M939 Series - 5 Ton 6X6 Truck

M809 Series 5 Ton 6X6 Truck

M939 Series

5 Ton 6X6 Truck

The M939 is a 5-ton (10,000lb (4,500kg)) 6x6 truck. The M939 is the upgraded model of the M809 series 5-ton (10,000lb (4,500kg)) 6x6 truck. Even though there are several upgrades they are still mechanically similar in design. In 1982, AM General started producing the M939 and then the M939A1. In 1989, Bowen-McLaughlin-York (BMY) manufactured the upgraded M939A2. Since production started in 1982, there have been approximately 32,000 total M939s They are mainly used as cargo and dump trucks, wreckers, and vans.

M939 Series - 10,000Lb 6X6 Military Truck

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Production History

  • 1982 - M939 / M939A1 - AM General
  • 1989 - M939A2 - Bowen-McLaughlin-York (BMY)

Crew

  • Driver
  • 2 Passengers

Mobility

  • Engine:
    • M939/M939A1: Cummins NHC 250 240hp (180kW)
    • M939A2: Cummins 6CTA8.3 240hp (180kW)
  • Transmission: Allison Automatic, 2 Speed Transfer Case
  • Speed Limit: Max Speed 63mph(101 km/h) / Recommended Limited Speed: 40mph (65 km/h)
  • Maxmimum Range: 350mi (536.3km)
  • Fuel Capacity: 81gal (306.6L) Diesel

Dimensions

  • Length: 307in (7.80m)
  • Width: 98in (2.49m)
  • Height: 116in (2.95m)
  • Weight: 21,600lbs (9806kg) empty

Biography of the M939 Series of Trucks

The M939 5-ton (10,000lb (4,500 kg)) 6x6 truck is an improved version of the M809 series. These improvements include a hydraulic powered front winch, an automatic transmission, complete air brake system, a 3-member crew cab, and a more efficient power steering system and electrical system. Production for the M939s started in 1982, by AM General with the first 11,000 as rebuilds of the M809 chassis. The M939A2s were manufactured by Bowen-McLaughlin-York (BMY) in 1989. The M939s are still in service, but since 1991, they are slowly being phased out by the Medium Tactical Vehicles (MTV).

The M939 series comes in 6 body variants which are; cargo, long wheel based cargo, dump, wrecker, and van. There are 3 wheelbases short, standard long and extra-long. The 14ft 11in (4.55m) “standard long wheeled” is used for cargo and wrecker variants. The 13ft 11in (4.24m) “short wheeled” is used for tractors and dump variants. The 17ft 11in (5.46m) “extra-long wheeled” is used for long cargo and expansible van variants. The M939 series has a ladder frame with 3 axles with the front axle on semi-elliptical leaf springs and rear tandem on quarter elliptical leaf springs. The brakes are full air which is an upgrade from the air over hydraulic drum brakes on the M809s.

All M939s are equipped with an Allison automatic transmission with an improved 2-speed transfer case that engages the front axle in low range. The driver can engage in high range with an air control. M939 and M939A1 use a Cummins NHC 250 240hp (180kW) 855 cu in (14.0l) naturally aspirated inline 6-cylinder diesel engine. M939A2 use a Cummins 6CTA8.3 240hp (180kW) 504 cu in (8.3L) turbocharged inline 6-cylinder diesel engine. The A2s received a central tire inflation system. The M939Als main upgrade was 14:00xR20 super-sized tires and rear tandem singles which also required modification to the spare tire rack and lifting device. Original M939s use 11:00xR20 tires and rear tandem duals. In 1991 till 2003, anti-lock brakes were added in response to the vehicle accidents caused by poor brake performance and stability when loaded.

