Operating Instructions - Section 30 OM3044 Page 30-4 27. Observe coolant level through opening in end of hood. When checking coolant in radiator, relieve pressure slowly before removing radiator cap. 1. Insure all personnel are clear of truck before start- ing engine. Always sound the horn as a warning before actuating any operational controls. 2. Check and insure Selector Switch is in NEUTRAL position and the park brake switch is in the ON position before starting. If engine has been running, allow coolant to cool, before removing the fill cap or draining radiator. Serious burns may result if coolant is not allowed to cool. 3.
If truck is equipped with auxiliary cold weather heater system(s); DO NOT attempt to start engine while heaters are in operation. DAMAGE TO COOLANT HEATERS WILL RESULT! 28. Be sure battery disconnect switches are on. Inspect covers over retarding grids to be sure latches are in place and secure. Be sure battery box hold down wing nuts are in place and secure. Inspect main air inlet to be sure it is clear. Be sure all cabinet door latches are secure. 4. The keyswitch is a three position (OFF, RUN, START) switch. When switch is rotated one posi- tion clockwise, it is in the RUN position and all electrical circuits (except START) are activated.
With Selector Switch in NEUTRAL, rotate key- switch fully clockwise to START position and hold this position until engine starts. START position is spring loaded to return to RUN when key is released. If the truck is equipped with a Komatsu engine, a time delay will occur before starter engagement and engine cranking begins. The Komatsu engine is equipped with a Prelub™ Sys- tem that circulates engine oil throughout the engine prior to startup. The colder the engine oil, the longer the delay before cranking begins.
In addition, if the engine is equipped with the Engine Starting Aid for cold weather starting, the Engine Prelub™ System should be engaged FIRST for 5 to 10 seconds, or until the starters are engaged, BEFORE activating the Engine Starting Aid. 29. Move on around the cab to the back, open the doors to the brake cabinet, inspect for leaks. Before latching doors, turn work lights OFF, if used. 30. Clean cab windows and mirrors; clean out cab floor as necessary. Insure steering wheel, con- trols and pedals are free of any oil, grease or mud. 31. Stow personal gear in cab so that it does not inter- fere with any operation of the truck.
Dirt or trash build-up, specifically in the operator's cab, should be cleared. Do not carry tools or supplies in cab of truck or on the deck. 32. Adjust seat and steering wheel so that it is com- fortable for use. 33. If the truck is in an enclosure, insure adequate ventilation before start-up. Exhaust fumes are dangerous! Starting fluid is extremely volatile and flammable! Use with extreme care. If truck is equipped with optional Engine Starting Aid and ambient temperature is below 50°F (10°C), turn the keyswitch to the START position, and while crank- ing engine, move the Engine Starting Aid switch to the ON position for three (3) seconds MAXIMUM ; then release Engine Starting Aid.
If engine does not start, wait at least fifteen (15) seconds before repeating the procedure. Do not crank an electric starter for more than 30 seconds. Allow two minutes for cooling before attempting to start engine again. Severe damage to starter motor can result from overheating. ENGINE START-UP SAFETY PRACTICES NEVER ATTEMPT TO START THE ENGINE BY SHORTING ACROSS THE STARTER TERMINALS. This may cause fire, or serious injury or death to anyone in machine’s path. START THE ENGINE FROM THE OPERATOR’S SEAT ONLY.