Operation - Section 3 OM3017.2 Page 3-14 Operator Cab and Controls CAB AIR FILTER GROUND LEVEL SHUTDOWN Service The Ground Level Shutdown switch is located on front left side of truck below the ladder light switch near base of ladder. The switch is a spring return push button switch connected to the engine shutdown solenoid. When Ground Level Shutdown switch is depressed, solenoid is energized shutting off fuel to the engine. Inlet filters in the heater cover and the cab access panel need periodic cleaning to prevent restrictions in air circulation.
The recommended interval for cleaning and inspection is 250 hours, but in extremely dusty conditions, the filters may need daily service and in- spection, especially the outer panel filter on the cab shell. Replace the filter element every 1000 hours or sooner if inspection indicates a damaged filter. The Ground Level Shutdown button must be de- pressed and held until engine comes to a complete stop. LADDER LIGHT Ground Level Shutdown for "DDEC" Electronic-Controlled Engine Option A light to illuminate the boarding ladder is mounted near the upper left side of the grille structure. Two switches control this light.
One is mounted at the base of the ladder and one is in the operator’s cab on the instrument panel. The Ground Level Shutdown switch is located on the left side of the truck on the up-right near the ladder. The switch is a two position rotary switch. To shut down engine, turn the switch to the "OFF" position. NOTE: Switch must be turned "ON" before the engine can be started.