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Home >> GMC >> 2018 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (Automatic Transmission - 6T40 (MNH MNK) Or 6T45 (MHG) - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> 3-5-Reverse And 4-5-6 Clutch Housing Disassemble >> 4 - 5 - 6 Clutch Piston Removal

4 - 5 - 6 Clutch Piston Removal

WARNING: This page is about a different variant/trim than selected.
Fig 1: 4--5--6 Clutch Piston & Components
GM2552957Courtesy of GENERAL MOTORS COMPANY
4 - 5 - 6 Clutch Piston Removal

Callout Component Name
1 4 - 5 - 6 Clutch Dam Retaining Ring
NOTE:

The 4-5-6 clutch dam retaining ring is not reusable.

Special Tools

  • DT-47951-2  Spring Compressor
  • GE 5586-A  Snap Ring Pliers or equivalent

For equivalent regional tools, refer to Special Tools .
2 4 - 5 - 6 Clutch Piston Fluid Dam Assembly

Procedure

  1. Place the 3 - 5 reverse and 4 - 5 - 6 clutch housing onto the support hub in the case.
  2. Apply shop air to the 4 - 5 - 6 clutch feed hole using a rubber tipped air gun to dislodge the dam piston and the 4 - 5 - 6 clutch piston from the clutch housing.
3 4 - 5 - 6 Clutch Piston Return Spring Assembly
4 4 - 5 - 6 Clutch Piston
NOTE:

Apply shop air to the 4 - 5 - 6 clutch feed hole using a rubber tipped air gun to dislodge the clutch piston.

5 4 - 5 - 6 Clutch Piston Inner Seal
6 4 - 5 - 6 Clutch Piston Outer Seal (Dark Blue) (Stepped)
7 4 - 5 - 6 Clutch Piston Outer Seal (Large) (Rounded)