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United States' M31 Tank Recovery Vehicle

Photos

M31 Tank Recovery Vehicle:
United States' M31 Tank Recovery Vehicle
Aberdeen Tank Museum
M31 Tank Recovery Vehicle at the Patton Museum in Ft Knox, Kentucky:
United States' M31 Tank Recovery Vehicle
Chris Bobo
M31 Tank Recovery Vehicle at the Patton Museum in Ft Knox, Kentucky:
United States' M31 Tank Recovery Vehicle
Chris Bobo

Design

Dummy gun replaces 75 mm. Simulated turret installed. 60,000 lb winch installed. It could tow light, medium, and heavy tanks across country. It could remove a medium tanks turret.

The turret basket was removed and an access door was installed.

Production

  • M31 Conversions: 509
    • Production: December 1942 - December 1943
  • M31B1, M31B2 Conversions: 146
    • Production: August - December 1943
  • M31B1: 150
    • Production: December 1942 - November 1943
  • Manufacturer: Baldwin Locomotive Works

Variants

  • M31 Tank Recovery Vehicle: Based on M3. Used a Continental R-975-C1 engine and was riveted.
  • M31B1 Tank Recovery Vehicle: Based on M3A3. Used a G.M. 6046 Diesel engine and was welded.
  • M31B2 Tank Recovery Vehicle: Based on M3A5. Used a G.M. 6046 Diesel engine and was riveted.
  • Grant ARV Mk I: British version with the turret and guns removed. The winch was located internally. Had an A-frame jib that could be removed.
  • ?: Australian conversion. Earth spades, a gantry, and an internal winch was added.

Specifications

  M31 Tank Recovery Vehicle
Crew 6
Physical Characteristics  
Weight 32.8 tons
Length 18.5'
Height 10.25'
Width 8.95'
Width over tracks  
Ground clearance 15"
Ground contact length 147"
Ground pressure 13.9 psi
Turret ring diameter  
Armament  
Main 2: .30 cal MG
Secondary  
MG  
Side arms  
Quantity  
Main  
Secondary  
MG  
Side arms  
Armor Thickness (mm) Front: 2"
Side: 1.5"
Hull Front, Upper  
Hull Front, Lower  
Hull Sides, Upper  
Hull Sides, Lower  
Hull Rear  
Hull Top  
Hull Bottom  
Turret Front 2"
Turret Sides 2"
Turret Rear  
Turret Top  
Engine (Make / Model) Wright Whirlwind
GMC
Guiberson
Bore / stroke  
Cooling Wright, Guiberson: Air
GMC: Water
Cylinders Wright, Guiberson: 9
GMC: 2x6
Capacity  
Net HP GMC: 420@2,000 rpm
Guiberson: 350@2,400 rpm
Power to weight ratio  
Compression ratio  
Transmission (Type) Synchromesh in 2nd, 3rd, 5th
Constant mesh in 1st and reverse
5 forward, 1 reverse
Steering Controlled differential
Steering ratio  
Starter Electric
Electrical system 24-volt
Ignition  
Fuel (Type)  
Octane  
Quantity Gasoline: 185 gallons
Diesel: 175 gallons
Fuel consumption - Road Gasoline: 0.6 mpg
Diesel: 0.8 mpg
Fuel consumption - Cross country  
Performance  
Traverse Hydraulic or hand
Speed - Road 25 mph
Speed - Cross Country 4-20 mph
Range - Road Gasoline: 120 miles
Diesel: 140 miles
Range - Cross Country  
Turning radius  
Elevation limits  
Fording depth 42"
Trench crossing 6'
Vertical obstacle 24"
Climbing ability 31° (60%) slope
Suspension (Type) 3 two-wheeled bogies on vertical volute springs
Wheels each side 3x2
Return rollers each side 3
Tracks (Type) Rubber block, rubber bushed double pin shoe
Track length  
Track width 16"
Number of links 79
Pitch 6"
Tire tread Rubber
Track centers/tread 6.9'

Sources:

  1. The Encyclopedia of Tanks and Armored Fighting Vehicles - The Comprehensive Guide to Over 900 Armored Fighting Vehicles From 1915 to the Present Day, General Editor: Christopher F. Foss, 2002
  2. Panzer Truppen The Complete Guide to the Creation and Combat Employment of Germany's Tank Force 1933-1942, Thomas L. Jentz, 1996
  3. Panzer Truppen The Complete Guide to the Creation and Combat Employment of Germany's Tank Force 1943-1945, Thomas L. Jentz, 1996
  4. British and American Tanks of World War Two, The Complete Illustrated History of British, American, and Commonwealth Tanks 1933-1945, Peter Chamberlain and Chris Ellis, 1969
  5. Tanks of the World, 1915-1945, Peter Chamberlain, Chris Ellis, 1972
  6. The Encyclopedia of Weapons of World War II, Chris Bishop, 1998
  7. M3 Lee/Grant Medium Tank 1941-45, Steven J Zaloga, 2005
  8. Tanks of World War II, Duncan Crow, 1979
  9. Battle Winning Tanks, Aircraft & Warships of World War II, David Miller, 2000
  10. AFV 11: M3 Medium (Lee/Grant), Peter Chamberlain and Chris Ellis
  11. Tank Data, Aberdeen Proving Grounds Series, 1968?
  12. Tank Data 2, Aberdeen Proving Grounds Series, E. J. Hoffschmidt and W. H. Tantum IV, 1969
20th Century American Military History Crucial Site