Hummer H3. Manual — part 143

Removal Procedure

1. Remove the balance shaft drive chain. Refer to Balance Shaft Drive Chain Replacement.

Fig. 216: View Of Balance Shaft Chain Guide
Courtesy of GENERAL MOTORS CORP.

2. Remove the balance shaft chain guide bolts.

3. Remove the balance shaft chain guide.

Installation Procedure

2006 Hummer H3

2006 ENGINE Engine Mechanical - 3.5L (L52) - H3

Fig. 217: View Of Balance Shaft Chain Guide
Courtesy of GENERAL MOTORS CORP.

1. Install the balance shaft chain guide.

2. Install the balance shaft chain guide bolts.

Tighten: Tighten the bolts to 10 N.m (89 lb in).

3. Install the balance shaft drive chain. Refer to Balance Shaft Drive Chain Replacement.

NOTE:

Refer to Fastener Notice in Cautions and Notices.

2006 Hummer H3

2006 ENGINE Engine Mechanical - 3.5L (L52) - H3

CRANKSHAFT REAR OIL SEAL REPLACEMENT

Tools Required

J 8092 Driver Handle

J 44215 Rear Seal Installer. See Special Tools.

Removal Procedure

1. Remove the flywheel. Refer to Engine Flywheel Replacement (w/Automatic

Transmission) or Engine Flywheel Replacement (w/Manual Transmission).

Fig. 218: Crankshaft Rear Oil Seal
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Do not damage the crankshaft or seal bore.

2006 Hummer H3

2006 ENGINE Engine Mechanical - 3.5L (L52) - H3

2. Using a suitable tool, pry the crankshaft rear oil seal out from the crankshaft rear oil seal

housing. Discard the seal.

Installation Procedure

1. Lightly lubricate the crankshaft rear oil seal lip with clean engine oil.

2. Position the plastic installation sleeve supplied with the NEW seal to the crankshaft.

Fig. 219: Installing Crankshaft Rear Oil Seal
Courtesy of GENERAL MOTORS CORP.

3. Using the J 44215 with the J 8092 and a hammer, install the crankshaft rear oil seal into the

crankshaft rear oil seal housing.

2006 Hummer H3

2006 ENGINE Engine Mechanical - 3.5L (L52) - H3