Patent ID: 7934897

Claim:
A method for interchanging a dump body and trailer body on a truck, including the steps of: lifting the dump body with a hydraulic cylinder; attaching a hoist system to the dump body; lifting the dump body with the hoist system whereby at least part of a weight of the hydraulic cylinder bearing on the truck is removed; removing remaining weight of the hydraulic cylinder bearing on the truck such that a mechanical coupling that pivotally attaches together the hydraulic cylinder and truck can be removed; removing the mechanical coupling; detaching the hydraulic cylinder from the truck; lifting the dump body with the hoist system whereby at least part of the weight of the dump body bearing on a coupling pin is removed; removing the coupling pin from the dump body and the truck whereby the dump body is no longer pivotally attached to the truck; removing the dump body from the truck; positioning a 5 th wheel onto mounting brackets; releaseably attaching the 5 th wheel to the mounting brackets; and coupling the trailer body to the 5 th wheel whereby the dump trailer body is attached to the truck.