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.

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4 Jul 1942 US Eighth Air Force flies its first mission in Europe using six borrowed British planes; only three aircraft returned.
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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.