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M1064
M1064A3

Armored Self-propelled 120mm Mortar Carrier M10641-4

M1064: General
Manufacturer FMC Corp. Crew 4 men
M1064: Dimensions
Combat weight 27,635lbs
12,535kg		 Height over MG pintle 87.5"
222cm
Length 209.38"
531.83cm		 Gun overhang forward 0"
Width over track shrouds 105.75"
268.61cm		 Tread 85.0"
216cm
Ground clearance 17.125"
43.498cm		 Ground pressure, zero penetration 8.77psi
.617kg/cm²
M1064: Armament
Type Mount Traverse Elevation
120mm Mortar M121 Passenger compartment 90°
(manual)		 Manual
.50cal M2HB MG Flexible on cupola mount 360°
(manual)		 Manual
Aiming equipment
Sightunit M67 or M53 for gunner
Night vision
Infrared periscope M19 for driver
M1064: Armor
Assembly
Welding
Hull
Rolled 5083/5086 H32 aluminum armor
Location Thickness Angle from vertical
Upper front 1.5"
3.8cm		 45°
Lower front 1.5"
3.8cm		 30°
Upper sides 1.75"
4.45cm		 0°
Lower sides 1.25"
3.18cm		 0°
Rear 1.5"
3.8cm		 9°
Ramp 1.5"
3.8cm		 8°
Top 1.5"
3.8cm		 90°
Floor 1.125"
2.858cm		 90°
M1064: Automotive
Engine General Motors 6V53T; 6 cylinder, 2 cycle, vee, turbosupercharged diesel
Horsepower Gross: 212@2,800rpm Torque Gross: 492 ft-lb@1,300rpm Fuel capacity 95gal
360L
Transmission Allison TX-100, 3 ranges forward, 1 reverse
Steering DS200 controlled differential, steering levers
Brakes Differential band
M1064: Suspension
Type Road wheels Track return rollers
Torsion bar 5 individually sprung dual/track Flat track
Drive sprockets Idlers Shock absorbers
10-tooth front drive Dual adjustable at rear of track On first, second, and last road wheels/track
M1064: Track
T130E1
Center guide, single pin, steel with detachable rubber pad
Width 15"
38cm		 Pitch 6"
15cm		 Shoes/track Left side: 63
Right side: 64		 Ground contact length 105"
267cm
T150
Center guide, double pin, steel with chevron rubber pad
Width 14.81"
37.62cm		 Pitch 6"
15cm		 Shoes/track Left side: 63
Right side: 64		 Ground contact length 105"
267cm
M1064: Performance
Max level road speed 40mph
64kph		 Max water speed 3.6mph
5.8kph
Max trench 66"
170cm		 Max grade 60%
Max sideslope 30% Max vertical obstacle 24"
61cm
Min turning diameter 26'
7.9m		 Max fording depth Floats
Cruising range ~300mi, roads
~480km, roads

M1064 was basically an M106A2 107mm self-propelled mortar carrier armed instead with a 120mm mortar. External fuel tanks were fitted to the M1064, and kits were available to convert earlier M113-based mortar carriers to M1064 standard.

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Armored Self-propelled 120mm Mortar Carrier M1064A31-2,4-5

