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The BW1339 added a 2.57:1 low range gearset to the BW1305, enabling 5 modes: 4WD Hi Locked, 4WD Hi Open, Neutral, 4WD Low Open, and 4WD Low Locked. The Jeep Quadra-Trac was differentiated from the open "New Process" Gear NP203 used by Dodge , General Motors , and Ford in that it included a center limited slip differential feature, in this case ...
Four-wheel drive systems include Quadra-Trac I, Quadra-Trac II, and Quadra-Drive II. Using Selec-Terrain, the driver can select modes for Auto, Sport, Snow, Sand/Mud, and Rock. Optional height-adjustable air suspension, which Jeep refers to as "Quadra-Lift", can raise the vehicle's ground clearance up to 11.1 in (282 mm). [10]
In addition to rear-wheel-drive, three different four-wheel-drive systems are available, and use a new Selec-Terrain toggle controller (the Quadra Drive II four-wheel-drive system also features the Quadra-Lift air suspension system. The Quadra-Lift system can raise or lower the vehicle to different heights, and is standard on all Trailhawk models.
Your four-wheel-drive system can do amazing things. If you know how to use it.
A six-speaker, 276-watt Boston Acoustics premium sound system also replaces the Infinity Gold system. All four-wheel-drive systems are now computer assisted for higher traction control, and a Quadra-Drive II a four-wheel-drive system is now available on most all Grand Cherokees (See other Wiki page on Quadra-Drive 2 for more accurate information).
The Commander was offered with three different four-wheel drive systems: Quadra-Trac I, Quadra-Trac II, and Quadra-Drive II. Quadra-Trac I was available on models equipped with the 3.7 L engine; it is a full-time system that requires no driver input. Quadra-Trac II was available on models equipped with a V8 engine; it is a full-time system as ...
A notable feature available in this generation was the automatic four wheel drive option called Quadra-Drive, which employed the New Venture Gear NV247 transfer case. This two-speed chain-driven transfer case uses a gerotor, a clutch pack coupled to a hydraulic pump, to transfer torque between the front and rear axles.
The 5.2 L Magnum V8 engine was available with the Quadra-Trac four-wheel drive system, which was based around an NV249 transfer case with a viscous coupler. The Quadra-Trac system was a permanent four-wheel drive system that allowed up to 60% of power to the rear wheels and a 50–50 split when loss of rear traction occurred.