As described in TM 9-2320-279-10-1, the M985 is a cargo vehicle with 68,000-lb (30 800 kg) GVWR and 100,000-lb (45 400 kg) GCWR. The vehicle is equipped with a material handling crane with 5,400-lb (2,452 kg) load capacity at 16.5 ft (5.0 m) boom radius and has an 18-foot cargo body. The M985E1 is a cargo vehicle with 58,000-lb (26,332 kg) GVWR and 100,000-lb (45,400 kg) GCWR. That vehicle is equipped with a material handling crane with 5,400-lb (2,452 kg) load capacity at 16.5 ft (5.0 m) or 4,500-lb (2,043 kg) at 20.5 ft (6.25 m). Maximum reach in knuckle position (inner boom 10° - 15° above horizontal and outer boom horizontal) is 20.5 ft (6.25 m).
The M985 HEMTT is similar to the M977 HEMTT Cargo Truck but with heavier load rating for the truck and its material handling crane.
The M985 variants have these NSNs:
M985 w/o winch NSN 2320-01-100-7673
M985 w/winch NSN 2320-01-097-0261
M985E1 w/winch NSN 2320-01-194-7032
M985E1A2 w/winch NSN 2320-01-493-3790
M985E1A2R1 w/winch NSN 2320-01-493-3792
M985A2 w/o winch NSN 2320-01-492-8201
M985A2 w/winch NSN 2320-01-492-8214
M985A2R1 w/o winch NSN 2320-01-493-3789
M985A2R1 w/winch NSN 2320-01-493-3787
M985 HEMTT Cargo Truck modified for use as a Guided Missile Transport (GMT) for Patriot missiles. The GMT can transport up to four Patriot Guided Missile Canisters.
M985 HEMTT Cargo Truck modified for use as the Electric Power Plant (EPP) for a Patriot missile battery. The M985 carries two 150-kw generator sets, a power distribution unit, cables, and accessories.
M985 HEMTT unloads Multiple Launch Rocket System (MLRS) pods from cargo truck and trailer, White Sands Missile Test Range, NM, February 1983.
M985 HEMTT loads Multiple Launch Rocket System (MLRS) pods (3rd Battalion, 6th Field Artillery, 1st Infantry Division), Ft. Bliss, TX, 9 May 1983.