Hummer H2. Manual — part 1863

2004 Hummer H2

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

Fig. 614: Engine Block Rear Oil Gallery Plug
Courtesy of GENERAL MOTORS CORP.

1. Inspect the rear oil gallery plug for proper installation.

IMPORTANT:

z

Do not use the crankshaft rear oil seal or the engine rear cover
gasket again.

z

Do not apply any type sealant to the rear cover gasket, unless
specified.

z

The special tools in this procedure are used to properly align the
engine rear cover at the oil pan surface and to center the crankshaft
rear oil seal.

z

The crankshaft rear oil seal will be installed after the rear cover has
been installed and aligned. Install the rear cover without the
crankshaft oil seal.

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The crankshaft rear oil seal MUST be centered in relation to the
crankshaft.

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The oil pan sealing surface at the rear cover and engine block
MUST be aligned within specifications.

{

An improperly aligned rear cover may cause premature rear oil
seal wear and/or engine assembly oil leaks.

2004 Hummer H2

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

Fig. 615: Rear Cover, Bolts & Gasket
Courtesy of GENERAL MOTORS CORP.

2. Install the rear cover gasket, rear cover and bolts.

3. Tighten the bolts finger tight. Do not overtighten.

2004 Hummer H2

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

Fig. 616: View Of J 41480 Installed
Courtesy of GENERAL MOTORS CORP.

4. Install the J 41480 and bolts. See Special Tools and Equipment .

NOTE:

Refer to Fastener Notice in Cautions and Notices.

IMPORTANT: Start the J 41480 tool-to-rear cover bolts. Do not tighten the bolts at this

time. See Special Tools and Equipment .

2004 Hummer H2

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