Hummer H3. Manual — part 539

8. Remove the J 41479 . See Special Tools.

9. Install the automatic transmission flexplate, refer to Automatic Transmission Flex Plate

Replacement.

ENGINE REAR COVER REPLACEMENT

Tools Required

J 41476 Front and Rear Cover Alignment Tool. See Special Tools.

Removal Procedure

Fig. 178: View Of Oil Pan-To-Rear Cover Bolts
Courtesy of GENERAL MOTORS CORP.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

1. Remove the automatic transmission flexplate, refer to Automatic Transmission Flex Plate

Replacement.

2. Remove the oil pan-to-rear oil seal housing bolts (1).

Fig. 179: View of Rear Housing, Gasket and Seal
Courtesy of GENERAL MOTORS CORP.

3. Remove the rear oil seal housing bolts (517).

4. Remove the rear oil seal housing (518) and gasket (519). Discard the gasket.

5. Remove and discard the rear oil seal (141).

Installation Procedure

IMPORTANT:

Do not reuse the crankshaft oil seal or rear cover gasket.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

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

The special tool in this procedure is used to properly center
the crankshaft rear oil seal.

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.

All gasket surfaces should be free of oil or other foreign
material during assembly.

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

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

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

Fig. 180: View Of Sealant Applied To Rear Oil Pan-To-Engine Block Junction
Courtesy of GENERAL MOTORS CORP.

1. Apply a 5 mm (0.2 in) bead of sealant, 20 mm (0.8 in) long to the oil pan to engine block

junction. Refer to Adhesives, Fluids, Lubricants, and Sealers.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3