A supplemental agreement added a further 1,449 vehicles (plus an option for 363 vehicles) to the second HEMTT contract in April 1989 the contract option was exercised. This contract called for a base quantity of 1,403 vehicles, with options for an additional 1,684 vehicles all contract options were exercised. The second HEMTT contract was awarded to Oshkosh Truck Corporation in April 1987. The bulk of these options were exercised. Contract options allowed for up to an additional 5,351 HEMTTs to be ordered, bringing production totals to 7,490 vehicles. Over five contract years, 2,140 vehicles were to be delivered. The first prototype HEMTT was completed in December 1981, pre-production examples followed during March 1982, with the first production vehicles produced in September 1982. Army Tank-Automotive Command awarded an initial five-year contract valued at US$251.13 million to Oshkosh Truck Corporation for production of the 10-short-ton (9,100 kg) 8×8 Heavy Expanded Mobility Tactical Truck (HEMTT). 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.įollowing the evaluation of proposals submitted by AM General, MAN, Pacific Car & Foundry ( PACCAR) and Oshkosh Truck Corporation (with PACCAR– GMC team being the apparent leader of the competition, with pre-production assembly line already established) in May 1981, the then U.S. Army's 8×8 HEMTT and 10×10 Palletized Load System (PLS). The 10×10 Logistic Vehicle System Replacement (LVSR) is the United States Marines Corps' (USMC) equivalent to the U.S. 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. 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. The Heavy Expanded Mobility Tactical Truck ( HEMTT) is an eight-wheel drive, diesel-powered, 10-short-ton (9,100 kg) tactical truck. Holland ADS-240 air (front) Holland AD-246 air (rear) Army Long Term Armor Strategy (LTAS) compliantĬaterpillar (CAT) C15, 15.2-liter, 6-cylinder inline water-cooled EPA 2004 compliant dieselĪllison 4500SP 5-speed automatic with Oshkosh enhanced 55,000-pound (25,000 kg) 2 speed transfer case THAAD Missile Transporter erector launcher. M1977A0/A2/A4 Common Bridge Transport (CBT).
M985A0/A2/A4 Guided Missile Transporter cargo truck (GMT). M983A2/A4 Light Equipment Transport tractor (LET).
M977A0/A2/A4 Electrical Power Plant cargo truck (EPP) HEMTT M1120A4 in A-kit configuration-without cab armor, the B-kit
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