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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 266 (Rear Drive Axle) >> Repair Instructions >> Rear Wheel Drive Shaft Flange Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
  1. Apply a small amount of lubricant to the splines of the rear wheel drive shaft flange. Adhesives, Fluids, Lubricants, and Sealers 
  2. Position the rear wheel drive shaft flange on the pinion shaft, ensuring the alignment mark is realigned.
    3. NOTE:

    Install the rear wheel drive shaft flange on the drive pinion shaft so that there are 3 to 4 threads showing.

  3. Using a brass hammer, tap the flange on the drive pinion shaft.
  4. GM5354752Courtesy of GENERAL MOTORS COMPANY

    Prepare the differential carrier pinion threads for installation as follows:

    1. Remove all traces of the adhesive patch from the mating threads using the appropriate tools.
    2. Clean the threads of the differential drive pinion gear with denatured alcohol or equivalent and allow to dry.
    3. Apply thread locking adhesive to the differential drive pinion gear threads. Adhesives, Fluids, Lubricants, and Sealers 
    4. Ensure there are no gaps in the thread locking adhesive once applied to the differential dive pinion gear threads.
  5. Install the NEW rear wheel drive shaft flange nut (1)
  6. GM5354749Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    Using the DT-45012  Holding Fixture and breaker bar with the proper size socket, tighten the NEW rear wheel drive shaft flange nut until the pinion end play is just taken up.

  7. Frequently rotate the pinion while tightening the nut to seat the bearings.
    8. NOTE:

    Compare this measurement with the rotating torque recorded during removal.

  8. Using and inch-pound torque wrench and tightening in small increments, measure the rotating torque of the pinion until the reading is +/ - 0.1 N.m (8.8 lb in) from the rotational torque measured prior to disassembly.
    9. NOTE:

    Recheck the rotating torque and adjust if necessary.

  9. Once the specified torque is obtained, rotate the pinion several times to seat the bearings.
  10. Check the fluid level of the rear drive axle. Rear Axle Lubricant Level Inspection 
  11. Propeller Shaft - Install - Propeller Shaft Replacement (without LT4) , or Propeller Shaft Replacement (with LT4, MJK) , or Propeller Shaft Replacement (with LT4, MHX) , or Propeller Shaft Replacement (AWD)
  12. Lower the vehicle.
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