Operation - Section 30 OM3070 Page 30-6 Operating Instructions NOTE: If the truck is equipped with an engine prelube system, a noticeable time delay will occur (while the engine lube oil passages are being filled) before the starter engages. The colder the engine oil temperature, the longer the time delay. In addition, if the truck is equipped with an engine starting aid for cold weather starting, the engine prelube system must be engaged for 5-10 seconds, or until the starter is engaged, before activating the engine starting aid. AFTER ENGINE HAS STARTED Do not leave the truck unattended while the engine is running.
Move the directional control lever to PARK and turn off the engine before leaving the truck. Become thoroughly familiar with the steering and emergency controls. Starting fluid is extremely volatile and flammable! Use with extreme care. 1. After the engine has started and the low pres- sure and warning systems are normal, test the truck steering in extreme right and left direc- tions. If the steering system is not operating properly, shut the engine off immediately. Deter- mine the steering system problem and repair before resuming operation.
If the truck is equipped with the optional engine start- ing aid and the ambient temperature is below 10°C (50°F), turn the key switch to the START position. While cranking the engine, move the engine starting aid switch to the ON position for three seconds maxi- mum, then release the engine starting aid. If the engine does not start, wait at least fifteen seconds before repeating the procedure. 2. Check the brakes before moving the truck. Start the engine and allow the hydraulic system to fully pressurize. Activate the service brake, parking brake, and brake lock at least twice. If a warning alarm is activated when a brake is applied or released, DO NOT operate the truck.
If the application and release of any brake appears slow or improper, DO NOT operate the truck. If a brake problem is suspected, shut the engine off and notify maintenance personnel. DO NOT crank an electric starter for more than thirty seconds. Allow two minutes for starter cooling before attempting to start the engine again. Severe damage to the starter motor can result from overheating. 3. Check the gauges, warning lights, and instru- ments before moving the truck to ensure proper system operation and proper instrument func- tioning. Observe the braking and steering circuit hydraulic warning lights. If the warning lights come on, shut the engine off immediately and determine the cause. 4.
The key switch is a four-position switch (ACC, OFF, RUN, START). The ACC position is not currently used. a. Turn the key switch one position clockwise to the RUN (except START) position. All electrical circuits (except start) are activated. 4. Make sure the headlights, work lights, and tail- lights are in proper working order. Check the operation of the windshield wipers. Good visibil- ity may help prevent an accident. b. With the selector switch in NEUTRAL, turn the key switch fully clockwise to the START position and hold this position until the engine starts. The START position is spring- loaded and will return the switch to the RUN position when the key is released. 5.
When the truck body is in the dump position, DO NOT allow anyone beneath it unless the body-up retaining cable is in place. 6. DO NOT allow unauthorized personnel to ride in the truck. DO NOT allow anyone to ride on the stairs or ladder of the truck. 7. DO NOT leave the truck unattended while the engine is on. Shut the engine off, and apply the parking brake before getting out of the cab.