Chevrolet Silverado / GMC Sierra. Service manual — part 272

Fig. 131: View Of Valve Lifter Guide And Bolt
Courtesy of GENERAL MOTORS CORP.

3. Install the valve lifters and guide to the engine block.

4. Install the valve lifter guide bolt (1).

Tighten: Tighten the valve lifter guide bolt (1) to 12 N.m (106 lb in).

5. Install the cylinder head and gasket. Refer to Cylinder Head Replacement - Left Side or

NOTE:

Refer to Fastener Notice .

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Cylinder Head Replacement - Right Side.

CRANKSHAFT BALANCER REPLACEMENT

Special Tools

J 41478 Crankshaft Front Oil Seal Installer. See Special Tools.

J 41816 Crankshaft Balancer Remover

J 41816-2 Crankshaft End Protector. See Special Tools.

J 42386-A Flywheel Holding Tool. See Special Tools.

J 41665 Crankshaft Balancer and Sprocket Installer. See Special Tools.

J 45059 Angle Meter. See Special Tools.

Removal Procedure

1. Remove the fan shroud. Refer to Cooling Fan and Shroud Replacement .

2. Remove the starter motor. Refer to Starter Motor Replacement .

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 132: Using J 42386-A To Lock Flywheel
Courtesy of GENERAL MOTORS CORP.

IMPORTANT:

Make sure that the teeth of the J 42386-A are fully
engaged into the flywheel ring gear teeth. See Special
Tools.

The crankshaft balancer is balanced as an individual
component. It is not necessary to mark the balancer
prior to removal.

NOTE:

Refer to Fastener Notice .

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

3. Install the J 42386-A . See Special Tools.

Use one M10-1.5 x 120 mm and one M10-1.5 x 45 mm bolt for proper tool operation.

Tighten: Tighten the J 42386-A to 50 N. See Special Tools.m (37 lb ft).

Fig. 133: Crankshaft Balancer And Retaining Bolt
Courtesy of GENERAL MOTORS CORP.

4. Remove the crankshaft balancer bolt.

Do not discard the crankshaft balancer bolt. The balancer bolt will be used during the

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2