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