M25 Tank Transporter

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M25 Tank Transporter
M26 tractor.
Type 40 ton (36,287kg) 6x6 Tank recovery truck-trailer
Place of origin  United States
Service history
In service 1941-1955
Wars World War II
Production history
Designer Knuckey Truck Company
Manufacturer M26: Pacific Car & Foundry Co.
M15: Fruehauf Trailer Co.
Variants M26A1, M26A2
Specifications (M25[2])

M26: 48,000 lb (22,000 kg)
M15: 36,600 lb (16,600 kg)
M25: 84,300 lb (38,200 kg)
M26: 103,000 lb (47,000 kg)
M15: 36,600 lb (16,600 kg)

M25: 164,300 lb (74,500 kg)
Length M26: 25 feet 4 inches (7.72 m)
M15: 38 feet 5 116 inches (11.71 m)
Width M26: 10 feet 10 34 inches (3.32 m)
M15 12 feet 6 inches (3,810 mm)
Height M26: 11 feet 5 inches (3.48 m)
Crew 7

Armor front 34 in (19 mm)
sides, rear 14 in (6.4 mm)
.50 cal M2 machine gun
Engine Hall-Scott 440 gasoline
240 hp (180 kW)
120 mi (193.1 km)
Speed 28 mph (45 km/h)

The M25 Tank Transporter was a heavy tank transporter and tank recovery vehicle used in World War II and beyond by the US Army.

Nicknamed the Dragon Wagon, the M25 was composed of a 6x6 armored tractor (M26) and 40-ton trailer (M15).


In 1942 a new 40 ton semi-trailer tank transporter was required. This was to offer better off-road performance than the M9 24-small-wheel trailer, and greater capacity than the 30 ton 8-large-wheel Shelvoke and Drewry semi-trailers, then in use with the Diamond T tractor unit. This new trailer was designed by the Fruehauf Trailer Company (based in Detroit, MI).[3] A new tractor unit was required, as this heavier trailer was more than the Diamond T could cope with.

The M26 tractor was designed by the San Francisco-based Knuckey Truck Company. When Knuckey's production capacity proved insufficient the Army awarded production to the Pacific Car & Foundry Co. of Seattle, Washington.

Designated TR-1 by Pacific Car, the 12-ton 6x6 M26 tractor was powered by a Hall-Scott 440 1,090 cu in (17.9 L) 6-cylinder gasoline engine developing 240 hp (180 kW) at 2000 rpm and 810 lbf·ft (1,098 N·m) at 1200 rpm. This engine was developed exclusively for the M26, although it was also used to uprate the Diamond T. Some 2,100 Type 440s were built. Baxter notes "over 1,300" M26 and M26A1 being built.[3]

Unusually, the tractor unit was fitted with both an armored cab and two winches with a combined pull of 60 tons.[3] The intention was that as well as hauling the tank transporter semi-trailer, the tractor unit could itself be used for battlefield light recovery work.

A later unarmored version of the M26 tractor was designated the M26A1. An experimental ballast tractor conversion was experimented with by the British FVPE[3]



The M26 entered service with the US Army in Europe in 1944-45, and was replaced by the 10 ton 6x6 M123 semi-tractor from 1955.

U.S. Nomenclature[edit]

In the nomenclature system used by the U.S Army Ordnance Corps Supply Catalog this vehicle is referred as the G160.


  • Crew-7
  • Armament 1-.50 cal. machine gun
  • Armor, front-3/4", sides, rear, 1/4".
  • top speed-26 MPH
  • fuel cap, 120 GAL.


See also[edit]



  1. ^ a b "TM-9-2800-1 Standard Military Motor Vehicles". US War Dept. 1 Sep 1943. Retrieved 27 May 2014. 
  2. ^ "TM-9-767 40 ton Tank Transporter Truck-trailer M25". US War Dept. 13 Aug 1942. pp. 14–15. Retrieved 20 Dec 2014. 
  3. ^ a b c d e Baxter, Brian S. (1989). Breakdown: A History of Recovery Vehicles in the British Army. HMSO, for REME Museum. p. 51. ISBN 0-11-290456-4. 

Further reading[edit]

  • Military Vehicle Journal #8 (Photos of the M26 and M26A1)

External links[edit]