The Tractor, High Speed, 13-ton, M5 was designed as a prime mover for towing large field artillery guns such as the 90mm Anti-Aircraft gun, the 155mm Long Tom, the 8in. Howitzer, or other heavy weapons (See the Towed Artillery Chart). In addition to moving the gun, the M-5 High Speed Tractor carried the gun crew plus ammunition in cargo space racks.
The M5 High Speed Tractor (HST) was standardized in October 1942 and manufactured by International Harvester from May 1943 through May 1945 when the M5A1 superseded it. The main distinction of the M5A1 vs M5 was an enclosed cab similar in style to the M4 High Speed Tractor.
The M5A2 and M5A3 were M5 and M5A1 units with upgraded suspension systems, produced after World War II. The original vertical volute springs (from the M3 Stuart light tank) were changed to a horizontal volute design, since vertical volute springs cannot be satisfactorily damped. The M5A4 is equivalent to the M5A2 but with additional storage capacity in cabinets that run along both sides above the tracks.
Characteristics of the M-5 High Speed Tractor (G162)
All models of the M-5 High Speed Tractor share these characteristics:>
Engine: Continental R6572 207hp inline 6 cyl
Transmission with 4 forward speeds
Dual range clutch gear reduction unit
Maximum towed load: 20,000 lbs
Turning radius: 20 feet
Fuel capacity: 100 gallons
Fording depth: 53 inches
Cruising range: 150 miles
Maximum speed: 30 mph
Ground Clearance: 19.75 inches
Air and electric brakes to match brakes on the towed load