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Home >> Cadillac >> 2021 >> CT4 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 67 (Rear Drive Axle - Repair Instructions) >> Repair Instructions >> Differential Drive Pinion Gear Seal Replacement (LF4) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
  1. GM5900067

    Using the DT-52923  Input Shaft Seal Installer (2), install the NEW differential drive pinion gear seal (1).

  2. Apply a small amount of lubricant to the splines of the rear wheel drive shaft flange. Adhesives, Fluids, Lubricants, and Sealers
  3. GM5900058

    Position the rear wheel drive shaft flange (1) on the pinion shaft, ensuring the alignment marks are aligned.

  4. Using a brass hammer, tap the flange on the drive pinion shaft.
  5. GM5900016

    If NEW threaded components are being installed, loosen the adhesive using a metal pick or similar tool before proceeding. If threaded components are reused, prepare the threaded components using the following steps:

    1. Remove any loose cured adhesive from the external threads of the components using a lint free cloth.
    2. Thread the cleaned components into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Remove loose debris from internal and external threads using compressed air.
    4. Apply liquid thread locking adhesive in a strip along half of the length of the external threads, starting at the tip, just prior to installation. Adhesives, Fluids, Lubricants, and Sealers
  6. Install the NEW differential drive pinion gear nut (1).
  7. GM5900014

    Using the DT-45012  Pinion Flange Holder (1) and breaker bar with the proper size socket, tighten the NEW differential drive pinion gear nut (2) until the pinion end play is just taken up.

  8. Frequently rotate the pinion while tightening the differential drive pinion gear nut to seat the bearings.
    9. CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

    CAUTION:

    Refer to Fastener Caution .

    NOTE:

    Compare this measurement with the rotating torque recorded during removal.

  9. Measure the rotating torque of the pinion using an in-pound torque wrench. Continue tightening the differential drive pinion gear nut (2) until specified rotating torque is obtained. Fastener Specifications
  10. Once the specified torque is obtained, rotate the pinion several times to ensure the bearings have seated. Recheck the rotating torque and adjust if necessary.
  11. Remove the DT-45012  Pinion Flange Holder (1).
  12. GM5896793

    Install the rear wheel drive shaft (1) onto the rear axle shaft.

  13. GM5864529
    NOTE:

    The rear wheel drive shaft universal joint retainer (1) and washers (2) are serviced as a rear wheel drive shaft universal joint retainer kit consisting of 2 bolts and 1 washer.

    If NEW threaded components are being installed, loosen the adhesive using a metal pick or similar tool before proceeding. If threaded components are reused, prepare the threaded components using the following steps:

    1. Remove any loose cured adhesive from the external threads of the components using a lint free cloth.
    2. Thread the cleaned components into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Remove loose debris from internal and external threads using compressed air.
    4. Apply liquid thread locking adhesive in a strip along half of the length of the external threads, starting at the tip, just prior to installation. Adhesives, Fluids, Lubricants, and Sealers
  14. Install 3 NEW rear wheel drive shaft flange washers (2).
    15. CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

  15. Install and tighten the 6 NEW rear wheel drive shaft universal joint retainers (1) in a crisscross pattern. Fastener Specifications
  16. GM5896794

    Install the rear wheel drive shaft (1) onto the rear axle shaft.

  17. GM5864760
    NOTE:

    The rear wheel drive shaft universal joint retainer (1) and washers (2) are serviced as a rear wheel drive shaft universal joint retainer kit consisting of 2 bolts and 1 washer.

    If NEW threaded components are being installed, loosen the adhesive using a metal pick or similar tool before proceeding. If threaded components are reused, prepare the threaded components using the following steps:

    1. Remove any loose cured adhesive from the external threads of the components using a lint free cloth.
    2. Thread the cleaned components into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Remove loose debris from internal and external threads using compressed air.
    4. Apply liquid thread locking adhesive in a strip along half of the length of the external threads, starting at the tip, just prior to installation. Adhesives, Fluids, Lubricants, and Sealers
  18. Install 3 NEW rear wheel drive shaft flange washers (2).
    19. CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

  19. Install and tighten the 6 NEW rear wheel drive shaft universal joint retainers (1) in a crisscross pattern. Fastener Specifications
  20. GM5867503

    Install the propeller shaft (1) in the vehicle.

