Abstract: A self-propelled, side loading vehicle comprises a chassis supported on front and rear pairs of wheels and having three box-shaped sections separated by two transversely elongate clear ways extending from one side of the chassis to a rigid frame along a side of the chassis opposite the one side. Three mast members are received on guide tracks mounted on the chassis and have means for independent transverse movement within the two clear ways and along one end of the chassis, each mast member comprising upper and lower telescopic sections and a fluid cylinder for raising and lowering the upper section. A load-bearing assembly is supported by the upper section of each mast member and comprises an outwardly extending bracket connected to a roller chain, the chain extending about a powered sprocket for raising and lowering the bracket connected to the chain. The bracket has a transversely extending, horizontal roller for supporting a load.