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Home >> Buick >> 2018 >> Envision Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Power Transfer Unit/Transfer Case - AAM >> Repair Instructions - Off Vehicle >> Power Transfer Unit Case Disassemble >> Power Transfer Unit Alignment Sleeve, Face Seal, Input Shaft Bearing Race, Idler Gear Bearing Race and Shim, and Idler Gear Shaft Tube Seal Removal

Power Transfer Unit Alignment Sleeve, Face Seal, Input Shaft Bearing Race, Idler Gear Bearing Race and Shim, and Idler Gear Shaft Tube Seal Removal

Fig 1: Exploded View Of Power Transfer Unit Alignment Sleeve, Face Seal, Input Shaft Bearing Race, Idler Gear Bearing Race And Shim, And Idler Gear Shaft Tube Seal Components
GM3793536Courtesy of GENERAL MOTORS COMPANY
Power Transfer Unit Alignment Sleeve, Face Seal, Input Shaft Bearing Race, Idler Gear Bearing Race and Shim, and Idler Gear Shaft Tube Seal Removal

Callout Component Name
1 Power Transfer Unit Input Shaft Bearing Race - Front
NOTE:

The bearing races are not an interference fit to the housing bore.

2 Power Transfer Unit Input Shaft Seal - Front
NOTE:

Remove and DISCARD the seal.

Special Tools

  • DT-26941  Bushing and Bearing Remover
  • DT-45124  Removal Bridge

Equivalent regional tools: Refer to Special Tools .
3 Power Transfer Unit Idler Gear Bearing Race - Front
NOTE:

The bearing races are not an interference fit to the housing bore.

4 Power Transfer Unit Idler Gear Bearing Race Shim - Front
NOTE:

The position of the shim for assembly.

5 Power Transfer Unit Idler Gear Shaft Tube O-ring - Front
6 Power Transfer Unit Locating Pins, as required (Qty: 2)
7 Power Transfer Unit Alignment Sleeve, as required.
NOTE:

Discard the alignment sleeve if removed. Install a NEW sleeve during assembly.

Special Tools

  • DT-44380  Differential Bearing Puller
  • DT-45124  Removal Bridge
  • DT-45124 - 9  Puller Legs

Equivalent regional tools: Refer to Special Tools .
8 Power Transfer Unit Face Seal
NOTE: Remove and DISCARD the seal.