Operator Cab And Controls - Section 32 8/11 OM3232 Page 32-6 Override/Fault Reset Switch This push-button switch (3, Figure 32-3) is spring- loaded to the OFF position. When pushed in and held, this switch may be used for several functions. L.H. Window Control Switch R.H. Window Control Switch Control switches (5) and (6, Figure 32-3) are spring- loaded to the OFF position. Pushing the top of the switch raises the left hand or right hand cab window. Pushing the bottom of the switch lowers the window.
The switch permits the operator to override the body-up limit switch and move the truck forward when the directional control lever is in FORWARD, the dump body is raised, and the brakes are released. Use of the override switch for this purpose is intended for emergency situations only! Hoist Control Lever Hoist control (7, Figure 32-3) is a four position hand- operated lever located between the operator seat and the center console (see illustration below). The switch deactivates the retard pedal function when the truck speed is below 5 kph (3 mph) for facilitating starting the truck on a hill. The switch is used to reset an electrical system fault while the truck is stopped.
The switch is used to allow full torque in REVERSE. Standard torque in REVERSE is limited to 50%. If a ground fault occurs, holding down the switch allows the operator to drive the truck for less than two minutes to a safe stop. Raising The Dump Body 1. Pull the lever to the rear to actuate hoist circuit. Releasing the lever anywhere during "hoist up" will place the body in HOLD at that position. Engine Shutdown Switch Engine shutdown switch (4, Figure 32-3) is used for engine shutdown. Pull the switch up to stop the engine. Push the switch back down to enable engine operation. 2. Raise engine rpm to increase hoist speed. 3.
Reduce engine rpm as the last stage of the hoist cylinders begin to extend and then let the engine go to low idle as the last stage reaches half-extension. 4. Release hoist lever as the last stage reaches full extension. SWITCH UP ENGINE OFF SWITCH DOWN ENGINE ON 5. After material being dumped clears the body, lower the body to frame. Refer to Section 30, Operating Instructions - Dumping, for more complete details concerning this control. Use this switch ONLY in an emergency situation to shutdown the engine, or if the key switch should fail to operate. Lowering The Dump Body Move the hoist lever forward to the DOWN position and release.
Releasing the lever places hoist control valve in the FLOAT position, allowing the body to return to the frame. However, it can also be used for Emergency Steering Check, or during diagnostic testing to stop the engine without turning off the 24 VDC electrical circuits and without bleeding down the accumulators. A ground level engine shutdown switch is also located at the right front corner of the truck near the reserve oil tank or at the left front corner of the truck near the automatic lubrication pump, depending on the diagonal ladder configuration.