M911 Truck, Tractor, C-HET, 8x6

The M911 Commercial, Heavy Equipment Transporter (C-HET) was based on the commercial off-the-shelf (COTS) Oshkosh F2365, modified for military requirements. The M911 was type classified in 1977. After an initial contract to Oshkosh for 747 vehicles, additional M911 C-HETs were acquired for a total of about 1200 vehicles.

M911 Truck, Tractor, C-HET, 8x6.  Photo courtesy of Oshkosh
M911 Truck, Tractor, C-HET, 8x6. Photo courtesy of Oshkosh.

Today in WW II: 5 Nov 1939 Hitler meets with von Brauchitsch, the Commander in Chief of the German Army, regarding planned offensive in the west. Plot with Halder and Beck to arrest Hitler, unless he relents on the plan, collapses.  More 
5 Nov 1940 President Franklin Roosevelt elected to an unprecedented third term.
5 Nov 1942 At Gibraltar, Gen. Dwight Eisenhower opens Allied operational HQ for the invasion of North Africa.
5 Nov 1942 British Lt. Gen. Montgomery announces complete British victory in Egypt with Rommel's Afrika Korps in full retreat.
Visit the Olive-Drab.com World War II Timeline for day-by-day events 1939-1945! See also WW2 Books.

M911 Truck, Tractor, C-HET, 8x6

The M911 C-HET full nomenclature was Truck, Tractor, Commercial, Heavy Equipment Transporter (C-HET), 85,000 GVWR, 8X6, M911 22-1/2 Ton Tractor, NSN 2320-01-025-3733. The M911 was procured as a replacement for the M123 and M746 tractors.

The M911 C-HET was mated with the 60-ton M747 Semi-Trailer for the purpose of highway transport of the M1 Main Battle Tank, the Bradley Fighting Vehicle, or other such heavy armored vehicles. The M911 is equipped with a pair of 45,000 pound Braden winches, mounted behind the cab, so the M911 is capable of retrieving and loading disabled heavy vehicles. A pneumatically powered tag axle is deployed for the heaviest loads or for operation on soft soils. The M911 C-HET was replaced by the M1070 HET, first fielded in June 1995.

Thanks to Kevin for help with this page.

M911 Truck, Tractor, C-HET, 8x6 Manuals

The manuals for the M911 C-HET are in the TM 9-2320-270 series. The two most important manuals for maintenance and operation are:

  • LO 9-2320-270-12. Truck Tractor, Commercial Heavy Equipment Transporter (C-HET), 85,000 GVWR, 8X6, M911 (NSN 2320-01-025-3733). 26 October 1990.
  • TM 9-2320-270-10. Operator's Manual for Truck, Tractor, Commercial, Heavy Equipment Transporter (C-HET), 85,000 GVWR, 8X6, M911 (NSN 2320-01-025-3733). 2 December 1983.

Find additional photos and hi-res versions of the M-911 C-HET Tractor at the Olive-Drab Military Mashup.

Specifications of the M-911 C-HET Tractor

Engine Detroit Diesel 8V92TA V8 430hp@2100
Transmission Allison CLBT750 automatic w/hydraulic retarder and lock-up clutch, 5 fwd speeds, 1 rev
Transfer Case 2 speed
Brakes Dual air/mechanical
Tires 14:00x24, 18 ply
Fifth Wheel 64 in high, 3.5 in kingpin
Crew 2
Weight (Curb) 39,952 lbs
Height 129 in
Width 114 in
Length 360 in
Towed Load 106,000 lbs
Road speed 44 mph max
Max Range Loaded 280 mi
Fording 28 inches w/o prep, hard bottom
Approach Angle 28
Departure Angle Unlimited
Manufacturer Oshkosh

M-911 C-HET Tractor Photo Gallery

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M-911 C-HET Tractor parked on the dock alongside the vehicle cargo ship SS Adm. Wm. M. Callaghan (T-AKR 1001) during Exercise Reforger '85, 1985.

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M-911 C-HET Tractor on a flatbed railroad car during Exercise Reforger '85, 1985.

M-911 C-HET Tractor.  Photo:  Government Liquidation.com
M-911 C-HET Tractor. Photo: Government Liquidation.com.

M-911 C-HET Tractor.  Photo:  Government Liquidation.com
M-911 C-HET Tractor. Photo: Government Liquidation.com.

M-911 C-HET Tractor on the highway.  Photo: Courtesy of Kevin
M-911 C-HET Tractor on the highway. Photo: Courtesy of Kevin.

M-911 C-HET Tractor.  Photo: Courtesy of Kevin.
M-911 C-HET Tractor. Photo: Courtesy of Oshkosh Equipment Sales, LLC.

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