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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 198 (Manual Transmission - TREMEC 6-Speed (M3L Mg9)) >> Repair Instructions - Off Vehicle >> Main Shaft and Input Shaft Assemble (MG9) >> 2nd Speed Drive Gear Installation

2nd Speed Drive Gear Installation

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: 2nd Speed Drive Gear Components
GM3212468Courtesy of GENERAL MOTORS COMPANY
2nd Speed Drive Gear Installation

Callout Component Name
1 2nd Speed Drive Gear Needle Bearing
2 2nd Speed Drive Gear Bearing Spacer
3 2nd Speed Drive Gear
4 2nd Speed Drive Gear Inner Cone
5 2nd Speed Drive Gear Friction Cone
6 2nd Speed Drive Gear Synchronizer Blocking Ring
NOTE:

Ensure the tabs on the blocking ring align with the corresponding pockets in the synchronizer hub.

7 1st/2nd Synchronizer Assembly
NOTE:
  • Check the 1st/2nd synchronizer assembly scribe marks for correct position.
  • The scribe "2.N.D." must face 2nd speed gear.

Procedure

  1. Start the hydraulic press operation.
  2. STOP pressing before the keys engage the blocking ring slots.
  3. Lift and rotate the 2nd speed gear in order to engage the keys with the blocking ring.
  4. Continue pressing until the synchronizer is seated.

Special Tools 
J-39371  1st/2nd Synchronizer Installer
For equivalent regional tools, refer to Special Tools .