Manual transmissions • 1984: Borg-Warner
T-4 four-speed
manual, used with 2.5 L I4 only, 21 spline output • 1984–1987: Aisin-Warner
AX4 four-speed manual, used with 2.5 L I4 only, 21 spline output • 1984: Borg-Warner
T-5 five-speed manual, used with 2.5 L I4 and 2.8 L V6, 21 spline output • 1984–2000: Aisin-Warner
AX5 five-speed manual, used with 2.5 L I4, 2.1 L I4 diesel, and 2.8 L V6, 21 spline output • 1987–Mid-1989: Peugeot
BA-10/5 five-speed manual used with 4.0 L I6, 21 spline output • Late 1989–1999: Aisin-Warner
AX15 five-speed manual, used with 2.5 L I4 diesel, 4.0 L I6, 23 spline output • 2000–2001: New Venture Gear
NV3550 five-speed manual, used with 2.5 L I4 diesel, 4.0 L I6, 23 spline output
Automatic transmissions • 1984–1986: Chrysler
A904 three-speed
automatic, used with 2.5 L I4 and 2.8 L V6 • 1987–2001: Aisin-Warner
AW-4 four-speed automatic, used with 4.0 L I6 • 1994–2000: Chrysler
30RH three-speed automatic, used with 2.5 L I4
Transfer cases All the
transfer cases used on the Cherokee were chain-driven two-speed units with aluminum housings. Command-Trac was standard on XJ models built with 4WD.
Axles The Jeep XJ utilizes front and rear
beam axle components (live axles) as opposed to an
independent suspension. The live axle configuration offers advantages in off-road capability and performance at the expense of some on-road comfort and driveability. Mid-1985 and later two-wheel drive models used the same suspension and steering mechanisms with a single tube connecting axle ends, which also meant no transfer case, no front driveshaft, and no front differential.
Front axle • 1984–1996:
Dana 30, high pinion, reverse cut, 27-spline axle shafts (1989 – 1995: with ABS used 5-297x universal joints, non-ABS had 5-260x universal joints. NP228/229 "Selec-Trac" equipped XJ models were also produced with
constant-velocity joints instead of
universal joints.) • 1996–1999: Dana 30, high pinion, reverse cut, 297x/760 universal joint, 27-spline axle shafts • 2000–2001: Dana 30, low pinion, standard cut, 297x/760 universal joint, 27-spline axle shafts • 1985–2001: straight non-driven front axle for two-wheel drive only
Rear axle • 1984–1989:
Dana 35, non c-clip, with
anti-lock braking system (ABS) or non-ABS; dana 44 on some models • 1987–1991:
Dana 44, models w/tow package only, 30-spline axle shafts, non-ABS • 1990–1996: Dana 35, c-clip, ABS or non-ABS • 1997–2001: Dana 35, c-clip, ABS • 1991–1996: Chrysler 8.25", c-clip, non-ABS, 27-spline axle shafts • Late 1996–2001: Chrysler 8.25", c-clip, non-ABS, 29-spline axle shafts
Axle gear ratios Jeep XJs came in several standard gearing ratios: • 3.07:1, manual transmission, I6 engine. • 3.54:1, automatic transmission, I6 engine with
Dana 44 rear differential • 3.54:1, manual transmission, I4 engine with Dana 35 rear differential • 3.55:1, automatic transmission, I6, inline 6 engines; manual transmission, I4 engine • 3.73:1, automatic transmission, I6, tow package, UpCountry package, 2.5 VM diesel manual • 4.10:1, 2.5L I4 engine, early models with tow package • 4.56:1, automatic transmission, I4, off-road or tow package
Suspension The Jeep XJ utilizes a coil spring with a separate shock absorber front suspension and a leaf spring with a separate shock absorber rear suspension.
Front suspension The Quadra-Link front suspension design locates the axle with four leading control arms to control longitudinal movement and rotation about the lateral axis (drive and braking reaction), two above the axle and two below it. A
panhard rod, also referred to as a track bar, is used to locate the axle laterally. Two coil springs are seated on top of the axle housing, as well as two gas-charged shock absorbers. The suspension used on vehicles with the optional UpCountry package provided one inch of lift over the standard suspension. A
sway bar is utilized to reduce body roll in turns.
Rear suspension The XJ uses a leaf spring rear suspension. Each leaf pack contains four leaf springs with a fixed eye at the front of the spring and a compression-style shackle at the rear of the spring. Two gas-charged shock absorbers are also used, along with a mild anti-sway/anti-roll bar. The suspension used on vehicles with the optional UpCountry package did not include the rear anti-sway/anti-roll bar, but provided a one-inch lift over the standard suspension. ==XJ in Europe==