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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 85 (Manual Transmission - TREMEC 6-Speed (Mg9 M3L)) >> Repair Instructions - Off Vehicle >> Transmission Assemble (MG9) >> Reverse Shift Fork Installation

Reverse Shift Fork Installation

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of 5th/6th Speed Shift Fork Retainer Ring
    GM1887535Courtesy of GENERAL MOTORS COMPANY
  1. Install the 5th/6th speed shift fork retainer ring.
    2. Fig 2: View Of Retainer Clip & Countershaft
    GM1887537Courtesy of GENERAL MOTORS COMPANY
  2. Install the retainer clip to the countershaft.
    3. Fig 3: View of Spacer & Countershaft
    GM1887536Courtesy of GENERAL MOTORS COMPANY
  3. Install the spacer to the countershaft.
    4. Fig 4: View of Needle Bearing & Countershaft
    GM1887534Courtesy of GENERAL MOTORS COMPANY
  4. Install the needle bearing to the countershaft.
    5. Fig 5: View Of Gear & Countershaft
    GM1887533Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    If any of the following components are damaged or replaced. (5th Drive Gear, 5th gear blocking rings, 5th / 6th gear synchronizer assembly) Then they must ALL be replaced as a set. All parts in the replacement kit must be used.

  5. Install the gear to the countershaft.
    6. Fig 6: View Of Countershaft Retainer And Spacer
    GM1887531Courtesy of GENERAL MOTORS COMPANY
  6. Install the countershaft retainer and spacer.
    7. Fig 7: Identifying Countershaft Gear
    GM2178189Courtesy of GENERAL MOTORS COMPANY
  7. Install the countershaft gear (1).
    8. Fig 8: View Of Countershaft Retainer Clip
    GM1887622Courtesy of GENERAL MOTORS COMPANY
  8. Install the countershaft retainer ring.
    9. Fig 9: Identifying Reverse Synchronizer Components
    GM2102207Courtesy of GENERAL MOTORS COMPANY
  9. Install the two piece thrust washer (3).
  10. Install the locking ring (2).
  11. Install the reverse shift fork and the synchronizer (1).
    12. Fig 10: Identifying Reverse Retainer Rings
    GM2102206Courtesy of GENERAL MOTORS COMPANY
  12. Install a NEW shift fork retainer ring (2).
  13. Install the reverse synchronizer retainer ring (1).
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