OM3043 Operation - Section 3 Operating Instructions Page 30-9 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. SAFE PARKING PROCEDURES The operator must continue the use of safety precau- tions when preparing for parking and engine shut- down. In the event that the equipment is being worked in consecutive shifts, any questionable truck perfor- mance the operator may have noticed must be checked by maintenance personnel before the truck is released to another operator.
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. 1. The truck should be parked on level ground, if at all possible. If parking must be done on a grade, the truck should be positioned at right angles to the grade. 2. If truck is equipped, install hydraulic connec- tions for steering and dumping between towing and towed vehicles. Check towed vehicle for braking system. 1. Shut down engine. 2. The parking brake must be applied and/or chocks placed fore/aft of wheels so that the truck cannot roll. Each truck should be parked at a reasonable distance from another. 3.
Inspect tow bar for adequacy (approximately 1.5 times the gross vehicle weight of truck being towed). 3. Haul roads are not safe parking areas. In an emergency, pick the safest spot most visible to other machines in the area. If the truck becomes disabled where traffic is heavy, mark the truck with warning flags in daylight or flares at night. 4. Determine that towing vehicle has adequate capacity to both move and stop the towed truck under all conditions. 5. Protect both operators in the event of tow bar failure. 6. Block disabled truck to prevent movement while attaching tow bar. ENGINE SHUTDOWN PROCEDURE The following procedure (1. - 4.) should be followed at each engine shutdown. 7.
Release disabled truck brakes and remove blocking. 8. Sudden movement may cause tow bar failure. Smooth and gradual truck movement is pre- ferred. 1. Stop truck. Reduce engine RPM to low idle. Place Selector Switch in NEUTRAL and apply Parking Brake switch.If the Engine Shutdown with Timer Delay is preferred, refer to the DELAYED ENGINE SHUTDOWN PROCE- DURE below. 9. Minimize tow angle at all times - NEVER EXCEED 30 o . The towed truck must be steered in the direction of the tow bar. 2. Allow engine to cool gradually by running at low idle for 3 to 5 minutes. 3. With truck stopped and engine cooled down, turn keyswitch counterclockwise to OFF for nor- mal shutdown of engines.
If engine does not shutdown with keyswitch, use Engine Shutdown Switch on center console (see Operator Con- trols section) and hold this switch down until engine stops. 4. With keyswitch OFF, and engine stopped, wait at least 90 seconds. Insure steering circuit is completely bled down by turning steering wheel back and forth several times. No front wheel movement will occur when hydraulic pressure is relieved. 5. Close and lock all windows, remove key from keyswitch and lock cab to prevent possible unauthorized truck operation. Dismount truck properly.