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The Caterpillar 3126 is a turbocharged 7.2L inline 6-cylinder diesel engine manufactured by Caterpillar and first introduced in 1995; it was the first electronic mid-range diesel engine that Caterpillar produced. [1] It is the successor to the Caterpillar 3116 engine and was updated to become the Caterpillar C7 engine in 2003. [1]
At their launch, the F-650 and F-750 were available with the Caterpillar 3126 (replaced by the C7) 7.2L inline-six, the Cummins ISB 5.9L inline-six, and the Navistar-produced Ford-branded 7.3L Power Stroke V8 engine. The 6.0L Power Stroke replaced the aging (and no longer compliant with California noise regulations) 7.3L for the 2004 model year.
Caterpillar (CAT) C7, 7.2-liter, 6-cylinder inline water-cooled diesel developing 275 hp (EPA 2007) Payload capacity: rated at 2.5 U.S. tons: Transmission: Allison 3700 SP 7-speed automatic with integral single speed transfer case: Suspension: Parabolic tapered leaf springs and telescopic shock-absorbers: Fuel capacity: 212 litres (56 US Gallons)
For the C6500 and larger, diesel engines were standard, with an Isuzu-produced Duramax LG4 7.8L I6 as standard, with a 7.2L Caterpillar C7 (a redesigned 3126) offered as an option. [ 12 ] Isuzu H-Series
[citation needed] Because of obsolescence concerns, the Caterpillar 3126 engine was recently replaced by a Caterpillar C7 engine and the Allison 3200SP transmission. [61] Pneumatic or hydraulic systems drive almost all of the vehicle's mechanical features. For example, a pneumatic system switches between 8×4 and 8×8 drive. [citation needed]
In the late 1930s the US Army began setting requirements for custom built tactical trucks, winning designs would be built in quantity. As demand increased during WWII some standardized designs were built by other manufactures.
In 2007, as ultra-low-sulfur diesel became required in North America, Caterpillar updated the C7 to use common rail fuel injectors and improved ACERT electronics. [122] [123] In 1998 Caterpillar purchased Perkins Engines of Peterborough, England, a maker of small diesel and gasoline engines. Perkins engines are used in various applications.
The ISC was introduced in 1998 and used a CAPS electronically controlled injection system along with a 24 valve head, vs 12 valves on the 6C8.3. By late 2003, Cummins announced that they will revise the engine to sport a High-Pressure Common-Rail (HPCR) system to help with emissions and also a variable geometry turbocharger system to help with ...