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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1035 (Automatic Transmission - ALLISON - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Off-Vehicle Repair Information >> 3rd, 5th and Reverse Clutch Installation >> Installation

3rd, 5th and Reverse Clutch Installation: Installation

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of 3rd, 5th, And Reverse Clutch Piston Assembly
    GM1216965Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Do not reuse the old 3rd, 5th, and reverse clutch piston assembly. Install a new 3rd, 5th, and reverse clutch piston assembly.
  1. Position the transmission case so that the front of the case is facing up.
  2. Apply J 36850  to the inside diameter and outside diameter of the new 3rd, 5th, and reverse clutch piston assembly (1). See Special Tools .
  3. Align the new 3rd, 5th, and reverse clutch piston assembly (1) with the transmission case so that the seal is facing down and the 1.016 mm (0.040 in) lubrication/cooling orifice is at the top of the transmission case.
  4. Install the 3rd, 5th, and reverse clutch piston assembly.
  5. Gently tap the piston until the piston seats.
    6. Fig 2: Piston Return Spring Assemblies
    GM1660836Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The spring assemblies can be reused. If required, squeeze the spring assembly tabs with pliers to make sure the spring assemblies are retained to the spring plate. When correctly adjusted, the piston return spring assemblies snap into place.
  6. Install 3 piston return spring assemblies (1) onto the 3rd, 5th, and reverse spring plate (2).
    7. Fig 3: View Of 3rd, 5th And Reverse Spring Plates, Steel Plates & Spring Assemblies
    GM1216960Courtesy of GENERAL MOTORS CORP.
  7. Align the 3rd, 5th and reverse spring plate (4) and piston return spring assemblies (3) so that the spring assemblies face up.
  8. Install the spring plate (4) into the transmission case.
  9. Starting with a 3rd, 5th, and reverse clutch fiber plate, alternately install four 3rd, 5th, and reverse clutch fiber plates (1) and three 3rd, 5th, and reverse clutch steel plates (2) into the transmission case.
    10. Fig 4: Aligning 3rd, 5th, And Reverse Clutch Backing Plate Assembly
    GM1216962Courtesy of GENERAL MOTORS CORP.
  10. Align the 3rd, 5th, and reverse clutch backing plate assembly (1) with gear thrust plates (2) down.
  11. Install the 3rd, 5th, and reverse clutch backing plate assembly (1) into the transmission case.
    12. Fig 5: Compressing 3rd, 5th, And Reverse Piston Return Spring Assemblies
    GM1216959Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to 3-5 Reverse Clutch Backing Plate Rivet Damage Notice .
  12. Install J 24204-2  (1) and J 44530  (2) into the transmission case. See Special Tools . Make sure J 44530  does not touch the gear thrust plate rivets (3) on the 3rd, 5th, and reverse clutch backing plate assembly. See Special Tools .
  13. Compress the 3rd, 5th, and reverse piston return spring assemblies (5) until the retaining ring groove is visible.
  14. Install the retaining ring (4).
  15. Make sure the retaining ring is seated.
  16. Remove J 24204-2  and J 44530  . See Special Tools .
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