M939 Variants

M923

M923 - Drop Side Cargo Truck

NSN w/o winch 2320-01-050-2084


The M923 is a standard long-wheel-based cargo truck with drop sides. Some variants come equipped with troop seats, side racks and an overhead bow with canvas top. The vehicle’s primary function is to haul troops or cargo over various terrains. The cargo bed is 7ft (2.1m) wide and 14ft (4.3m) long. The vehicle total length is 25ft 7in (7.80m) long, 8ft 2in (2.49m) wide and 9ft 8in (2.95m) in height. It does not come standard with a front winch.

Modernized M923 Models:
M923

M924 - Cargo Truck

NSN w/o winch 2320-01-047-8773


The M924 is a long-wheel based cargo truck without drop sides. Some variants come equipped with troop seats, side racks and an overhead bow with canvas top. The vehicle’s primary function is to haul troops or cargo over various terrains. The cargo bed is 7ft (2.1m) wide and 14ft (4.3m) long. The vehicle total length is 25ft 7in (7.80m) long, 8ft 2in (2.49m) wide and 9ft 8in (2.95m) in height. It does not come standard with a front winch.

Modernized M924 Models:
M925

M925 - Drop Side Cargo Truck

NSN w/ winch 2320-01-047-8769


The M925 cargo truck is the same build as the M923 drop side cargo truck, except comes standard with a front winch. Some variants come equipped with troop seats, side racks and an overhead bow with canvas top. The vehicle’s primary function is to haul troops or cargo over various terrains. The cargo bed is 7ft (2.1m) wide and 14ft (4.3m) long. The vehicle total length is 27ft 5in (8.36m) long, 8ft 2in (2.49m) wide and 9ft 8in (2.95m) in height.

Modernized M925 Models:
M926

M926 - Cargo Truck

NSN w/ winch 2320-01-047-8772


The M926 cargo truck is the same build as the M924 cargo truck, except comes standard with a front winch. Some variants come equipped with troop seats, side racks and an overhead bow with canvas top. The vehicle’s primary function is to haul troops or cargo over various terrains. The cargo bed is 7ft (2.1m) wide and 14ft (4.3m) long. The vehicle total length is 27ft 4in (8.33m) long, 8ft 2in (2.49m) wide and 9ft 8in (2.95m) in height.

Modernized M926 Models:
M927

M927 - Extra-Long Cargo Truck

NSN w/o winch 2320-01-047-8771


The M927 is an extra-long wheel based cargo truck without drop sides. Some variants come equipped with troop seats, side racks and an overhead bow with canvas top. The vehicle’s primary function is to haul troops or cargo over various terrains. The cargo bed is 7ft (2.1m) wide and 20ft (6.1m) long. The vehicle total length is 31ft 11in (9.73m) long, 8ft 2in (2.49m) wide and 9ft 8in (2.95m) in height. It does not come standard with a front winch.

Modernized M927 Models:
M928

M928 - Extra-Long Cargo Truck

NSN w/o winch 2320-01-047-8770


The M928 is the same build as the M927 extra-long-wheeled except comes standard with a front winch. Some variants come equipped with troop seats, side racks and an overhead bow with canvas top. The vehicle’s primary function is to haul troops or cargo over various terrains. The cargo bed is 7ft (2.1m) wide and 20ft (6.1m) long. The vehicle total length is 33ft 8in (10.26m) long, 8ft 2in (2.49m) wide and 9ft 8in (2.95m) in height.

Modernized M928 Models:
M929

M929 - Dump Truck

NSN w/o winch 2320-01-047-8756


The M929 is a dump truck with the primary function of transporting and depositing cargo such as sand, gravel, dirt and bulky materials. The dump body uses a hydraulic system that converts mechanical power from the engine to fluid power through the hydraulic pump. They also have a dual fuel tank. The dump trucks can be equipped with overhead bows, canvas top and troop seats if needed. The total vehicle length is 22ft 9in (6.93m) long, 8ft 2in (2.49m) wide and 9ft 9in (2.97m) in height. It does not come standard with a front winch.

