Safety - Section 2 OM2025.2 Page 2-22 Warnings and Cautions A warning instruction is applied below the Parking Brake and the Rear Wheel Brake Lock switches, which are located to the right of the steering column on the instrument panel. Pushing the top of the rocker-style switch turns the function ON, pushing the bottom, turns it OFF. The Parking Brake is spring applied and hydraulically released. It is designed to hold a stationary truck when the engine is shutdown and keyswitch is turned “Off”. The truck must be completely stopped before applying the parking brake, or damage may occur to parking brake. To apply the parking brake, press the rocker switch toward the “On” symbol.
To release the parking brake, press the rocker switch toward the “Off”symbol. When the keyswitch is “On” and Parking Brake switch is applied, the Parking Brake indicator light (A3, Overhead Panel) will be illuminated. NOTE: Do not use the parking brake at shovel or dump. With keyswitch “on” and engine running, sudden shock caused by loading or dumping could cause the system’s motion sensor to RELEASE the park brake . The Wheel Brake Lock switch is for holding the truck while parked at the shovel during loading, or while dumping. It applies the rear service brakes only . If the brake treadle valve does not operate, apply this brake to stop the truck.
Do NOT use this brake as a parking brake when leaving the truck. With engine shut down, the hydraulic system will eventually bleed down, releasing the service brakes. Attached to the exterior of both battery compartments is a danger plate. This plate stresses the need to keep from making any sparks near the battery. When another battery or 24VDC power source is used for auxiliary power, all switches must be “Off” prior to making any connections. When connecting auxiliary power cables, posi- tively maintain correct polarity; connect the positive (+ ) posts together and then connect the negative (-) lead of the auxiliary power cable to a good frame ground.
Do not connect to the negative posts of the truck battery or near the battery box. This hookup completes the circuit but minimizes danger of sparks near the batteries. Sulfuric acid is corrosive and toxic. Use proper safety gear, gog- gles, rubber gloves and rubber apron when handling and servicing batteries. Get proper medical help immediately, if required. This plate is placed on both battery boxes and near the battery disconnect switches to indicate that the battery system (24VDC) is a NEGATIVE (-) GROUND system. These decals are placed above the battery disconnect switches on the right side of the front bumper to indi- cate “Off” and “On” positions of the switches.