  21. GM5863691

    If NEW threaded components are being installed, loosen the adhesive using a metal pick or similar tool before proceeding. If threaded components are reused, prepare the threaded components using the following steps:

    1. Remove any loose cured adhesive from the external threads of the components using a lint free cloth.
    2. Thread the cleaned components into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Apply thread locking adhesive to the external threads of the components. Adhesives, Fluids, Lubricants, and Sealers
    4. Apply liquid thread locking adhesive in a strip along half of the length of the external threads, starting at the tip, just prior to installation.
  22. Install the 2 propeller shaft bearing support bolts (1) and tighten. Fastener Specifications
  23. GM5863695

    Align the reference mark (3) between the propeller shaft flange (1) and the rear axle pinion flange (2).

  24. GM5863697

    If NEW threaded components are being installed, loosen the adhesive using a metal pick or similar tool before proceeding. If threaded components are reused, prepare the threaded components using the following steps:

    1. Remove any loose cured adhesive from the external threads of the components using a lint free cloth.
    2. Thread the cleaned components into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Apply thread locking adhesive to the external threads of the components. Adhesives, Fluids, Lubricants, and Sealers
    4. Apply liquid thread locking adhesive in a strip along half of the length of the external threads, starting at the tip, just prior to installation.
  25. Install the 3 rear propeller shaft nuts (2) and 3 the rear propeller shaft bolts (1).
  26. Tighten the 3 the rear propeller shaft bolts (1). Fastener Specifications
  27. GM5867501

    Align the reference mark (2) between the propeller shaft flange (3) and the output flange (1) of the transmission.

  28. GM5867502

    If NEW threaded components are being installed, loosen the adhesive using a metal pick or similar tool before proceeding. If threaded components are reused, prepare the threaded components using the following steps:

    1. Remove any loose cured adhesive from the external threads of the components using a lint free cloth.
    2. Thread the cleaned components into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Apply thread locking adhesive to the external threads of the components. Adhesives, Fluids, Lubricants, and Sealers
    4. Apply liquid thread locking adhesive in a strip along half of the length of the external threads, starting at the tip, just prior to installation.
  29. Install the 3 front propeller shaft nuts (1) and the 3 front propeller shaft bolts (2).
  30. Tighten the 3 front propeller shaft bolts (1). Fastener Specifications
  31. GM5471168

    Floor Panel Number 2 Cross Bar Reinforcement (1) - Install

  32. Floor Panel Number 2 Cross Bar Reinforcement Bolt (2) - Install and tighten [4x] - Fastener Specifications
  33. GM5865888

    Exhaust Intermediate Underbody Heat Shield (2) - Install

  34. Exhaust Heat Shield Bolt (1) - Install and tighten [6x] - Fastener Specifications
  35. GM5893541

    Transmission Fluid Cooler Pipe (1) - Install

  36. GM5893545

    Retaining Clip (1) - Engage [2x]

  37. GM5893620

    Transmission Fluid Cooler Pipe (1) - Install

  38. GM5893615

    Retaining Clip (1) - Engage [2x]

  39. GM5893517

    Transmission Fluid Cooler Pipe Clip (2) - Install

  40. Transmission Fluid Cooler Pipe Clip (1) - Install
  41. Transmission Fluid Cooler Pipe Clip Bolt (3) - Install and tighten - Fastener Specifications
  42. GM5893516

    Transmission Fluid Cooler Pipe Bracket (2) - Install

  43. Transmission Fluid Cooler Pipe Bolt (1) - Install and tighten - Fastener Specifications
  44. GM5865329

    Catalytic Converter Gasket (2) - Install NEW

  45. With the aid of an assistant, install the exhaust muffler (1).
  46. GM5865300

    Exhaust Muffler Hanger Bracket Nut (1) - Install and tighten [4x] - Fastener Specifications