Modernized M929 Models:
M930

M930 - Dump Truck

NSN w/ winch 2320-01-047-8755


The M930 dump truck is the same as the M929 dump truck, except comes standard with a front winch. The vehicle’s primary function is to transport and deposit cargo such as sand, gravel, dirt and bulky materials. The dump body uses a hydraulic system that converts mechanical power from the engine to fluid power through the hydraulic pump. They also have a dual fuel tank. The dump trucks could be equipped with overhead bows, canvas top and troop seats if it was needed. The total vehicle length is 24ft 6in (7.47m) long, 8ft 2in (2.49m) wide and 9ft 9in (2.97m) in height.

Modernized M930 Models:
M931

M931 - Tractor Truck

NSN w/o winch 2320-01-047-8753


The M931 is a tractor truck that can tow trailers up to 37,500lb (17,000kg). The tractor is equipped a dual fuel tank, a spare tire, and a fifth wheel approach plate and desk plate, which provides a mechanical connection between the truck and the tow trailer. The vehicle uses the short wheeled base with a total length of 22ft 9in (6.93m) long, 8ft 2in (2.49m) wide and 9ft 4in (2.84m) in height. It does not come standard with a front winch.

Modernized M931 Models:
M932

M932 - Tractor Truck

NSN w/ winch 2320-01-047-8752


The M932 is the same build as the M931, except comes standard with a front winch. The vehicle’s primary function is to tow trailers up to 37,500lb (17,000kg). The tractor is equipped a dual fuel tank, a spare tire, and a fifth wheel approach plate and desk plate, which provides a mechanical connection between the truck and the tow trailer. The vehicle uses the short wheeled base with a total length of 23ft 10in (7.26m) long, 8ft 2in (2.49m) wide and 9ft 4in (2.84m) in height.

Modernized M932 Models:
M934

M934 - Expansible Van Truck

NSN 2320-01-047-8750


The M934 is an expansible van truck that uses the extra-long wheel base. The van body is 17ft (5.2m) long with a slide out section on each side that when extended can expand the floor space to almost 14ft (4.3m) wide, nearly doubling the width. The vehicle’s primary function is to transport electronic base stations such as, communication stations or electronic repair stations. They have the ability to hold up to 5,000lb (2,300kg) of equipment while in the field. 15,000lb (6,810kg) cross country and up to 30,000lb (46,620kg) on highway roads. The vehicle’s total length is 30ft 5in (9.27m) long, 8ft 2in (2.49m) wide and 11ft 4in (3.45m) in height.

Modernized M934 Models:
M935

M935 - Expansible Van Truck

NSN w/ hydraulic lift 2320-01-047-8751


The M935 is the same build as the M934 van, except it comes with a hydraulic lift. The lift has the ability to lift up to 3,000lb (1,362kg) of equipment. The van body is 17ft (5.2m) long with a slide out section on each side that when extended can expand the floor space to almost 14ft (4.3m) wide, nearly doubling the width. The primary function of the vans is to transport electronic base stations to the field that could be used for communication stations or electronic repair stations. They have the ability to hold up to 5,000lb (2,300kg) of equipment while in the field. 15,000lb (6,810kg) cross country and up to 30,000lb (46,620kg) on highway roads. The vehicle’s total length is 30ft 5in (9.27m) long, 8ft 2in (2.49m) wide and 11ft 4in (3.45m) in height.

Modernized M935 Models:
M936

M936 - Wrecker Truck

NSN 2320-01-047-8754


The M936 is a wrecker truck that is used to recover broken or stuck trucks and large equipment. The wrecker is equipped with a hydraulic boom that has the ability to lift up to 20,000lb (9,100kg) and up to 7,000lb (3,200kg) when towing. The boom can extend up to 18ft (5m) with the ability to rotate 360° and elevate to 45°. The vehicle has a front 20,000lb (9,100kg) winch and a rear 45,000lb (20,000kg) winch. The total length is 30ft 2in (9.19m) long, 8ft 2in (2.49m) wide and 8ft 2in (2.49m) in height.

Modernized M936 Models: