Hummer H3. Manual — part 142

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

Fig. 212: View Of Balance Shafts
Courtesy of GENERAL MOTORS CORP.

2. Remove and discard the left balance shaft bolt.

3. Remove the left balance shaft.

Installation Procedure

IMPORTANT:

Do not disassemble the balance shaft. Remove and
install the balance shaft as a complete assembly.

Rotate the balance shaft to check for free rotation. If the
balance shaft does not turn free, inspect the balance
shaft bearings and bearing surface for damage.

2006 Hummer H3

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

Fig. 213: View Of Balance Shafts
Courtesy of GENERAL MOTORS CORP.

1. Lubricate the balance shaft bearing journals with clean engine oil.

2. Install the left balance shaft with the counterweight down to prevent damage to the balance

shaft bearings.

3. Install a NEW balance shaft bolt.

Tighten: Tighten the bolt to 12 N.m (106 lb in).

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

BALANCE SHAFT REPLACEMENT-RIGHT

NOTE:

Refer to Fastener Notice in Cautions and Notices.

2006 Hummer H3

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

Removal Procedure

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

Fig. 214: View Of Balance Shafts
Courtesy of GENERAL MOTORS CORP.

2. Remove and discard the right balance shaft bolts.

3. Remove the right balance shaft.

Installation Procedure

IMPORTANT:

Do not disassemble the balance shaft. Remove and
install the balance shaft as a complete assembly.

Rotate the balance shaft to check for free rotation. If the
balance shaft does not turn free, inspect the balance
shaft bearings and bearing surface for damage.

2006 Hummer H3

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

Fig. 215: View Of Balance Shafts
Courtesy of GENERAL MOTORS CORP.

1. Lubricate the balance shaft bearing journals with clean engine oil.

2. Install the right balance shaft assembly with the counterweight down to prevent damage to

the balance shaft bearings.

3. Install the NEW balance shaft bolts.

Tighten: Tighten the bolts to 12 N.m (106 lb in).

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

BALANCE SHAFT CHAIN GUIDE REPLACEMENT

NOTE:

Refer to Fastener Notice in Cautions and Notices.

2006 Hummer H3

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