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M-26 Heavy Transporter
The M-26 Heavy Transporter Truck & M-15 semitrailer were standardized together in June 1943 as a retriever for the M-4 Sherman medium tank. The tractor-trailer combination was originally designated as the M-25 but the nomenclature was changed in late 1944 to separately designate the tractor as the M-26 and the trailer as the M-15.
The combination of the M-26 Heavy Transporter Truck & M-15 Trailer was called the "Dragon Wagon" by the troops, a designation that was also used for other vehicles at other times.
During World War II, there were nine of these transporters in the Ordnance Maintenance Battalion of each armored division. The M-26 Heavy Transporter & M-15 Semi-Trailer remained in U.S. Army inventory through the 1950s and 1960s. It was gradually replaced by the M-123 Truck, Tractor, 10-Ton, 6x6 in the late 1950s and by the M-911 Commercial Heavy Equipment Transporter (C-HET), starting in 1977.
M-26 Heavy Transporter 6x6 Tractor (G-160) & M-15 Semi-Trailer
The M-26 Heavy Transporter 6x6 Tractor had a fully armored cab that included hinged steel plates that could be fastened to cover the windows, allowing only slits for vision. The M-26A1 and M-26A2 had a soft top, not intended for use under fire. The tractors had a fifth wheel designed to connect to the M-15 semitrailer and had three winches. Two of the winches were 60,000 lb. units mounted behind the cab, for use in pulling a load onto the trailer. The third winch, with 35,000 lb. capacity, was front mounted, for use in self-recovery if the tractor became stuck.
The M-26 Tractor was armed with an M2 .50 cal. machine gun on a ring mount.
The M-15 semitrailer was an eight wheel flat bed that attached to the M26 fifth wheel and had rear loading ramps for loading tanks or other cargo. The rear wheels and ramps had adjustable width for loading vehicles of different sizes. The payload of the trailer was:
The M-26 Tractor units and the M-15/M-15A1 trailers were manufactured by Pacific Car & Foundry Co. of Renton, WA. The M-15A2 trailers were built by Freuhauf Trailer Co.
Find additional photos and hi-res versions of the M-26 Tractor Dragon Wagon at the Olive-Drab Military Mashup:
M26 6x6 Tractor & M15 Semi-Trailer Specifications: