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M114
M114A1


Armored Command and Reconnaissance Carrier M1141-4
M114: General
Date of first acceptance 1962 Total acceptances 615
Manufacturer Cadillac Motor Car Division of General Motors Corp. Crew
4 men:
  • Commander in hull center
  • Driver in hull left front
  • Observer in hull right rear
  • Passenger in hull left rear
M114: Dimensions
Combat weight 15,093lbs
6846.2kg
Height over MG 94.1"
239cm
Length 175.75"
446.41cm
Gun overhang forward 0"
Width over track shrouds 91.75"
233.0cm
Tread 72.75"
184.8cm
Ground clearance 14.25"
36.20cm
Ground pressure, zero penetration 5.0psi
.35kg/cm²
M114: Armament
Type Mount Ammunition Traverse
.50cal M2HB MG Commander's cupola 1000 rounds 360°
(manual)
7.62mm M60 MG Observer's station 3000 rounds 360°
(manual)
Night vision
Infrared periscope M19 for driver
M114: Armor
Assembly
Welding
Hull
Rolled aluminum armor
Location Thickness Angle from vertical
Upper front 1.25"
3.18cm
70°
Lower front 1.75"
4.45cm
28°
Upper sides 1.25"
3.18cm
Lower sides .75"
1.9cm
Rear 1.25"
3.18cm
Top 1.5"
3.8cm
90°
Floor 1.00"
2.54cm
90°
M114: Automotive
Engine Chevrolet 283-V8 Military; 8 cylinder, 4 cycle, vee gasoline
Horsepower Net: 115@3600rpm
Gross: 160@4200rpm
Torque Net: 210 ft-lb@2400rpm
Gross: 240 ft-lb@2800rpm
Fuel capacity 110gal
420L
Transmission Hydramatic Model 305MC, 4 speeds forward, 1 reverse
Steering Allison GS 100-3, geared, clutch-brake, steering bar
Brakes Multiple plate, oil cooled
M114: Suspension
Type Road wheels Track return rollers
Torsion bar 4 individually sprung dual/track Flat track
Drive sprockets Idlers Shock absorbers
11-tooth front drive Dual adjustable at rear of track On first and last road wheels/track
M114: Track
Double center guide, band type
Width 16.5"
41.9cm
Pitch 32" long sections;
4" cross bar pitch
81cm long sections;
10cm cross bar pitch
Shoes/track 10 sections/track;
160 cross bars/track
Ground contact length 91"
230cm
M114: Performance
Max level road speed 36mph
58kph
Max water speed 3.4mph
5.5kph
Max trench 60"
150cm
Max grade 60%
Max vertical obstacle 20"
51cm
Min turning diameter 16'
4.9m
Max fording depth Floats Cruising range ~275mi, roads
~443km, roads


The boxy M114 somewhat visually resembled the M113 APC, but was smaller and performed a different task. However, the front hull of the M114 extended in front of the tracks, which made crossing ditches or climbing out of streams very difficult. This and other cross-country limitations caused the US Army to initiate retirement of the M114 in 1973; the last vehicles were removed from the inventory in the early 1980s.

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Armored Command and Reconnaissance Carrier M114A11-4
M114A1: General
Date of first acceptance 1962 Total acceptances 3095
Manufacturer Cadillac Motor Car Division of General Motors Corp. Crew
4 men:
  • Commander in hull center
  • Driver in hull left front
  • Observer in hull right rear
  • Passenger in hull left rear
M114A1: Dimensions
Combat weight 15,276lbs
6929.2kg
Height over MG 84.9"
216cm
Length 175.75"
446.41cm
Gun overhang forward 0"
Width over track shrouds 91.75"
233.0cm
Tread 72.75"
184.8cm
Ground clearance 14.25"
36.20cm
Ground pressure, zero penetration 5.1psi
.36kg/cm²
M114A1: Armament
Type Mount Ammunition Traverse
.50cal M2TTHB MG Commander's cupola 1000 rounds 360°
(manual)
7.62mm M60 MG Observer's station 3000 rounds 360°
(manual)
Night vision
Infrared periscope M19 for driver
M114A1: Armor
Assembly
Welding
Hull
Rolled aluminum armor
Location Thickness Angle from vertical
Upper front 1.25"
3.18cm
70°
Lower front 1.75"
4.45cm
28°
Upper sides 1.25"
3.18cm
Lower sides .75"
1.9cm
Rear 1.25"
3.18cm
Top 1.5"
3.8cm
90°
Floor 1.00"
2.54cm
90°
M114A1: Automotive
Engine Chevrolet 283-V8 Military; 8 cylinder, 4 cycle, vee gasoline
Horsepower Net: 115@3600rpm
Gross: 160@4200rpm
Torque Net: 210 ft-lb@2400rpm
Gross: 240 ft-lb@2800rpm
Fuel capacity 110gal
420L
Transmission Hydramatic Model 305MC, 4 speeds forward, 1 reverse
Steering Allison GS 100-3, geared, clutch-brake, steering bar
Brakes Multiple plate, oil cooled
M114A1: Suspension
Type Road wheels Track return rollers
Torsion bar 4 individually sprung dual/track Flat track
Drive sprockets Idlers Shock absorbers
11-tooth front drive Dual adjustable at rear of track On first and last road wheels/track
M114A1: Track
Double center guide, band type
Width 16.5"
41.9cm
Pitch 32" long sections;
4" cross bar pitch
81cm long sections;
10cm cross bar pitch
Shoes/track 10 sections/track;
160 cross bars/track
Ground contact length 91"
230cm
M114A1: Performance
Max level road speed 36mph
58kph
Max water speed 3.4mph
5.5kph
Max trench 60"
150cm
Max grade 60%
Max vertical obstacle 20"
51cm
Min turning diameter 16'
4.9m
Max fording depth Floats Cruising range ~275mi, roads
~443km, roads


The M114A1 was armed with a new commander's weapon station, and the .50cal MG could be aimed and fired from within the vehicle. The new weapon station was lower than the M114's external machine gun mount, and M114A1 also featured a reinforced trim vane. In 1969 the Hispano-Suiza HS-820 20mm gun (designated in US service as the M139) replaced the .50cal MG on some M114A1s; these were designated M114A1E1, and later called M114A2.

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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. Crismon, Fred W. U.S. Military Tracked Vehicles. Osceola, WI: Motorbooks International, 1992.

  3. Hogg, Ian V. The Greenhill Armoured Fighting Vehicles Data Book. London: Greenhill Books, 2000.

  4. Holloway, Mark. "M114's." E-mail to the author. 23 Nov 2001.



Last updated 15 Dec 2002.

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© Copyright 2001-02 Chris Conners