Operating Instructions - Section 30 03/13 OM3040 Page 30-4 27. Checking the coolant in the radiator using the coolant level sight gauge. 2. Ensure the transmission range selector is in NEUTRAL and the parking brake is applied before starting. 3. Do not attempt to start the engine while the cold weather starting heater (if equipped) is operat- ing. Damage to coolant heaters will result due to lack of circulation. If the engine has been running, allow the coolant to cool before removing the fill cap or draining the radiator. Serious burns may be acquired if you come in contact with hot coolant. Always depress the pressure relief before removing the cap. 4.
The key switch is a three position (OFF, RUN, START) switch. When the key slot is in the verti- cal position, the electrical system is OFF and no electrical devices are energized. 28. Inspect the battery box cover for damage. Ensure the cover is secured, tightly. Use this key position to stop the engine when it is operating. 29. Check the air cleaner indicators. If the red area is showing in the indicator, the air filter must be cleaned/replaced before operating the truck. When the switch is rotated one position clockwise, it is in the RUN position and all electrical circuits (except START) are energized. 30. Clean the cab windows and mirrors. Clean the cab floor as necessary.
Ensure the steering wheel, controls and pedals are free of any oil, grease or mud. With the transmission selector lever in NEUTRAL and the parking brake applied, rotate the key switch fully clockwise to the START position, and hold this position until the engine starts (see NOTE below). The START position is spring loaded to return to RUN when the key is released. 31. Stow personal gear in the cab so that it does not interfere with any operation of the truck. Dirt or trash buildup, specifically in the operator's cab, should be cleared. Do not carry tools or sup- plies in the cab or on the deck. 32. Adjust the seat and steering wheel so that it is comfortable for use. 33.
Read and understand Operator Controls and Instrument Panel. Become familiar with all con- trol locations and functions before operating the truck. NOTE: The engine is equipped with an oil prelube system. A noticeable time delay will occur (while engine lube oil passages are being filled) before cranking motor engagement and engine cranking will begin. The colder the engine oil temperature, the longer the time delay will be. In addition, if the truck is also equipped with an engine starting aid for cold weather starting, the engine prelube system should be engaged, first for 5-10 seconds, or until the cranking motor is engaged, before activating the engine starting aid.
ENGINE START-UP SAFETY PRACTICES Safety rules must be observed upon engine start-up. Ensure there is adequate ventilation before start- up if the truck is in an enclosure. Exhaust fumes are dangerous! 1. Ensure all personnel are clear of the truck before starting the engine. Always sound the horn as a warning before actuating operational controls. Starting fluid is extremely volatile and flammable! Use with extreme care.