M984 Heavy Expanded Mobility Tactical Track Wrecker
- Weight: 50,900 lbs.
- Engine: Allison Model 8V92TA 8-cylinder
- Displacement: 736 cu. in.
- Horsepower: 450 @ 2,100 rpm
- Fuel: Diesel
- Maximum speed: 57 mph
- Maximum range: 300 miles
The Heavy Expanded Mobility Tactical Truck (HEMTT) series is a range of eight-wheel drive diesel-powered off-road capable trucks, used by the US military. Formally described as "Truck, Cargo: 10-Ton, 8×8", it has been nicknamed the "Dragon Wagon." HEMTT trucks first went into service with the U.S. Army in 1982, as a replacement for the M520 Goer. It is distinguished by extreme mobility compared to standard 5-ton trucks, thanks to its large number of wheels and turbo-charged engine, combined with all-wheel drive and very large, low-pressure tires.
The M984 wrecker uses a lift-and-tow system to recover disabled vehicles in two-to-three minutes. The vehicle’s material handling crane has a 10,000-lb load capacity at 12 ft or 24,000-lb with boom extension retracted and resting on boom support tubes, 60,000-lb recovery winch, and 10-foot cargo body.