M151 MUTT (Military Utility Tactical Truck) 4x4 Multi-Purpose Light Utility Vehicle (1960)
The M151 MUTT multi-purpose light vehicle replaced the Korean War-era M38 series Jeeps.
Prior to the adoption of the ubiquitous HUMVEE multi-purpose 4x4 vehicle, the US military relied on the world renowned "Jeep" emerging from the fighting of World War 2 (1939-1945). The original design came about from the engineers at Bantam to which then the US Army opened prototyping to include both Willys-Overland and Ford Motor Company using the original Bantam work. The Willys MB was accepted for service in 1941 and its history was all but assured. The vehicle then grew into a myriad of battlefield roles and was shipped to far off places in the world through direct export and Lend-Lease. Overall, some 634,000 examples were produced through a combined Willys/Ford effort. While the vehicle certainly played its role well, it was not the final solution in the US military light 4x4 vehicle requirement. When an improved form was sought, Willys-Overland delivered the post-war M38 series, by this time officially trademarking the "Jeep" name. A limited force of these vehicles managed service in the Korean War (1950-1953) though they were largely still outnumbered by World War 2-era variants. The M38 existed through the base M38 and improved M38A1 with production exceeding 160,000 units.
Still searching for a better multirole 4x4 solution, the US Army gave thought to yet another light truck requirement which fell to Ford in 1951. Ford engineers returned with what would become the official successor to the M38 line - marking the end of the World War 2-related Jeeps. The Ford submission was designated in US military nomenclature as the M151 to which the further technical acronym of "Military Utility Tactical Truck" (MUTT) was given. Despite its clear Willys MB/M38 influence, the vehicle proved something of a large departure from the wartime Jeep.
The M151 was specifically classed as a "1/4-ton light tactical truck" and powered by a 71-horsepower Ordnance Continental 4-cylinder, gasoline-fueled engine. This was mated to a 4-speed (1 reverse) transmission system. Dimensions included a length of 133 inches, width of 64 inches and height of 64 inches. The engine was fitted to the front of the vehicle in a conventional automobile arrangement. Body construction utilized a monocoque steel body/frame approach unlike the separate steel tubing / steel frame approach to the Willys series and promoted more internal space, a higher ground clearance and lower center mass. Rounded inlaid headlamps continued the "Jeep" appearance though, the MUTT being a Ford-centric product, the grill was comprised of horizontal slats instead of the trademarked vertical lines of the Willys product. The wheels were set at the extreme corners of the frame. The driver sat at center-left with a passenger at center-right. The forward windscreen, as in earlier Jeeps, could be collapsed over the hood to provide unfettered access for long-barreled weapons such as recoilless rifles or similar. Additional passengers could be transported across bench seating at the rear or they replaced by supplies and equipment.
The MUTT departed from conventional Jeep design in one major way - its use of independent suspension unlike the original's solid axle arrangement. The new system allowed for better cross-country performance and, coupled to the stronger engine - improved performance across the board. However, these changes came at a price - it was later found that M151s were considerably more prone to rollover accidents when taking turns at speed or under heavy mission loads. The primary culprit was found to be the rear wheels which tended to slide under the frame during such actions, leading to rather lethal circumstances that followed. As many drivers were conditioned to the more rigid driving qualities of their Willys MB and M38 models, it made for a more attentive experience when attempting to control the newer M151. It was this rollover issue that prevented the M151's civilian sale - unlike previous Jeep lines.
Specifications for the
M151 MUTT (Military Utility Tactical Truck)
4x4 Multi-Purpose Light Utility Vehicle
Country of Origin: United States
Manufacturer: Ford / Kaiser/ AM General Corporation / GM - USA
Initial Year of Service: 1960
Focus Model: M151 MUTT (Military Utility Tactical Truck)
Crew: 1 + 3
Overall Length: 11.06 ft (3.37 m)
Width: 5.91 ft (1.80 m)
Height: 6.17 ft (1.88 m)
Weight: 1.2 US Short Tons (1,110 kg; 2,447 lb)
Powerplant: 1 x Ordnance Continental 4-cylinder gasoline engine generating 71 horsepower @ 4,000rpm.
Maximum Speed: 65 mph (105 km/h)
Maximum Range: 273 miles (440 km)
NBC Protection: None
Mission Specific. Can include the following:
1 x 12.7mm Browning M2 Heavy Machine Gun (HMG)
1 x 7.62mm M240G General Purpose Machine Gun (GPMG).
1 x TOW-2 Anti-Tank Guided Missile (ATGM) launcher
1 x Recoilless Rifle or similar
Also any personal weapons carried by the crew.
Depedent on armament.
2 x 149mm TOW anti-tank missile
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