Flame Thrower Service Unit Vehicle XM45E11-3

XM45E1: General
Total Acceptances 28
XM45E1: Dimensions
Tread 85.0"
XM45E1: Armament
Type Mount Traverse Elevation
.50cal M2HB MG M49A1 or M66 ring mount above cab 360°
XM45E1: Armor
Thickness .25"
XM45E1: Automotive
Engine General Motors 6V53; 6 cylinder, 2 cycle, vee diesel
Horsepower Gross: 212@2800rpm Torque Gross: 492 ft-lb@1300rpm
Transmission Allison TX-100, 3 ranges forward, 1 reverse
Steering DS200 controlled differential, steering levers
Brakes Differential band
XM45E1: 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 and last road wheels/track
XM45E1: Track
Center guide, single pin, steel with detachable rubber pad
Width 15"
Pitch 6"
Shoes/track Left side: 63
Right side: 64
Ground contact length 111"
XM45E1: Performance
Max fording depth Floats

The XM45E1 was based on the cargo carrier M548, and was intended to refuel both mechanized and man-portable flamethrowers. Armor was bolted to the cab and hull, and 2.25"- (5.72cm-) thick glass was installed to protect the windshield, door windows, and headlights. The vehicle could mix fuel with thickener and then pump both the mixture and compressed air into the tanks of waiting flame throwers. In the cargo compartment, two rectangular fuel storage tanks flanked a central circular mixing tank, and the air compressor was located to the mixing tank's front. A power takeoff operated the air compressor, and the vehicle engine cooling system was designed to preheat and cool the compressor and heat the mixing tank when required. The air systems were designed for a pressure of 3000±200psig and a maximum rate of 50cfm, and 2000±100psig. The XM45E1 was sent to Vietnam in 1968 with the 11th Armored Cavalry Regiment and notably worked alongside the self-propelled flame thrower carrier M132 series.

Home       Vehicle list       Top



  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. MIL-S-51261A(MU) Military Specification Service Unit, Flame Thrower, Track Vehicle Mounted, XM45E1. 28 Jan 1970.

Last updated 11 Nov 2020.
Questions? Comments? Corrections? Email me
© Copyright 2020 Chris Conners