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Most trucks had gasoline (G) engines until the early 1960s, when multifuel (M) and diesel (D) engines were introduced. Since then diesel fuel has increasingly been used, the last gasoline engine vehicles were built in 1985. Most engines have been water-cooled with inline (I) cylinders, but V types (V) and opposed (O) engines have also been used.
In 1965 CONDEC began building 3188 diesel powered M123A, Mack began building 420 in 1968. In 1969 Mack then upgraded 210 gas engine models to diesel power. With the Army using more self‑propelled artillery, the need for prime movers was reduced, no follow‑up orders for M125 were made. Both M123 and M125 saw service in the Vietnam War.
The Mack R series (also known as the Mack Model R) is a series of trucks that was manufactured by Mack Trucks from 1966 to 2005. The successor of the Mack B series , [ 2 ] the R was a heavy-duty truck (Class 8) with a conventional (bonneted) cab configuration.
Over a period of time, Detroit Diesel continued to further evolve the design of the engine. They finally brought the engine up to 137.5 hp (102.5 kW) per cylinder and 406 lb⋅ft (550 N⋅m) torque per cylinder; needless to say, this is a considerable amount of power coming from 149 cu in (2.4 L) per cylinder.
United States Army Air Forces Modification Centers were World War II facilities at which military aircraft underwent post-production changes in order to modify or install equipment needed for specific roles or theaters of operation.
Unit pumps on Mack's E7 diesel engine Unit pumps on Mercedes OM906LA engine. The Unit Pump system [1] is a modular high-pressure diesel injection system, which is closely related to the unit Injector system, and is designed for use in commercial vehicle diesel engines.
Evansville is a city in Rock County, Wisconsin, United States. The population was 5,703 at the 2020 census. [ 3 ] Evansville is a part of the Janesville - Beloit Metropolitan Statistical Area and the Madison-Janesville-Beloit CSA .
Later used by Ford as a parts and vehicle dist. center. Used by the US Army as a warehouse during WWII. After the war, was used as a parts and vehicle dist. center by a Ford dealer, Capital City Ford of Baton Rouge. Used by Southern Service Co. to prepare Toyotas and Mazdas prior to their delivery into Midwestern markets from 1971 to 1977.