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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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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:

1977 M911 Oshkosh Tractor Truck, Commercial Heavy Equipment Transporter (C-HET), Model: F2365SWA: 8x6; 85,000 lb GVWR. Powered by a Detroit Diesel 8V-92TA driving through an Allison CLBT-750 Automatic main transmission and a Fuller AT 1202 2 speed auxiliary transmission. Vehicle is equipped with 2 ea. Braden 45,000 lb-capacity two-speed hydraulic winches, and a pusher axle. Manufacturer's serial number: 17345. Courtesy: Government Liquidation LLC.
M911 C-HET tractor, manufactured in 1978.  Courtesy: Government Liquidation LLC
M911 CHET PR photo. Oshkosh
Prior to 1993, the U.S. Army employed the Commercial Heavy Equipment Transporter (C-HET), shown here with the M911 truck tractor and the M747 semitrailer carrying an M60 Main Battle Tank.
M911 CHET tractor. Courtesy: Government Liquidation LLC
M911 CHET tractor. Courtesy: Government Liquidation LLC

Specifications of the M-911 C-HET Tractor

EngineDetroit Diesel 8V92TA V8 430hp@2100
TransmissionAllison CLBT750 automatic w/hydraulic retarder and lock-up clutch, 5 fwd speeds, 1 rev
Transfer Case2 speed
BrakesDual air/mechanical
Tires14:00x24, 18 ply
Fifth Wheel64 in high, 3.5 in kingpin
Crew2
Weight (Curb)39,952 lbs
Height129 in
Width114 in
Length360 in
Towed Load106,000 lbs
Road speed44 mph max
Max Range Loaded280 mi
Fording28 inches w/o prep, hard bottom
Approach Angle28°
Departure AngleUnlimited
ManufacturerOshkosh

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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