Hummer H2. Manual — part 2559

Fig. 206: View Of Pump To Drum Thrust Washer

2004 Hummer H2

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

Courtesy of GENERAL MOTORS CORP.

1. Remove the thrust (pump to drum) washer (601).

2. Remove the oil (pump to case) O-ring seal (5) - some models.

Fig. 207: Locating Pump Cover Bolts

2004 Hummer H2

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

Courtesy of GENERAL MOTORS CORP.

3. Remove the pump cover bolts (233).

4. Remove the pump cover (215) from the pump body (200).

OIL PUMP BODY DISASSEMBLE

Fig. 208: Retaining Pump Slide Springs With A Rag
Courtesy of GENERAL MOTORS CORP.

1. Remove the pump slide inner (207) and outer (206) springs or spring (245) - some models.

2. Place a rag over the spring or springs while removing them to prevent the springs from flying out.

2004 Hummer H2

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

Fig. 209: Identifying Pump Vane Ring Assemblies
Courtesy of GENERAL MOTORS CORP.

3. Remove the oil pump rotor (212) and pump vane rings (210).

4. Remove the pump vanes (213).

5. Remove the rotor guide (211).

2004 Hummer H2

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