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Today in WW II: 2 Aug 1939 Albert Einstein writes to Pres. Roosevelt about the potential for a uniquely powerful uranium weapon and indications of German interest in it, the inspiration for the Manhattan Project.  More 
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M-917 20-Ton Dump Truck

The full nomenclature of the M917 is Truck Chassis, 75,000 GVWR, 8x6, for 20-ton dump truck, 12 cu yd dump truck. It is also called Truck, Dump, 20-Ton, 8x6.

The M917 vehicles are authorized in Corps units, primarily the Construction and Combat Support Companies and the Combat Heavy Battalions.

AM General produced the M917 while Freightliner produced the M917A1 and M917A2 vehicles.

M917 Truck, Dump Characteristics

  M917 M917A1 M917A2
Engine Cummins Model NTC-400
400 bhp@2100rpm
Big Cam I
Big Cam II Detroit Diesel S60 12.7 liters (776 cubic inches), 430 HP, 1450 LB-FT Torque, DDEC IV Engine Controller
Transmission Semi-Automatic, 16fwd, 2 rev. Allison HT-750 CRD Allison HD4070P (7 speed automatic, double-overdrive)
Transfer Case     Meritor T-2119 (1-speed)

The M917 is equipped with a pusher axle for equalizing the load on the rear axles. The M917A2 is also available with a Material Control System (MCS) for spreading materials in a variety of patterns. NSNs are:

  • M917 NSN 3805-01-028-4389
  • M917A1 NSN 3805-01-431-1165
  • M917A1 W/MCS NSN 3805-01-432-8249
  • M917A2 NSN 3805-01-488-7442

Truck, Dump, 20-Ton, 8x6 M917.  Photo courtesy Freightliner LLC
Truck, Dump, 20-Ton, 8x6 M917. Photo courtesy Freightliner LLC.

An M917 dump truck follows an M1114 HMMWV, near north entry control point, Logistics Support Area Anaconda, Iraq.  The bridge was newly constructed by Horizontal Platoon and 2d Platoon of Bravo Company, 84th Engineer Battalion
An M917 dump truck follows an M1114 HMMWV across a bridge, near north entry control point, Logistics Support Area Anaconda, Iraq, May 2006. The bridge was newly constructed by Horizontal Platoon and 2d Platoon of Bravo Company, 84th Engineer Battalion.

North Dakota Army National Guard using an M917 20-ton dump truck to reinforce an earthen dike, Pembina River near Neche, ND, 17 April 2006
North Dakota Army National Guard using an M917 20-ton dump truck to reinforce an earthen dike, Pembina River near Neche, ND, 17 April 2006.

84th Engineer Combat Battalion (Heavy) loader and M917 trucks fill a tank ditch, Camp Bucca, Iraq, 26 June 2006
84th Engineer Combat Battalion (Heavy) loader and M917 trucks fill a tank ditch, Camp Bucca, Iraq, 26 June 2006. Note armored doors on the dump truck.

Thanks to James Grein for help with this page.