OM3023 10/00 Operation - Section 3 Operating Instructions Page 3-13 TOWING Prior to towing a truck, many factors must be care- fully considered. Serious personal injury and/or sig- nificant property damage may result if important safety practices, procedures and preparation for moving heavy equipment are not observed. 3. If the engine is NOT operable, never haul the truck over 800m (2,625 ft.). If the towing distance surpasses that limit, be sure to remove the drive shaft between the transmission and the differential case (if final drive sun gears have not been removed). The towing speed must not be greater than 8 km/h (5 mph). 4.
Inspect tow bar for capacity (it should be strong enough to tow 1.5 times the gross vehicle weight of truck being towed). Both right and left planetary sun gears/drive axles should be removed before any towing. Refer to Section "G" in the Service Manual for these instructions. Extensive secondary damage can occur to final drive components and/or trans- mission, if truck is towed without first removing sun gears/drive axles. 5. Determine that towing vehicle has adequate capacity to both move and stop the towed truck under all conditions. 6. Protect both operators in the event of tow bar failure. 7. Release disabled truck brakes and remove all blocking.
Do not tow the truck any faster than 8 kph (5 MPH). 8. Sudden movement may cause tow bar failure. Smooth and gradual truck movement is pre- ferred. The truck must not be towed except in emergen- cies. 9. Minimize tow angle at all times - NEVER EXCEED 30°. The towed truck must be steered in the direction of the tow bar. When towing becomes necessary, use the tow hook installed under the front frame and take the following precautions: 1. Block disabled truck to prevent movement while attaching tow bar. 2. If the engine is operable; keep the engine run- ning while towing the machine, so that the steering and braking can be used.
If there is a failure in the air circuit, the brakes cannot be used, so be extremely careful when towing. When air pressure in air reservoir abnormally drops due to leakage from air cir- cuit, parking brake and emergency brake are actuated. When towing truck, both brakes must be released. Refer to "BRAKE RELEASE" fol- lowing these" TOWING" instructions. If the engine is NOT operable, it is possible to steer using the emergency steering, but do not use it for more than 90 seconds, and travel at a speed of less than 5 km/h (3 mph).