105mm Howitzer Motor Carriage T191-6

T19: General
Date of first acceptance January 1942 Total acceptances 324
(90 converted to M3A1 personnel carriers)
Manufacturer Diamond T Motor Car Co. Crew
7 men:
  • Chief of section in hull right front
  • Gunner-corporal in hull left center
  • Cannoneer in hull right center
  • 2 Cannoneers in hull left rear
  • Cannoneer in hull right rear
  • Driver in hull left front
T19: Dimensions
Combat weight 20,000lbs
9100kg
Height 92"
230cm
Length 242.5"
616.0cm
Howitzer overhang forward 0"
Width over side armor 77.25"
196.2cm
Fire height 79"
200cm
Front tread 64.5"
164cm
Rear tread 63.8"
162cm
Wheelbase 135.5"
344.2cm
Ground clearance 11.2"
28.4cm
T19: Armament
Type Mount Ammunition Traverse Elevation
105mm Howitzer M2A1 Mount T2 8 rounds 40°
(20° left and right;
manual)
+35° to -5°
(manual)
.50cal M2HB MG Flexible on pedestal mount 300 rounds 360°
(manual)
Manual
T19: Armor
Assembly
Bolting
Hull
Rolled face-hardened steel
Location Thickness Angle from vertical
Howitzer shield .25"
.64cm
N/A
Radiator louvres .25"
.64cm
26°
Windshield cover .50"
1.3cm
25°
Sides .25"
.64cm
Rear .25"
.64cm
Hood top .25"
.64cm
83°
T19: Automotive
Engine White 160AX; 6 cylinder, 4 cycle, in-line gasoline
Horsepower Net: 147@3000rpm Torque Net: 325 ft-lb@1200rpm Fuel capacity 60gal
230L
Transmission Spicer 3461 constant mesh, 4 speeds forward, 1 reverse
Steering Steering wheel
T19: Suspension
Type Road wheels Track return rollers
Front: Semi-elliptic longitudinal leaf spring
Rear: Vertical volute spring
Front: Steel ventilated disc
Rear: 1 bogie/track;
4 dual/bogie
1 dual/track
Drive sprockets Idlers Shock absorbers
18-tooth front drive Adjustable fixed at rear of track On front wheels
T19: Track
Center guide band type
Width 12"
30cm
Pitch 4"
10cm
Pitches/track 58 Track ground contact length 46.75"
118.7cm
T19: Performance
Max level road speed 45mph
72kph
Max grade 60%
Max vertical obstacle 12"
30cm
Min turning diameter 59'
18m
Max fording depth 32"
81cm
Cruising range ~200mi, roads
~320km, roads

The T19 was based on the half-track M3, and was set up much like the 75mm GMC M3, with the cab roof removed and the windshield cover folding forward over the hood. The T2 mount involved using parts of the howitzer carriage M2, but incorporated some redesigns to spread the recoil force over a larger area. Nonetheless, the half-track's frame had to be strengthened to prevent sagging. A howitzer shield was fitted, and this was hinged in the middle to present a lower height when not in use. Early vehicles retained the large fender-mounted headlights.

Home       Vehicle list       Top

                     



References

  1. TM 9-710 Basic Half-Track Vehicles (White, Autocar, and Diamond T). Washington, DC: War Department, 23 February 1944.
  2. Hunnicutt, R.P. Half-Track: A History of American Semi-tracked Vehicles. Navato, CA: Presidio Press, 2001. Reprinted from Half-Track, R.P. Hunnicutt ©2001, available from Presidio Press, 505B San Martin Drive, Suite 160, Navato, CA 94945.
  3. FM 17-63 Service of the Piece, 105-mm Howitzer, Self-Propelled. Washington, DC: War Department, 18 August 1942.
  4. TM 9-1325 Ordnance Maintenance--105-mm Howitzers M2 and M2A1; Carriages M2A1 and M2A1; and Combat Vehicle Mounts M3 and M4. Washington, DC: War Department, 21 September 1944.
  5. Crismon, Fred W. U.S. Military Tracked Vehicles. Osceola, WI: Motorbooks International, 1992.
  6. Chamberlain, Peter, and Chris Ellis. British and American Tanks of World War Two. Frome, England: Cassell & Co., 2000.

Last updated 1 Sep 2015.
Questions? Comments? Corrections? Email me
© Copyright 2001-15 Chris Conners