UNITED24 - Make a charitable donation in support of Ukraine!

Military


Heavy Expanded Mobility Tactical Truck (HEMTT)

Vehicle Specifications
M977 M978 M985 M983 M984
Length: 401 in 401 in 401 in 351 in 392 in
Height: Operational 112 in; Transport 102 in - all
Width: 96 in 96 in 96 in 96 in 96 in
Wheelbase: 210 in 210 in 210 in 181 in 191 in
Turning circle: 100 in 100 in 100 in 91 in 95 in
Ground clearance: 24 in 24 in 24 in 24 in 24 in

Vehicle curb weight:

 M977 w/ winch - 38,800 lbs; w/o winch - 37,900 lbs
M978 w/ winch - 38,200 lbs; w/o winch - 37,300 lbs
M983 w/ crane - 39,200 lbs; w/o crane - 32,200 lbs
M984 - 50,900 lbs
M985 w/ winch - 39,600 lbs; w/o winch - 38,700 lbs
Max speed: 57 mph 57 mph 57 mph 57 mph 57 mph
Cruising range: 300 mi 300 mi 300 mi 300 mi 300 mi
Maximum grade: 60% with payload of 22,000 lbs    
Engine: 445 or 450 horsepower diesel engine

Transmission:

 4-speed automatic and 2-speed Oshkosh transfer case with air-operated front tandem axle disconnect
Crew:     2

Vehicle Manufacturer: Oshkosh Truck Corporation

Dimensions:

    10:21 AM 10/1/2001Length: M977 / M978 / M985 - 401"; M983 - 351"; M984 - 392"
    Height: Operational 112", Transport 102" - All
    Width: 96" - All
    Wheelbase: M977 / M978 / M985 - 210"; M983 - 181"; M984 - 191"
    Turning Circle: M977 / M978 / M985 - 100'; M983 - 91'; M984 - 95'
    Vehicle Curb Weight: M977 With Winch - 38,800 lb., Without Winch - 37,900 lb.; M978 With Winch - 38,200 lb., Without Winch - 37,300 lb.; M983 With Crane - 39,200 lb., Without Crane - 32,200 lb.; M984 - 50,900 lb.; M985 With Winch - 39,600 lb., Without Winch - 38,700 lb.
    Ground Clearance: 24" - All

Performance:

    Maximum Speed: 57 mph Governed - All
    Cruising Range: 300 mi. @ Gross Vehicle Weight Rating - All
    Maximum Grade: 60% - All
    Approach Angle: 41 deg. - All
    Departure Angle: 45 deg. - All
    Side Slope: 30% - All
    Maximum Fording Depth: 48" - All

Equipment Specifications:

    Cab: Crew Seating: 2 Man
    Seat Design: Fore/Aft Adjustable
    Steering Type: Dual Gear With Integrated Hydraulic Power Assist

    Engine: Manufacturer: Detroit Diesel Allison
    Model: 8V92TA
    Type: 8 cylinder, 2-stroke, V-type Diesel
    Rating: 450 hp, @ 2100 rpm
    Fuel: Diesel, DF-2, JP-4, JP-8, VV-F-800
    Oil: 30 qt. With Filter (MIL-L-2104D, MIL-L-46167)
    Cooling System: 80 qt., Water, Radiator
    Fan: Engine-driven, Clutch Type

    Transmission: Manufacturer: Allison, Automatic
    Model: HT740D
    Speeds: 4 Speeds Forward/ 1 Reverse
    Oil: 38 qt. With Filter

    Transfer: Manufactuer: Oshkosh Truck Corporation, 55000
    Type: Air Operated, Front Tandem Disconnect
    Oil: 6.5 qt.

    Axles: Manufacturer: Front Tandem - Oshkosh Truck Corporation/Eaton; Rear Tandem - Eaton
    Models:
    No. 1 - RS480
    No. 2 - DS480-P - All
    No. 3 - M977 / M978 / M983 / M985 - DS480-P; M984 - DS650-P
    No. 4 - M977 / M978 / M983 / M985 - RS480; M984 - RS650
    Front Axle Steering Angle: 32 deg. - All
    Oil: Front Tandem - 17.5 qt.; Rear Tandem - 21.5 qt. - All

    Wheels: Type: Disk
    Quantity: 8 ea.
    Spare Tire: 1 ea.
    Rim Size: 20x10
    Stud Quantity: 10 per Wheel

    Tires: Radial With Tube
    Quantity: 8 ea.
    Spare: 1 ea.
    Tread Type: Radial Traction, Non-directional
    Size: 16:00x20"

    Brakes: Air-activated, Internal Expansion - All

    Electrical System: Alternator: Engine Driven: EMI/RFI Suppressed, Waterproof
    Rating Standard: M977 / M978 / M984 / M985 - 65 Amp, Optional: M983 - 100 Amp
    Batteries: 4 ea., 12v Connected in Series Parallel
    Voltage: 24v

    Self-Recovery Winch: Manufacturer: DP Manufacturing
    Model: 20K-HEMTT
    Wire Rope Diameter: 9/16"
    Wire Rope Length: 200'
    Line Pull - 1st Layer (With 5 Wraps Minimum): 20,000 lb.
    Line Pull - 2nd Layer: 18,173 lb.
    Line Pull - 3rd Layer: 16,663 lb.
    Line Pull - 4th Layer: 15,361 lb.
    Line Pull - 5th Layer: 14,254 lb.

    Recovery Winch: M984 Manufacturer: DP Manufacturing
    Model: 51022 60K
    Type: Automatic, Two Speed
    Wire Rope Diameter: 1"
    Wire Rope Length: 220'
    Line Pull - 1st Layer: (With 5 Wraps): 60,000 lb.
    Line Pull - 3rd Layer: 45,000 lb.

    Material Handling Crane: Manufacturer: M977 / M984 / M985- Grove; M983 Hiab
    Model: M977 - MHC977; M983 - 8001; M984 - MHC984; M985 - MHC985
    Maximum Capacity:
    M977 at Boom Length of 19': 2,500 lb.
    M983 at Boom Length of 10': 14,620 lb.
    M984 at Boom Length of 18.2': 6,000 lb.
    M985 at Boom Length of 16.5': 5,400 lb.




NEWSLETTER
Join the GlobalSecurity.org mailing list