SERVICE MANUAL UPDATE SEC. 7A TRANSAXLE REMOVAL/INSTALLATION

SUBJECT: SERVICE MANUAL UPDATE - SECTION 7A - REVISED PROCEDURE FOR TRANSAXLE REMOVAL AND INSTALLATION

MODELS AFFECTED: 1989-90 RIVIERA AND REATTA MODELS

THE FOLLOWING PROCEDURE REPLACES THE ONE THAT APPEARS IN THE 1989-90 RIVIERA/REATTA SERVICE MANUAL.

4T60 TRANSAXLE

Figures 1 through 4 Tools Required: J 28467-A support Fixture

Remove or Disconnect

1. Negative battery cable. 2. Air intake duct. 3. Install support fixture J 28467-A.

IMPORTANT: It is necessary to "load" the support fixture by tightening the wing-nuts several turns to relieve tension on the frame and mounts.

4. Upper bolts from left transaxle mount bracket, nuts from bracket to mount. 5. Cruise control servo. 6. Raise vehicle and suitably support. Refer to Section 0A. 7. Transaxle cooler line bracket. 8. Lower bolts on left transaxle bracket. 9. Lower vehicle. 10. Exhaust crossover pipe shield. 11. Exhaust crossover pipe. 12. Vacuum modulator 13. Left transaxle bracket. 14. TV cable at transaxle. 15. Shift control lever at transaxle. 16. Electrical connector at neutral start switch, speed sensor. 17. Engine to transaxle top bolts. 18. Raise vehicle and suitably support. Refer to Section 0A.

CAUTION:

To help avoid personal injury when a vehicle is on a hoist, provide additional support for the vehicle at the opposite end from which components are being removed. This will reduce the possibility of the vehicle falling off the hoist.

19. Front wheels. 20. Left and right ball joint nuts. 21. Separate ball joints from steering knuckle. Refer to Section 3C.

NOTICE: Drive axle seal protector J 34754 should be modified and installed on any drive axle prior to service procedures on or near the drive axle. Failure to observe this can result in seal damage and possible joint failure. Refer to Section 4D for information on tool J 34754 and for proper drive axle removal and handling procedures.

22. Right and left drive axle from transaxle.

IMPORTANT: Carefully guide output shaft past lip seal. Do not allow shaft splines to contact any portion of lip seal surface, otherwise damage to the seal will occur.

23. Right transaxle to mount brackets. 24. Left stabilizer bolt from control arm. 25. Flywheel cover. 26. Flywheel to converter bolts.

IMPORTANT: Mark flywheel to converter relationship to ensure proper reassembly.

27. Transaxle cooler lines from transaxle. 28. Air conditioning compressor shield. 29. Rear frame to dogleg bolts. 30. Front left frame to body bolt. 31. Front frame to dogleg bolts. 32. Frame assembly. 33. Install transaxle support fixture into position. 34. Engine to transaxle lower bolts.

IMPORTANT: One bolt is located between the transaxle case and the engine block and is installed in the opposite direction.

35. Separate and lower transaxle assembly from vehicle.

INSTALL OR CONNECT

To complete installation, observe the following assembly tips and reverse the removal procedures.

Assembly Tips

o Use care when installing right side drive axle into the transaxle case. The splined shaft can easily damage the seal.

IMPORTANT: Before installing right side drive axle, be sure to install tool J 37292-A axle seal protector. Refer to Section 4D.

o Line up the flywheel to torque converter marks made at disassembly.

o Torque converter to flywheel bolts should be tightened twice. The final torque should be 62 N.m (46 lbs. ft.).

o Check adjustment of the shift cable and TV cable. Readjust as needed.

o Check and adjust the fluid level as needed.

o Road test and check for leaks.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.