M939 Truck

In the early 1970s the United States Army awarded a contract to the AM General Corporation to develop a new truck type that you should replace the previous 2.5 - tone and 5-tone types.

Development and delivery

Under this contract, AM General developed the M809 series of trucks. AM General delivered 92,000 pieces of produced in the South Bend works M809er to the U.S. Army and other friendly armies. In addition to this large - order AM General delivered from 1982 21.000 pieces of a modernized type of 5-ton trucks with the U.S. designation M939 Series.

Technology

AM General M809 and M939 developed for a completely new system which allowed the drivers of the trucks while driving, depending on the application request via dashboard switch to let air out of the tires. AM General had patented CTIS ( Central Tire Inflation System = ). It allows greater mobility, spared both the tires and so extended their lifespan.

All M809 had a 250 -hp Cummins NHC - diesel engine with a 5-speed manual transmission and two -stage reduction (transfer case). The top speed was around 86 km / h with a 6x6 all-wheel drive. They could as required with or without front winch (ww / wow) are supplied. The pulling capacity of the winch was 10 tons (20,000 lbs) and the on-board electrics work with 24 volts ( two batteries with 12 V in series, plus two for the boot process ). The life span was 20 to 22 years.

Variants

  • M809 Truck Chassis for M813, M813 and M815 A1
  • M809A1 Truck Chassis for M816 Wrecker
  • M810 - Truck chassis generally for wheelbase 4.24 m
  • M811 - Truck chassis generally for wheelbase 5.46 m for M814
  • M811 A1 Truck chassis generally for wheelbase 5.46 m for M819
  • M811 A2 Truck chassis generally for wheelbase 5.46 m for M820
  • M812 - Truck chassis for general Wheelbase 5.46 m, for Bridge Transporter ( Transporter Bridge Floating ) M821 with 14:00 x20 tires
  • M812 A1 similar to M 812, but especially for rocket launchers ( Honest John )
  • M813 Cargo Truck ( Cargo Truck ) 11:00 x20 tires
  • M813 A1 Cargo Truck with tailgate / drop sides (such as M813, but with a folding cot sides ) 11:00 x20 tires
  • M814 Cargo Truck LWB Long Wheel Base ( Long version ) 11:00 x20 tires
  • M815 Bolster Truck (for tube or roller transport ) 11:00 x20 tires
  • M816 Medium Wrecker Truck ( recovery and tow truck ) 11:00 x20 tires
  • M817 Dump Truck ( tipper ) 11:00 x20 tires
  • M818 Tractor Truck ( Tractor ) 11:00 x20 tires
  • M819 Tractor Truck, Wrecker ( truck with crane ) 12:00 x20 tires
  • M820 Expandable Van Truck ( box structure for workshop, command center etc., foldout ) 11:00 x20 tires
  • M820 A2 Van Expandable Truck ( such as M820, but no windows, cooling, heating under construction ) 11:00 x20 tires
  • M821 Bridge Transporter Truck ( equipped to transport bridge with stakes / stakes ) 14:00 x20 tires

Type descriptions

M813

The M813 is a product renewal of the old M54 types. The purpose of this vehicle is to transport material, people and freight charges on all types of roads and terrain in any weather. He is able, without snorkel equipment ( the so-called Fordingkit ) 0.76 m to go through with snorkeling gear 1.98 m deep water. The curb weight is around 11 tons, 10 tons of payload on roads and 5 tons off road. The towing capacity is 15 tons on the road and 7.5 tons in the terrain. The vehicle 7.721 m long, 2.488 m wide and 2.946 m high. The tank capacity is approximately 390 liters.

M816

The M816 is the perfect Mountain or Abschlepperversion the M809 series. The vehicle is able to move and to lift all 5 -ton truck, it is equipped with a 5 -ton front and a 10-ton stern winch, a hydraulic crane with a lift capacity of 10 tons ( with outrigger and support of the tree ) or 5 tons (without). The M816 is 9,042 m long, 2.488 m wide and 2.946 m high. The tank capacity is approximately 665 liters.

M818

As a replacement for the M52 the M818 was procured as a tractor. It is equipped with a fifth wheel ( fifth wheel ) to pull trailers with loads of 18.75 tonnes in the field ( 7.5 tons to Saddle plate ) and 27.5 tons on the road (12.5 tons). The tank capacity includes approximately 550 liters. The vehicle 7,137 m long, 2.488 m wide and 2.946 m high.

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