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Old 03-23-2015, 11:31 AM   #2
79LilRedExpress
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Join Date: May 2008
Posts: 713
Default M151 mutt

Since World War II the US military has relied on the "Jeep" to get it through the mud and to the front line. There were many incarnations of it, the last being the trusty "Mutt" that was first used in Vietnam and only recently retired in the early 1990s. The U.S. Air Force used it as a mode of transport for its important forward air controllers, who helped call in pinpoint air strikes on enemy positions.


History

The M151 Mutt (Military Unit Tactical Truck) replaced the M38A1. It was designed by Ford and later built by Kaiser, AM General Corporation, and GM. In 1951 the Ford Motor Company was given a contract to develop a Military Utility Tactical Truck (MUTT) to replace the WWII era MB Jeep and it's descendant the M38. A production contract was awarded in 1960 for the 1st of over 10,000 units that would be used by all US and many foreign military forces.
M151 Mutt


Tested and prototyped by Ford through most of the fifties, the M151 MUTT ("Military Unit Tactical Truck") went into production in 1959 and became the principal combat Jeep of the Vietnam era.

Production of the M151 continued for just a short time when the M151A1 was introduced with modifications to carry heavier loads. In 1969 the M151A2 was introduced to try and correct a serious problem with the suspension that made the M151 unstable and susceptible to roll-over in tight cornering situations due to the central articulation of the suspension arms, the lowering of one wheel relative to the frame would make the wheel move inward, effectively over-steering the vehicle and causing it to abruptly overturn. This was corrected by the integration of an 'A' arm with coil spring to each wheel. The M151 and the M151A1 have the pivots on the inside of the wheel. The M151A2 changed the rear A arms to pivot front to back. This greatly reduced the tendency to roll over during a high speed turn.


M151 Mutt Rear Suspension
Additional contributing factors to the tendency to roll over that where suggested was the vehicle having been designed for OFF ROAD USE as its primary mission. The tires used by U.S. and many allied forces, are of the Non-Directional Tread (NDT) type. Simply stated this means there is no specific tread pattern - the tire is made for gripping soft soil or wet unimproved surfaces. Operators of the M151 displayed a propensity for application of civilian automobile handling

characteristics in their driving habits but in fact were using a primarily off road vehicle with no tread on the tires.

The M151A2 was born and was raised in the militia, and it is always ready for the action. Form part of the series of military vehicles 4X4 more versatile of the fact that is had. And must be it, since it manufactures it AM General with their more than 40 military experience years. The M151 series has, as norm equipment, an electrical system of 24 volts that it is waterproof, hermetical to the powder and suppressive has of interferences of radio waves. Permit to ford until a depth of 1.5 meters.
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