Operation - Section 30 OM3070 Page 30-10 Operating Instructions 11. When the maximum truck speed is reached, haul trucks equipped with Statex III w/fuel enhancement (fuel saver) system will experi- ence a decrease in engine rpm. To Raise The Dump Body: NOTE: This is different from trucks equipped with Statex II or Statex III without fuel enhancement, which increase rpm upon reaching the speed limit. Dumping certain types of material can result in sudden and violent movement of the truck. This truck movement may cause injury to the opera- tor. It may also cause damage to the hoist cylin- ders, frame, and/or body hinge pins.
Use caution when dumping large rocks (10% of payload, or greater) to prevent the load from shifting too quickly. Sticky material (loads that do not flow freely from the body) may also cause sudden truck movement if the load releases quickly. PASSING 1. DO NOT pass another truck on a hill or blind curve! 2. Before passing, ensure the road ahead is clear. If a disabled truck is blocking your lane, slow down and pass with extreme caution. 4. Move the lever to the HOIST position. Refer to Fig. 30-2. Releasing the lever while in the HOIST position will cause the lever to move to the HOLD position. 3. Use only the areas designated for passing. DUMPING 5.
Raise the engine rpm to accelerate the hoist speed. 1. Approach the dump area with extreme caution. Ensure the area is clear of persons and obstructions, including overhead utility lines. Obey signals directed by the spotter, if present. Avoid unstable areas. Stay a safe distance from the edge of the dump area. Position the truck on a solid, level surface before dumping. If dumping very large rocks or sticky material, as described in the warning, slowly accelerate the engine rpm to raise the body. When the material starts to move, release the hoist lever to the HOLD position. If the material does not continue to exit the body, repeat this procedure as necessary.
As the body raises, the truck center of gravity will move. The truck must be on a level surface to prevent tipping/rolling! Reduce the engine rpm as the last stage of the hoist cylinder begins to extend. Let the engine go to low idle as the last stage reaches half-extension. 2. Carefully maneuver the truck into the dump posi- tion. When backing the truck into the dump posi- tion, use only the brake pedal to stop and hold the truck. DO NOT rely on the wheel brake lock to stop the truck. This control is unmodulated and applies the rear service brakes only. 3. When the truck is stopped and in the dump position, apply the wheel brake lock. Move the selector switch to the NEUTRAL position. NOTE:
As soon as the dump body is raised, reverse travel is restricted. Reverse travel will only continue once the body has been lowered AND the direction control handle is taken out of reverse and put back in. 6. Release the hoist lever as the last stage of the hoist cylinder reaches full extension. FIGURE 30-2. HOIST LEVER POSITIONS