M1064A3: General
Manufacturer FMC Corp. Crew 4 men
M1064A3: Dimensions
Combat weight 28,900lbs
13,100kg		 Height over MG 99.25"
252.1cm
Length 209.4"
531.9cm		 Gun overhang forward 0"
Width over track shrouds 105.75"
268.61cm		 Tread 85.0"
216cm
Ground clearance 17.1"
43.4cm		 Ground pressure, zero penetration 9.2psi
.65kg/cm²
M1064A3: Armament
Type Mount Ammunition Traverse Elevation
120mm Mortar M121 Passenger compartment 69 rounds With traverse extension:
1,666 mils
(808 mils left and 858 mils right; manual)
Without traverse extension:
1,486 mils
(manual)		 +1,510 mils to +800 mils
(manual)
.50cal M2HB MG Flexible on cupola mount 2,000 rounds 360°
(manual)		 Manual
Aiming equipment
Sightunit M67 or M53 for gunner
Night vision
Infrared periscope M19A1 for driver
M1064A3: Armor
Assembly
Welding
Hull
Rolled 5083/5086 H32 aluminum armor
Location Thickness Angle from vertical
Upper front 1.5"
3.8cm		 45°
Lower front 1.5"
3.8cm		 30°
Upper sides 1.75"
4.45cm		 0°
Lower sides 1.25"
3.18cm		 0°
Rear 1.5"
3.8cm		 9°
Ramp 1.5"
3.8cm		 8°
Top 1.5"
3.8cm		 90°
Floor 1.125"
2.858cm		 90°
M1064A3: Automotive
Engine General Motors 6V53T; 6 cylinder, 2 cycle, vee, turbosupercharged diesel
Horsepower Gross: 275@2,800rpm Torque Gross: 627 ft-lb@1,600rpm Fuel capacity 95gal
360L
Transmission Allison X-200-4 or X-200-4A, 4 ranges forward, 2 reverse
Steering Hydrostatic, steering yoke
Brakes Multiple plate, oil cooled
M1064A3: Suspension
Type Road wheels Track return rollers
Torsion bar 5 individually sprung dual/track Flat track
Drive sprockets Idlers Shock absorbers
10-tooth front drive Dual adjustable at rear of track On first, second, and last road wheels/track
M1064A3: Track
T130E1
Center guide, single pin, steel with detachable rubber pad
Width 15"
38cm		 Pitch 6"
15cm		 Shoes/track Left side: 63
Right side: 64		 Ground contact length 105"
267cm
T150
Center guide, double pin, steel with chevron rubber pad
Width 14.81"
37.62cm		 Pitch 6"
15cm		 Shoes/track Left side: 63
Right side: 64		 Ground contact length 105"
267cm
M1064A3: Performance
Max level road speed 40mph
64kph		 Max water speed 3.6mph
5.8kph
Max trench 66"
170cm		 Max grade 60%
Max sideslope 30% Max vertical obstacle 24"
61cm
Min turning diameter Pivot Max fording depth Floats
Cruising range ~300mi, roads
~480km, roads

M1064A3 used the RISE powerpack also found on M113A3.

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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. FM 23-90 C1 Mortars. Washington, DC: Headquarters, Department of the Army, 9 December 2002.
  3. TM 9-2350-261-10 Operator's Manual for Carrier, Personnel, Full Tracked, Armored M113A2 NSN 2350-01-068-4077, Carrier, Command Post, Light Tracked, M577A2 NSN 2350-01-068-4089, Carrier, Mortar, 120-MM, M121; Self-propelled, M1064 NSN 2350-01-338-3116, Carrier, Standardized Integrated Command Post System, M1068 NSN 2350-01-354-5657, Carrier, Smoke Generator, Full Tracked, M1059 NSN 2350-01-203-0188, Combat Vehicle, Anti-tank, Improved TOW Vehicle, M901A1 NSN 2350-01-103-5641. Washington, DC: Department of the Army, August 2005.
  4. TM 55-2350-224-14 Transport Guidance M113 Family of Vehicles (M113A2, M113A3, M106A2, M125A2, M548A1, M577A2, M667, M730A2, M741A1, M901A1, M981, M1015A1, M1059, M1064, AND M1068). Washington, DC: Department of the Army, 1 February 1993.
  5. TM 9-2350-277-10 Operator's Manual for Carrier, Personnel, Full Tracked, Armored M113A3 2350–01–219–7577 (EIC AEY), Carrier, Command Post, Light Tracked, M577A3 2350–01–369–6085 (EIC AE7), Carrier, Smoke Generator, Full Tracked, M1059A3 2350–01–369–6083 (EIC AFA), Carrier, Mortar, 120-MM, M121, Self-propelled, M1064A3 2350–01–369–6082 (EIC AE8), Carrier, Standardized Integrated Command Post System (SICPS), M1068A3 2350–01–369–6086 (EIC AFC), Carrier, Mechanized Smoke Obscurant M58 2350–01–418–6654 (EIC 5CG). Washington, DC: Department of the Army, January 2001.
  6. Federation of American Scientists. "M1064A3 Self-propelled 120mm Mortar / M106 Self-propelled 107mm Mortar." DOD 101. 22 February 2000. 21 May 2001 <http://www.fas.org/man/dod-101/sys/land/m1064.htm>. DOD 101
Last updated 17 Jan 2024.
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© Copyright 2001-24 Chris Conners