Hummer H2. Manual — part 1748

Fig. 186: Crankshaft Oil Deflector & Nuts
Courtesy of GENERAL MOTORS CORP.

7. Remove the remaining crankshaft oil deflector nuts.

8. Remove the crankshaft oil deflector.

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

Fig. 187: Oil Pump & Bolt
Courtesy of GENERAL MOTORS CORP.

9. Remove the oil pump bolts.

10. Remove the oil pump.

11. Clean and inspect the oil pump. Refer to Oil Pump Cleaning and Inspection .

Installation Procedure

IMPORTANT: Do not allow dirt or debris to enter the oil pump assembly, cap end as

necessary.

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

Fig. 188: Oil Pump & Bolt
Courtesy of GENERAL MOTORS CORP.

1. Align the splined surfaces of the crankshaft sprocket and the oil pump drive gear and install the oil pump.

2. Install the oil pump onto the crankshaft sprocket until the pump housing contacts the face of the engine

block.

3. Install the oil pump bolts.

Tighten: Tighten the oil pump bolts to 25 N.m (18 lb ft).

NOTE:

Refer to Fastener Notice in Cautions and Notices.

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

Fig. 189: Crankshaft Oil Deflector & Nuts
Courtesy of GENERAL MOTORS CORP.

4. Install the crankshaft oil deflector and nuts until snug.

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2