Hummer H2. Manual - part 2545

Lube hole cracks

2. Inspect the turbine shaft oil seal ring grooves for damage or burrs. The oil seal rings (619) must fit loose

into the ring grooves.

Fig. 152: Blowing Air Into Oil Feed Passages
Courtesy of GENERAL MOTORS CORP.

3. Inspect the oil feed passages for obstructions.

4. Apply compressed air into the passages indicated.

INPUT HOUSING AND SHAFT ASSEMBLY ASSEMBLE

Tools Required

J 23327-1 Forward Clutch Spring Compressor (Bridge). See Special Tools and Equipment .

2004 Hummer H2

2004 TRANSMISSION/TRANSAXLE Automatic Transmission - Overhaul - 4L60-E/4L65-E

J 23456 Booster and Clutch Pack Compressor. See Special Tools and Equipment .

J 25018-A Clutch Spring Compressor Adapter. See Special Tools and Equipment .

J 26744-A Seal Installer. See Special Tools and Equipment .

J 29882 Overrun Clutch Seal Protector. See Special Tools and Equipment .

J 29883 Forward Clutch Seal Protector. See Special Tools and Equipment .

Fig. 153: Locating Forward Clutch Housing O-Ring Seal
Courtesy of GENERAL MOTORS CORP.

1. Install a new input to forward clutch housing O-ring seal (622).

2004 Hummer H2

2004 TRANSMISSION/TRANSAXLE Automatic Transmission - Overhaul - 4L60-E/4L65-E

Fig. 154: Identifying 3rd & 4th Clutch Piston Inspection Areas
Courtesy of GENERAL MOTORS CORP.

2. Inspect the 3rd and 4th clutch piston (623) for the following conditions:

Porosity or damage

Seal damage

3. Install the 3rd and 4th clutch piston (623) into the input housing.

2004 Hummer H2

2004 TRANSMISSION/TRANSAXLE Automatic Transmission - Overhaul - 4L60-E/4L65-E

Fig. 155: Forward Clutch Housing Inspection Areas
Courtesy of GENERAL MOTORS CORP.

4. Inspect the forward clutch housing (628) for the following conditions:

Proper check ball operation

Damage or distortion

Burrs in the seal areas

Cracks

2004 Hummer H2

2004 TRANSMISSION/TRANSAXLE Automatic Transmission - Overhaul - 4L60-E/4L65-E