be moved with the dump body raised except for emergency moves only. Failure to lower body before moving truck may cause damage to hoist cylin- ders, frame and/or body hinge pins. To Lower Body (When dumping on flat ground): It is very likely when dumping on flat ground that the dumped material will build up enough to prevent the body from lowering.

In this case, the truck will have to be driven forward a short distance (just enough to clear the material) before the body can be lowered. a. Shift Selector Switch to “Forward”, release Brake Lock, depress Override button and drive just far enough forward for body to clear material. Stop, shift Selector Switch to “Neutral”, apply Brake Lock. b. Move hoist lever forward to “down” position and release. Releasing the lever places hoist control valve in the “float” position allowing the body to return to frame. NOTE: If dumped material builds up at the rear of the body and the body cannot be lowered, then perform steps "c" and "d" below: c.

Move hoist lever back to the "hoist" position to fully raise the dump body. Then release the hoist lever so it returns to the "hold" position. d. Shift Selector Switch to “Forward”, release Brake Lock, depress Override button and drive forward to clear the material. Stop, shift Selector Switch to “Neutral”, apply Brake Lock and lower body again. NOTE: Failure to "hoist" the body after making an unsuccessful attempt at lowering the body may result in the dump body suddenly lowering after the truck has pulled ahead of the material that was previously preventing the body from lowering. CAUTION! The truck is not to be moved with the dump body raised except for emergency moves only.

Failure to lower body before moving truck may cause damage to hoist cylin- ders, frame and/or body hinge pins. 10. With body returned to frame, move Selector Switch to “Forward”, release Brake Lock, and leave dump area carefully. TOWING Prior to towing a truck, many factors must be carefully considered. Serious personal injury and/or significant property damage may result if important safety practices, procedures and preparation for moving heavy equipment are not observed. Do not tow the truck any faster than 5 MPH (8 kph). A disabled machine may be towed after the following MINIMUM precautions have been taken. 2.

If truck is equipped, install hydraulic connections for steering and dumping between towing and towed vehicles. Check towed vehicle for braking system. 1. Shut down engine. 3. Inspect tow bar for adequacy (approximately 1.5 times the gross vehicle weight of truck being towed). 4. Determine that towing vehicle has adequate capacity to both move and stop the towed truck under all conditions.