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The successor to the 1940-1956 Mack L series, [2] the B-series was a line of heavy conventional-cab trucks. Adopting a more streamlined appearance over its predecessor, the B-series was designed with a sloped windshield and larger, rounded fenders [ 1 ] The model line was sold in multiple configurations, including tractors and straight/rigid ...
Mack built 392 M123s, used with a lowboy trailer to recover and transport tanks, and all 552 M125s, between 1955 and 1957. Later follow-up orders called for 420 M123A1s with a Cummins V8-300 785 cu in (12.9 L) naturally aspirated V8 diesel engine developing 300 hp (220 kW) at 3000 rpm and 580 lbf⋅ft (786 N⋅m) torque at 2100 rpm.
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.
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. Three air-cooled engines were used in two very light trucks.
Early M123 had a larger fifth wheel mounted above the frame rails, but as more standard trailers were used, the M123C and all following models had lowered fifth wheels. The pin remained larger, so any trailer towed by any M123 had to have an interchangeable pin. [3] A standardized REO designed cab, also used in the 2 1/2 and 5‑ton trucks, was ...
The M39 series was the primary heavy truck of the U.S. Army and U.S. Marine forces during the Vietnam War, and was also used by the U.S. Navy, U.S. Air Force, and ARVN forces. [2] The M39 series began to be replaced by the M809 series in 1970, followed by the M939 series in 1982, but continues to serve in other nations' armed forces around the ...
The Granite is available with two Mack diesels, a Cummins diesel, and a Cummins Westport natural gas engine. [1] Between 2001 and 2005 an earlier generation Mack diesel was used. [2] The Mack MP7 is the base engine in the Granite. It is a 659 cubic inches (10.8 L) overhead cam turbocharged inline six-cylinder diesel engine. It develops 325 to ...
The B61 nuclear bomb is the primary thermonuclear gravity bomb in the United States Enduring Stockpile following the end of the Cold War.It is a low-to-intermediate yield strategic and tactical nuclear weapon featuring a two-stage radiation implosion design.