LEMON Manuals: Even more car manuals for everyone
Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 398 (Automatic Transmission - 6L80/6L90 - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> 4-5-6 Clutch Overhaul (6L80/6L90) >> 4-5-6 Clutch Piston Installation

4-5-6 Clutch Piston Installation

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: 4-5-6 Clutch Piston
GM1555336Courtesy of GENERAL MOTORS CORP.
4-5-6 Clutch Piston Installation

Callout Component Name
1 4-5-6 Clutch Piston Assembly
2 4-5-6 Clutch Spring
CAUTION:

Ensure the spring tabs are facing up during installation. Failure to do so may cause damage to the clutch assembly.

3 4-5-6 Clutch Piston Dam Assembly
TIP:  Lubricate the inner and outer sealing surfaces of the dam assembly with automatic transmission fluid (ATF) in order to ease installation into the piston.
4 4-5-6 Clutch Piston Dam Retaining Ring
CAUTION:

Use care when compressing the 4-5-6 clutch piston assembly, spring and dam assembly. Compressing the dam assembly too much may damage it.

CAUTION:

Refer to Retaining Ring Reuse Caution .


TIP:  Apply air to verify proper installation of all 4-5-6 clutch components. The piston should apply and release smoothly.
Special Tool 
J 43074  Clutch Spring Compressor
For equivalent regional tools, refer to Special Tools .