Abstract: A load-carrying attachment for a vehicle to unload cargo from or load cargo onto the vehicle. The attachment includes a pair of spaced horizontal support beam assemblies having first and second ends. A cross beam connects the first ends of the beam assemblies to form a fixed frame with the beam assemblies. The cross beam is attachable to the vehicle such that the assembly is movable along the periphery of the vehicle. The attachment includes a pair of leg members, one of the leg members being attached to one of the support beam assemblies. The leg members include hydraulic cylinders for raising and lowering the support beam assemblies and wheel assemblies which can be employed as wheels when moving the attachment or as bases when the attachment is being employed to load or unload cargo. The attachment further includes a mast which is slidably attached to the beam assemblies such that it is movable along the beam assemblies. The mast is positioned between the beam assemblies.