Landing Vehicle, Tracked, Recovery, Mark 11-3

LVTR1: General
Date of first acceptance 1956 Total acceptances 65
Manufacturer FMC Corp. Crew
3 men:
  • Crew chief in hull right front
  • Driver in hull left front
  • Rigger
LVTR1: Dimensions
Combat weight (land) 82,200lbs
37,300kg
Length 356"
904cm
Width 140.5"
356.9cm
Tread 116.7"
296.4cm
Ground clearance, sides 11"
28cm
Ground pressure, zero penetration 7.75psi
.544kg/cm²
LVTR1: Armament
None
LVTR1: Armor
Assembly
Welding
Hull
Rolled homogeneous steel
Maximum .625"
1.59cm
Minimum .25"
.64cm
LVTR1: Automotive
Engine Continental LV-1790-1; 12 cylinder, 4 cycle, 90° vee gasoline
Horsepower Net: 704@2800rpm
Gross: 810@2800rpm
Torque Net: 1440 ft-lb@2000rpm
Gross: 1610 ft-lb@2200rpm
Fuel capacity 456gal
1730L
Transmission Allison CD-850-4A or -4B, 2 ranges forward, 1 reverse
Steering Mechanical, wobble stick
Brakes Multiple plate, oil cooled
LVTR1: 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
LVTR1: Track
Center guide, single pin, steel with inverted grouser
Width 20.75"
52.71cm
Pitch 5"
13cm
Shoes/track 134 Ground contact length 229.25"
582.30cm
LVTR1: Performance
Max level road speed 30mph
48kph
Max water speed 6.8mph
11kph
Max trench 144"
366cm
Max grade 70%
Max vertical obstacle 36"
91cm
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 60,000lb (27,000kg) winch was installed, and the power for this was provided by a Willys 4 cylinder 48hp engine from the M38A1 quarter-ton truck. A boom was mounted on the front of the vehicle to assist in removing engines or other loads, and the crew chief acted as the crane operator. The boom had a capacity of 8000lbs (3600kg) with a single line or 14,000lbs (6400kg) with a two-part line. A General Electric welder was fitted, which could also be used as a battery charger or assist with cold-weather starts. A 5 ft³/min (.14m³/min) air compressor was 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.

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References

  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. Research, Investigation and Experimentation in the Field of Amphibian Vehicles. Kalamazoo, MI: Ingersoll Kalamazoo Division, Borg-Warner Corp., Dec 1957.
  3. Crismon, Fred W. U.S. Military Tracked Vehicles. Osceola, WI: Motorbooks International, 1992.

Last updated 8 Feb 2014.
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© Copyright 2001-14 Chris Conners