![]() Driving in 4WD on dry pavement causes excessive tire and drivetrain wear. Command-Trac should only be driven in 4WD on low-traction surfaces due to the front and rear axles being locked together (no differential action in the transfer case). The "shift-on-the-fly" feature provides manual ease and assist while engaging 4WD. The system offers a chain-driven, aluminum, "shift-on-the-fly" transfer case. More commonly, Command-Trac is used to refer to the NP/NV-231 or NP-207 transfer cases introduced along with the Jeep Cherokee (XJ) in 1984. The NP208 was used through at least 1987. ![]() The 4WD modes are not for use on high-traction surfaces such as dry roads. ![]() The drive modes are the same as with the Dana 18 and 20 transfer cases: 2Hi, 4HI PT, and 4LO PT. Command-Trac Command-Trac Ĭommand-Trac was first introduced using the NP208 transfer case in the full-size Jeeps (SJ series) in 1980.
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