Seat Track Assembly - Servicing Guidlines
76-129Date
9/99
MODEL
1993-94 MY Sedan Range
Seat Track Assembly - Repair/Replace Guidelines
ISSUE:
The entire seat track assembly (Illustration 1) on the above vehicles does not need to be replaced when the fore/aft motors or cushion tilt motor, gearbox, or potentiometer is inoperative. These motors, gearboxes, or potentiometers are available separately from the seat track assembly. This bulletin describes under what conditions replacing the seat track assembly is not justified.
ACTION:
Do not replace the complete seat track assembly under following conditions:
^ the cushion tilt motor is damaged.
^ the potentiometer for the cushion tilt motor is damaged.
^ the transmission of the cushion tilt motor is damaged.
^ the fore/aft motor is damaged.
^ the potentiometer for the fore/aft motor is damaged.
^ the transmission shafts for the fore/aft motor are stripped.
Refer to Volume 4, Section 86, pages 86-77 to 86-88 of the XJ6-XJ12 Saloon Range Service Manual for the procedures to replace the motors and/or potentiometers. Since the cushion tilt motors come as an assembly with the gearboxes and potentiometers, (Illustration 2) the relationship between the linkage and the potentiometer is already set.
Refer to the XJ6 Sedan Range 1993/94 Electrical Guide or the XJ12 Sedan 1994 Electrical Guide for test values for the potentiometers.
Replace the complete seat track assembly only under following conditions:
^ if the track assembly is cracked.
^ if the track assembly has a broken weld.
^ if the track assembly allows excessive rocking of the seat.
PARTS INFORMATION:
DESCRIPTION PART NUMBER
Tilt (rise and fall) motor - front of cushion BEC 24321
includes gearbox, linkage, and potentiometer
Tilt (rise and fall) motor - rear of cushion BEC 24323
includes gearbox, linkage, and potentiometer
Fore/aft motor wipotentiometer JLM 1729
Recline motor wipotentiometer BEC 17787
Headrest motor wipotentiometer BEC 7135
WARRANTY INFORMATION / POLICY:
Refer to section SZ of the Warranty Codes and Repair Operations Manual Sedan Range: though 1994 MY.
Claims for replacement seat track assemblies will be rejected if the failed components can be serviced separately.