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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) >> 5th Driven/6th Speed Drive Gear Installation

5th Driven/6th Speed Drive Gear 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 6th Driven Gear, Caged Needle Bearing, And Spacer
    GM1887546Courtesy of GENERAL MOTORS COMPANY
  1. Install two spacers, caged needle bearing, and 6th driven gear.
  2. Fig 2: View Of Speed Drive Gear Synchronizer Blocking Ring, Gear Friction Cone And Gear Inner Cone
    GM1887543Courtesy of GENERAL MOTORS COMPANY
  3. Install the speed drive gear inner cone, speed drive gear friction cone, and synchronizer blocking ring.
  4. Fig 3: Identifying Synchronizer Hub Assembly
    GM2178188Courtesy of GENERAL MOTORS COMPANY
  5. Install the synchronizer hub assembly (2) using J-38205-1  tube (1).
  6. Fig 4: View Of 5th/6th Shift Fork, Synchronizer Sleeve, Synchronizer Inserts, Speed Drive Gear Synchronizer Blocking Ring, Friction Cone and Inner Cone
    GM1887538Courtesy 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.

  7. Install the following components:
    • Drive gear inner cone
    • Drive gear friction cone
    • Synchronizer blocking ring
    • Synchronizer inserts
    • Synchronizer sleeve
    • 5th/6th shift fork
  8. Fig 5: Installing 5th/6th Speed Driven Gear
    GM2102305Courtesy 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.

  9. Install the 5th speed driven gear using the J-39441-30  installer (2) and J-39441-20  adapter (1). The smaller outside diameter (OD) of the gear faces down.