M25 Tank Transporter

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M25 Tank Transporter
M26 tractor.
Place of origin  United States
Service history
In service 1941-1955
Wars World War II
Production history
Designer Knuckey Truck Company
Manufacturer Pacific Car & Foundry Co.
Variants M26, M26A1, M26A2
Weight M26 48,895 lb (22,178 kg)
M15 42,370 lb (19,220 kg)
Length M26 306 in (777 cm)
M15 461 in (1,171 cm)
Width M26 130 12 in (331 cm)
M15 150 in (381 cm)
Height M26 123 in (312 cm)
Crew 7

Armor front 3/4 inch
sides, rear 1/4 inch
.50 cal M2 machine gun
Engine Hall-Scott 440 gasoline
1,090 cu in (17.9 L) I6
240 hp (180 kW)
Suspension 6x6
400 km
Speed 26 mph (42 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).[1] 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.[1]

Unusually, the tractor unit was fitted with both an armored cab and two winches with a combined pull of 60 tons.[1] 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[1]



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 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. 
  • War Department Technical Manuals (Reprints by Portrayal Press, P.O. Box 1190, Andover, NJ 07821)
  • TM 9-767 (40 Ton Tank Transporter/Truck-Trailer M25)
  • TM 9-1767B (Power Train for Tractor Truck M26, Component of 40-Ton Tank Transporter Trailer, Truck M25)
  • TM 9-1767C (Body/Chassis/Winches for Tractor Truck M26, Component of 40-Ton Tank Transporter Trailer Truck M25)
  • SNL G160
  • TM 9-2800 Military vehicles 1947
  • Crismon, Fred W (2001). US Military Wheeled Vehicles (3 ed.). Victory WWII Pub. pp. 383–384. ISBN 0-970056-71-0. 
  • Doyle, David (2003). Standard catalog of U.S. Military Vehicles. Kraus Publications. pp. 232–240, 283–288. ISBN 0-87349-508-X. 

Further reading[edit]

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

External links[edit]