Hummer H3. Manual — part 534

Fig. 163: View Of Crankshaft Front Oil Seal
Courtesy of GENERAL MOTORS CORP.

IMPORTANT:

Do not lubricate the oil seal sealing surface.

Do not reuse the crankshaft front oil seal.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

1. Lubricate the outer edge of the oil seal (1) with clean engine oil.

2. Lubricate the front cover oil seal bore with clean engine oil.

Fig. 164: View Of Crankshaft Front Oil Seal Installation
Courtesy of GENERAL MOTORS CORP.

3. Install the crankshaft front oil seal (1) onto the J 41478 guide. See Special Tools.

4. Install the J 41478 threaded rod (with nut, washer, guide, and oil seal) into the end of the

crankshaft. See Special Tools.

5. Use the J 41478 in order to install the oil seal into the cover bore. See Special Tools.

1. Use a wrench and hold the hex on the installer bolt.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

2. Use a second wrench and rotate the installer nut clockwise until the seal bottoms in the

cover bore.

3. Remove the J 41478 . See Special Tools.

4. Inspect the oil seal for proper installation. The oil seal should be installed evenly and

completely into the front cover bore.

6. Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement.

ENGINE FRONT COVER REPLACEMENT

Special Tools

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

J 41480 Front and Rear Cover Alignment. See Special Tools.

Removal Procedure

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

Fig. 165: View Of Electrical Connector, Cable Channel Bolt & Pin
Courtesy of GENERAL MOTORS CORP.

1. Remove the water pump. Refer to Water Pump Replacement (With LH8) .

2. Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement.

3. Disconnect the engine harness electrical connector (1) from the camshaft position (CMP)

sensor wire harness electrical connector.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3