Operation - Section 3 OM3020.1 12/99 Page 3-4 Operating Instructions 25. As you move in front of the radiator, inspect for any debris that might be stuck in front of the radiator and remove it. Check for any coolant leaks. Inspect all head and fog lights. 26. Before climbing ladder to first level, be sure ground level engine shutdown switch is “ON”. Inspect fire control actuator to be sure safety pin is in place and plastic tie that prevents accidental actuation is in place and in good condition. Be sure battery disconnect switches are “ON”. Always use grab rails and ladder when mounting or dismounting from the truck.
Clean ladder and hand rails of any foreign material, such as ice, snow, oil or mud. Always mount and dismount ladders facing the truck. Never attempt to mount or dismount while the truck is in motion. 27. Use stairs and handrails while climbing from first level to cab deck. 28. When checking coolant in radiator, use coolant level sight gauge (if equipped) or observe coolant level through opening in end of hood. If it is necessary to remove radiator cap, shut down engine (if running), and relieve coolant pressure SLOWLY, before removing radiator cap. 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. 29. Inspect covers over retarding grids to be sure latches are in place and secure. Inspect main air inlet to be sure it is clear. Be sure all cabinet door latches are secure. 30. 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. 31. Clean cab windows and mirrors; clean out cab floor as necessary. Insure steering wheel, controls and pedals are free of any oil, grease or mud. 32. Stow personal gear in 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 supplies in cab of truck or on the deck. 33. Adjust seat and steering wheel so that it is comfortable for use. 34. Read and understand the OPERATOR CONTROLS AND INSTRUMENT PANEL discussion in this section. Be familiar with all control locations and functions BEFORE operating truck. ENGINE START-UP SAFETY PRACTICES 1. Insure all personnel are clear of truck before starting engine. Always sound the horn as a warning before actuating any operational controls. If the truck is in an enclosure, insure adequate ventilation before start-up. Exhaust fumes are dangerous! 2.
Be sure parking brake switch is in “On” position. Check and insure Selector Switch is in “ N eutral” before starting. Place REST switch in “On” position (put drive system in “REST” mode of operation). Refer to discussion of REST SWITCH (26, Figure 3-6), in “Instrument Panel & Indicator Switches” section. 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 .