Hummer H2. Manual - part 2553

Courtesy of GENERAL MOTORS CORP.

4. Continue the stack up if seven 654A plates are used.

Fig. 182: Identifying 3-4 Clutch Boost Spring Assemblies
Courtesy of GENERAL MOTORS CORP.

5. Inspect the five 3-4 clutch boost spring assemblies (600) for damaged, worn, broken or missing springs.

Springs must be held securely by retainer.

6. Install the 3-4 clutch boost spring assemblies (600) into the input housing.

2004 Hummer H2

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

Fig. 183: Locating 3rd & 4th Clutch Selective Backing Plate & Retainer Ring
Courtesy of GENERAL MOTORS CORP.

7. Install the 3rd and 4th clutch selective backing plate (655). Some models may have a chamfer on one side

of the selective backing plate. Install the chamfer side up.

8. Install the 3rd and 4th clutch backing plate retainer ring (656).

2004 Hummer H2

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

3-4 CLUTCH PLATE TRAVEL CHECK

Fig. 184: Checking 3rd & 4th Clutch Plate Travel
Courtesy of GENERAL MOTORS CORP.

1. Use feeler gauges to check the 3rd and 4th clutch plate travel.

2. Check the travel between the selective backing plate (655) and the first fiber plate assembly (654A).

The 3rd and 4th clutch plate travel should be 0.90-2.10 mm (0.035-0.083 in).

3. Select the proper 3rd and 4th clutch selective backing plate to obtain the correct travel. Refer to Third

and Fourth Clutch Backing Plate Selection .

2004 Hummer H2

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

CLUTCH AIR CHECK

Inspection Procedure

Fig. 185: Applying Air To Check Overrun Clutch
Courtesy of GENERAL MOTORS CORP.

Apply air into the feed holes in the turbine shaft in order to check the following items:

The 3rd and 4th clutch (1)

The forward clutch (2)

The overrun clutch (3)

IMPORTANT: When the overrun clutch is checked, the air will blow by the forward clutch

piston lip seals and exit out of the forward clutch feed hole in the turbine shaft.

2004 Hummer H2

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