Allison 4500SP 5-speed automatic with Oshkosh enhanced 55,000-pound (25,000 kg) 2 speed transfer case
Suspension
Holland ADS-240 air (front); Holland AD-246 air (rear)
Fuel capacity
155 US gal (587 L)
Operational range
300 mi (483 km) loaded
Maximum speed
62 mph (100 km/h)
Steering system
power-assisted on front tandem
The Heavy Expanded Mobility Tactical Truck (HEMTT) is an eight-wheel drive, diesel-powered, 10-short-ton (9,100 kg) tactical truck.[2] The M977 HEMTT first entered service in 1982 with the United States Army as a replacement for the M520 Goer, and since that date has remained in production for the U.S. Army and other nations.[2][6] By Q2 2021, around 35,800 HEMTTs in various configurations had been produced by Oshkosh Defense through new-build contracts and around 14,000 of these had been re-manufactured.[3][2] Current variants have the A4 suffix.
The 10×10 Logistic Vehicle System Replacement (LVSR) is the United States Marines Corps' (USMC) equivalent to the U.S. Army's 8×8 HEMTT and 10×10 Palletized Load System (PLS). The USMC does not use the HEMTT or PLS, and the Army does not use the LVSR, but both services use a common trailer (M1076) with all three truck types.
^ ab"HEMTT Fact File for the United States Army". Army.mil. U.S. Army. Archived from the original on 11 June 2008. Retrieved 21 May 2010.
^ abcd"Oshkosh M977 Heavy Expanded Mobility Tactical Truck (HEMTT)". IHS Jane's Shaun C Connors. 1 May 2021. Retrieved 7 May 2021.
^ ab"Oshkosh M977 heavy expanded mobility tactical truck (HEMTT) and M989A1 heavy expanded mobility ammunition trailer (HEMAT)". IHS Jane's Shaun C Connors. 18 March 2019. Retrieved 17 May 2019.
^ ab"Oshkosh M977 heavy expanded mobility tactical truck (HEMTT) and M989A1 heavy expanded mobility ammunition trailer (HEMAT)". IHS Jane's Shaun C Connors & Christopher F. Foss. 14 June 2015. Retrieved 14 June 2015.
^Cite error: The named reference HEMTT A4 was invoked but never defined (see the help page).
^"HEMTT". olive-drab.com. Olive-Drab.com LLC. 22 May 2008. Archived from the original on 22 October 2007. Retrieved 22 April 2007.
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