Landing Vehicle, Tracked, Recovery, Mark 11-4

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
37,300kg
Height with king post stowed 129"
328cm
Length overall 381"
968cm
Width overall 140.5"
356.9cm
Tread 116.7"
296.4cm
Ground clearance, sides 11"
28cm
Ground pressure, zero penetration 8.65psi
.607kg/cm²
LVTR1A1: Armament
None
LVTR1: Armor
Assembly
Welding
Hull
Rolled homogeneous steel
Maximum .625"
1.59cm
Minimum .25"
.64cm
LVTR1A1: 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
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"
52.71cm
Pitch 5"
13cm
Shoes/track 134 Ground contact length 229.25"
582.30cm
LVTR1A1: Performance
Max level road speed 30mph
48kph
Max water speed 6.8mph
11kph
Max trench 144"
366cm
Max grade 70%
Max sideslope 60% 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 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.

Home       Vehicle list       Top

                            



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. 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.
Questions? Comments? Corrections? Email me
© Copyright 2001-21 Chris Conners