📌 AM General M931 Tractor Truck Short, Gt Yarmouth.

Tractor Truck M931 / M932

 

The M931 (M932 w/winch) was a semi-tractor used to tow semi-trailers up to 18.739 U.S tons. A front-mounted winch was optional. Unlike commercial trucks the fifth-wheel could also pivot side to side, making a more flexible connection to the trailer, even so, off-road performance was limited.

 

▪︎M931 Tractor short - Length: 22ft 0.5in / Width: 8ft 1.4in / Height: 9ft 6.9in / Weight: 9.947 U.S tons

▪︎M932 Tractor short - Length: 23ft 10in / Width: 8ft 1.4in / Height: 9ft 6.9in / Weight: 10.497 U.S tons.

 

The M939 Truck is a 5-ton 6x6 U.S Military Heavy Truck, the basic cargo versions were designed to transport a 10,000lb cargo load over all terrain in all weather. Designed in the late 1970's to replace the M39 and M809 series of trucks, it has been in service ever since. The M939 evolved into its own family of Cargo Trucks, Dump Trucks, Semi-Tractors, Vans, Wreckers, and bare chassis / cabs for specialty bodies, 44,590 unis in all were produced.

 

In the late 1970's the M809 series 5-ton 6x6 Trucks, based on a 1949 design, were becoming old and mechanically dated. It was still a useful type, with 35,000 in service. A ''Product Improvement Package'' was developed to rebuild and update the M809 series into the M939 series. A new cab and hood are spotting features, but there were also other improvements.

In 1982 AM General, who built all M809's, began rebuilding M809's into the M939 and M939A1 series at their South Bend, Indiana plant. They would rebuild 24,100. A follow-up model, the all-new M939A2 series, was produced by Bowen-McLaughlin-York / BMY in Marysville, Ohio. They would build 20,490. In 1991 the M939 series was replaced by the all-new design M1083-M1091 Medium Tactical Vehicles.

 

All models of the M939 share a common basic chassis, cab, hood, and fenders, the basic truck is a 6x6 Heavy Truck. Early M939's were rebuilds of M809 vehicle chassis with a new automatic transmission, transfer cases, cab, and hood. Suffix –A2 are new production with later model Cummins engine. The vehicles have a wide variety of configurations and weights. Note that the motor and tyre specifications, along with other improvements, apply to the A2 versions (and A1 versions) of each base model listed below. There is an M928, an M928A1, and M928A2.

 

Tractor Truck M931 / M932 general specifications:

▪︎Type: 5-ton 6x6 Tractor Truck

▪︎Place of Origin: United States

▪︎Manufacturer: AM General / Kia Motors

▪︎Produced: 1982 to 1987 (AM General) / 1985 to present (South Korea)

▪︎Number Built: 44,590 (AM General)

▪︎Mass: 11.015 U.S tons / Length: 22ft 1in / Width: 8ft 2in / Height: 10ft 1in

▪︎Powerplant: Cummins 6CTA8.3 engine 250hp at 2,100rpm / Cummins NHC250 engine 250hp at 2,100rpm

▪︎Transmission: Allison 5 speed automatic x 2 range

▪︎Transfer: Rockwell T1138

▪︎Suspension: Beam axles on leaf springs

▪︎Axels: Rockwell 6.443:1

▪︎Steering: A1 - Ross Hydraulic HFB64 / A2 Sheppard 292SF61

▪︎Brake System: Fully air actuated Wedge type

▪︎Tyre Size: 11.00R20 / 14.00R20 / 395/85R20 (optiona)

▪︎Fighter Wheel: Holland double oscilating 36in diameter with 2in kingpin

▪︎Electrical System: 24 volt / 12 volt (optional)

▪︎Maximum Speed: 55mph.

 

 

Sourced from Wikipedia en.m.wikipedia.org/wiki/M939_series_5-ton_6%C3%976_truck

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