  47. GM5865293

    Electrical Connector (1) - Connect

  48. GM5865287

    Electrical Connector (1) - Connect

  49. GM5406632

    Exhaust Muffler (1) @ Exhaust Rear Muffler Insulator-Right Side (3) - Install

  50. Exhaust Muffler (1) @ Exhaust Intermediate Pipe Insulator-Right Side (2) - Install
  51. GM5406578

    Exhaust Muffler (1) @ Exhaust Rear Muffler Insulator-Left Side (3) - Install

  52. Exhaust Muffler (1) @ Exhaust Intermediate Pipe Insulator-Left Side (2) - Install
  53. GM5865271

    Exhaust Pipe Clamp (1) - Tighten [2x]

  54. GM5865265

    Catalytic Converter Nut (1) - Install and tighten [2x] - Fastener Specifications

  55. GM5400756

    Floor Panel Reinforcement (2) - Install

  56. Floor Panel Number 4 Cross Bar Reinforcement Bolt (1) - Install and tighten [6x] - Fastener Specifications
  57. GM5854893

    Underbody Rear Air Deflector- Left Side (5) - Install

  58. Underbody Rear Air Deflector Bolt- Left Side (4) - Install and tighten [2x] - Fastener Specifications
  59. Transmission Fluid Cooler Pipe Bracket Bolt- Left Side (3) - Install and tighten [2x] - Fastener Specifications
  60. Underbody Rear Air Deflector Nut- Left Side (2) - Install and tighten [5x] - Fastener Specifications
  61. Underbody Front Air Deflector Bolt- Left Side (1) - Install and tighten [6x] - Fastener Specifications
  62. GM5839256

    Underbody Rear Air Deflector- Right Side (5) - Install

  63. Underbody Rear Air Deflector Bolt- Right Side (4) - Install and tighten [2x] - Fastener Specifications
  64. Transmission Fluid Cooler Pipe Bracket Bolt- Right Side (3) - Install and tighten [2x] - Fastener Specifications
  65. Underbody Rear Air Deflector Nut- Right Side (2) - Install and tighten [5x] - Fastener Specifications
  66. Underbody Front Air Deflector Bolt- Right Side (1) - Install and tighten [6x] - Fastener Specifications
  67. GM5400642

    Underbody Rear Air Deflector- Right Side (5) - Install

  68. Underbody Rear Air Deflector Nut (3) - Install and tighten [3x] - Fastener Specifications
  69. Underbody Rear Air Deflector Bolt (2) - Install and tighten [3x] - Fastener Specifications
  70. Underbody Rear Air Deflector Nut (4) - Install and tighten [2x] - Fastener Specifications
  71. Rear Wheelhouse Liner Bolt (1) - Install and tighten - Fastener Specifications
  72. GM5471237

    Rear Tire Front Air Deflector- Right Side (1) - Install

  73. Rear Tire Front Air Deflector Bolt (2) - Install and tighten [2x] - Fastener Specifications
  74. GM5400553

    Underbody Rear Air Deflector- Left Side (5) - Install

  75. Underbody Rear Air Deflector Nut (2) - Install and tighten [3x] - Fastener Specifications
  76. Underbody Rear Air Deflector Bolt (3) - Install and tighten [3x] - Fastener Specifications
  77. Underbody Rear Air Deflector Nut (4) - Install and tighten [2x] - Fastener Specifications
  78. Rear Wheelhouse Liner Bolt (1) - Install and tighten - Fastener Specifications
  79. GM5395705

    Rear Tire Front Air Deflector- Left Side (2) - Install

  80. Rear Tire Front Air Deflector Bolt (1) - Install and tighten [2x] - Fastener Specifications
  81. Inspect the exhaust system for leaks.
  82. Remove the support and lower the vehicle.
  83. Check the transmission fluid level. Transmission Fluid Level and Condition Check
  84. Inspect for transmission fluid leaks. Fluid Leak Diagnosis
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