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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 537 (Automatic Transmission - 6L80/6L90 - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> 1-2-3-4 and 3-5 Reverse Clutch Overhaul (6L50/6L80/6L90) >> 1-2-3-4 and 3-5 Reverse Clutch Piston Seals Replacement

1-2-3-4 and 3-5 Reverse Clutch Piston Seals Replacement

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Fig 1: 1-2-3-4 & 3-5 Reverse Clutch Piston Seals
GM1555367Courtesy of GENERAL MOTORS COMPANY
1-2-3-4 and 3-5 Reverse Clutch Piston Seals Replacement

Callout Component Name
CAUTION:

Refer to Seal Reuse Caution .

Preliminary Procedure Lubricate all seals with automatic transmission fluid (ATF) prior to installation.
1 1-2-3-4 Clutch Piston Seal
2 3-5 Reverse Clutch Piston Dam (O-Ring) Seal
3 3-5 Reverse Clutch Piston Inner Seal
4 1-2-3-4 Clutch Piston Housing
5 3-5 Reverse Clutch Piston Outer Seal
6 3-5 Reverse Clutch Piston
7 1-2-3-4 Clutch Piston Inner Seal
CAUTION:

Do not install a NEW 1-2-3-4 clutch piston inner seal yet. A special tool used to install the 1-2-3-4 clutch piston housing retaining ring may damage the seal if the seal is installed prior to installing the retaining ring. Refer to 3-5 Reverse Clutch Piston Installation.

8 1-2-3-4 Clutch Piston Housing Seal
9 1-2-3-4 Clutch Piston Housing Seal