OM3070 Operation - Section 30 Operating Instructions Page 30-11 To Lower The Dump Body: (When dumping over a berm or into a crusher): To Lower The Dump Body (When dumping on flat ground): 7. Move the hoist lever forward to the DOWN posi- tion and release. Releasing the lever places the hoist control valve in the FLOAT position, allow- ing the body to return to the frame. 8. It is very likely when dumping on flat ground that the dumped material will prevent the body from lowering. In this instance, the truck will have to be driven forward a short distance (just enough to cle ar the material) before the body can be lowered. a.
Shift the selector switch to FORWARD, release the brake lock, and depress the override button. Drive forward enough for the body to clear the material. Stop, shift the selector switch to NEUTRAL, and apply the brake lock. DO NOT drive forward in the fully raised position if the dump body will not clear an obstacle, such as a crusher wall. DO NOT move t he truck with a raised dump body raised except in an emergency. Failure to lower the body before moving the truck may cause damage to the hoist cylinders, frame, and/ or body hinge pins. b. Move the hoist lever forward to the DOWN position and release.
Releasing the lever places the hoist control valve in the FLOAT position, allowing the body to return to the frame. NOTE: If the dumped material builds up at the rear of the truck and the body cannot be lowered, perform the following steps: NOTE: If the dumped material builds up at the rear of the body and the body cannot be lowered, then perform steps c and d below: a. Move the hoist lever back to the HOIST posi- tion and fully raise the dump body. Continue to hold the hoist lever until the body is com- pletely raised. c. Move the hoist lever back to the HOIST posi- tion to fully raise the dump body. Then release the hoist lever so it returns to the HOLD position. NOTE:
If the body is not completely raised, it may lower very rapidly when the truck is moved forward and the material is cleared from the rear of the truck. d. Shift the selector switch to forward, release the brake lock, and depress the override but- ton. Drive forward to clear the material. Stop, shift the selector switch to NEUTRAL, and apply the brake lock b. Once the body is fully raised, release the hoist lever (it will return to the HOLD posi- tion). c. Shift the selector switch to FORWARD, release the brake lock, and press the over- ride button. e. Lower the body again. NOTE:
Failure to hoist the body, after making an unsuccessful attempt at lowering the body, may result in the dump body suddenly lowering after the truck has pulled ahead of the material that was previously preventing the body from lowering. d. Slowly drive forward to clear the material. e. Once the material is cleared, stop the truck, place the selector switch in NEUTRAL, and apply the brake lock. f. Completely lower the body. NOTE: Failure to hoist the body, after making an unsuccessful attempt at lowering the body, may result in the dump body suddenly lowering after the truck has pulled ahead of the material that was previously preventing the body from lowering.
DO NOT move t he truck with a raised dump body raised except in an emergency. Fail- ure to lower the body before moving the truck may cause damage to the hoist cylinders, frame, and/or body hinge pins. 10. With the body returned to the frame, move the selector switch to FORWARD, release the brake lock, and exit the dump area carefully.