Loading And Unloading A Dump Trailer Door Hold Back Latch Open the battery box. On a tongue mounted battery box, support lid with prop rod. Locate the dump body controller. While using the dump body controller, position yourself in a safe location clear of the dump body. Check for overhead power lines and other obstructions before raising dump body. 104 ! DANGER A lowering or falling dump body can result in death or serious injury. NEVER enter the area under the dump body unless the empty dump body is supported by the body prop. ! WARNING Risk of electrocution. Dump body coming near or contacting power lines may result in electrocution. Electrocution can occur without contact. Be sure there are no overhead power lines over or near the trailer before raising dump body.
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