Landing Vehicle, Tracked, Recovery, Mark 1A11-4

LVTR1A1: General
Date of first acceptance (LVTR1) 1956 Total acceptances 65
Manufacturer FMC Corp. Crew
3 men:
  • Crew chief in hull right front
  • Driver in hull left front
  • Rigger
LVTR1A1: Dimensions
Combat weight (land) 82,200lbs
Height with king post stowed 129"
Length overall 381"
Width overall 140.5"
Tread 116.7"
Ground clearance, sides 11"
Ground pressure, zero penetration 8.65psi
LVTR1A1: Armament
LVTR1: Armor
Rolled homogeneous steel
Maximum .625"
Minimum .25"
LVTR1A1: Automotive
Engine Continental LV-1790-1; 12 cylinder, 4 cycle, 90° vee gasoline
Horsepower Net: 704@2,800rpm
Gross: 810@2,800rpm
Torque Net: 1,440 ft-lb@2,000rpm
Gross: 1,610 ft-lb@2,200rpm
Fuel capacity 456gal
Transmission Allison CD-850-4A or -4B, 2 ranges forward, 1 reverse
Steering Mechanical, wobble stick
Brakes Multiple plate, oil cooled
LVTR1A1: Suspension
Type Road wheels Track return rollers
Torsilastic 9 pairs of dual/track 5 dual/track
Drive sprockets Idlers Shock absorbers
17-tooth rear drive Dual compensating at front of track None
LVTR1A1: Track
Center guide, single pin, steel with inverted grouser
Width 20.75"
Pitch 5"
Shoes/track 134 Ground contact length 229.25"
LVTR1A1: Performance
Max level road speed 30mph
Max water speed 6.8mph
Max trench 144"
Max grade 70%
Max sideslope 60% Max vertical obstacle 36"
Min turning diameter Pivot Max fording depth Floats
Cruising range ~190mi, roads
~57mi, water
~306km, roads
~92km, water

LVTR1 was the recovery and maintenance variant of the LVTP5. A winch was installed with a maximum single-line pull capacity of 45,000lb (20,400kg), and the power for this was provided by the Willys 4-cylinder 48hp engine common to the M38A1 quarter-ton truck. A boom was mounted on the front of the vehicle to assist in removing engines or handling other loads, and the crew chief acted as the crane operator. The boom had a maximum lift capacity of 7,000lbs (3,000kg). The maximum boom reach was 141" (358cm) at horizontal or 99" (250cm) at 45°. At horizontal, the boom could lift a load to 77" (200cm), and to 187" (475cm) when at 45°. The boom could be traversed to 85° right or left of center, and its maximum elevation was 65°. A General Electric welder was fitted, which could also be used as a battery charger or assist with cold-weather starts. Two air compressors were also installed.

Modifications to the LVTR1's engine air intake and exhaust system produced the LVTR1A1. The most obvious external difference was a large housing on the vehicle's rear roof above the engine.




  1. Hunnicutt, R.P. Bradley: A History of American Fighting and Support Vehicles. Navato, CA: Presidio Press, 1999. Reprinted with permission from Bradley, R.P. Hunnicutt ©1999, available from Presidio Press, 505B San Martin Drive, Suite 160, Navato, CA 94945.
  2. FMFM 9-2 Amphibian Vehicles. Washington, DC: Department of the Navy, Headquarters United States Marine Corps, 17 September 1964.
  3. Research, Investigation and Experimentation in the Field of Amphibian Vehicles. Kalamazoo, MI: Ingersoll Kalamazoo Division, Borg-Warner Corp., Dec 1957.
  4. Crismon, Fred W. U.S. Military Tracked Vehicles. Osceola, WI: Motorbooks International, 1992.
Last updated 28 Nov 2021.
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