Oshkosh M1070

Oshkosh M1070 heavy equipment transporter
Oshkosh M1070A0 tractor, M1000 semi-trailer and M88 ARV payload
Type	8×8 heavy tractor
Place of origin	United States
Service history
Used by	U.S. Army and others (see Operators).
Production history
Designer	Oshkosh Corporation
Manufacturer	Oshkosh Corporation
Produced	1992–present
Variants	M1070A0, M1070A1
Specifications
Weight	Unladen (tractor) 18598 kg / 20657 kg. Fifth wheel load (at GCW) 20411 kg / 20884 kg. GCWR 104961 kg / 108461
Length	9.093 m / 9.677 m
Width	2.591 m / 2.591 m
Height	3.962 m / 3.708 m
Crew	2 operators (driver + 1) + 4 additional spaces (4 seats or 2 bunks)
Armor	Protection levels classified; 796 add-on kits delivered for M1070A0 by BAE Systems; M1070A1 is a-kit/b-kit; U.S. Army Long Term Armor Strategy (LTAS) compliant
Engine	Detroit Diesel Model 8V-92TA DDEC II, 12.06-litre diesel developing 500 hp at 2100 rpm and 1993 Nm torque at 1200 rpm / CAT C-18 18.01-litre turbocharged and intercooled 4-stroke diesel developing 700 hp at 2100 rpm
Transmission	Allison CLT-754 5-speed automatic, TC-496 torque converter and Oshkosh 55000 2-speed transfer case / Allison 4800SP 7-speed, TC-496 torque converter and Oshkosh 30000 single-speed transfer case
Suspension	The front Rockwell / AxleTech 5000 Series steer-drive axle is sprung by Hendrickson parabolic taper leaf springs. The rear Rockwell / AxleTech 5000 Series tridem unit is sprung by Hendrickson-Turner air suspension
Fuel capacity	947 litres / 947 litres (568 (L) & 379 (R))
Operational range	724 km / 523 km @ GCWR and an average 48 km/h
Speed	72 km/h (primary road at GCW) / 81 km/h (primary road at GCW)
Steering system	power-assisted with front and rear axle co-ordinated steer; twin pump (main and auxiliary)

The Oshkosh M1070, in A0 and A1 configurations, is the U.S. Army's current tank transporter tractor. In service the M1070 is coupled to a DRS Technologies M1000 semi-trailer. The primary purpose of this combination is the transport of the M1 Abrams tank.

It is also used to transport, deploy, and evacuate armoured personnel carriers, self-propelled artillery, armored bulldozers and other heavy vehicles and equipment of all types.

This combination replaced the earlier Oshkosh-built M911 tractor unit and M747 semi-trailer.

Export sales of A0 and A1 variants have been made, and derivatives of the M1070 have been produced or are available, these including the M1070F and the Global HET.

To meet a U.S. Army requirement for the transport of the M1 Abrams main battle tank (MBT) Oshkosh Truck Corporation (now Oshkosh Defense) proposed the M1070. A contract for 1044 M1070 was placed, with production commencing in July 1992. The contract included an option for 522 additional units.

The final U.S. Army contract for the original A0 version called for 195 vehicles. These were delivered between March 2001 and March 2003. U.S. Army deliveries of A0 versions totalled 2,488. In total, and including export orders, just under 2,900 M1070A0 were manufactured by Oshkosh.

Following an initial two separate contracts awarded in 2004, Oshkosh Truck overhauled service-worn M1070s. Reset to original build standard and with zero miles/zero hours and a full one-year warranty, cost to the U.S. Department of Defense per vehicle was about 75% of that of new build vehicles. In total, 1,009 A0 HETs were Reset and returned to service.