Chevrolet Silverado / GMC Sierra. Service manual — part 296

Align the oil pump screen mounting brackets with the correct crankshaft bearing cap studs.

7. Install the oil pump screen.

8. Install the oil pump screen bolt and nuts.

Tighten:

1. Tighten the oil pump screen bolt to 12 N.m (106 lb in).

2. Tighten the crankshaft oil deflector/oil pump screen nuts to 25 N.m (18 lb ft).

9. Install the engine front cover. Refer to Engine Front Cover Replacement.

10. Install the oil pan. Refer to Oil Pan Replacement.

TIMING CHAIN AND SPROCKET REPLACEMENT

Special Tools

J 8433 Two Jaw Puller

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

J 41558 Crankshaft Sprocket Remover. See Special Tools.

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

Removal Procedure

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 214: Camshaft Sprocket, Bolt & Timing Chain
Courtesy of GENERAL MOTORS CORP.

1. Remove the oil pump. Refer to Oil Pump, Screen, and Crankshaft Oil Deflector

Replacement.

2. Rotate the crankshaft until the timing marks on the crankshaft and the camshaft sprockets are

aligned.

NOTE:

Do not turn the crankshaft assembly after the timing chain has

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

3. Remove the camshaft sprocket bolts.

4. Remove the camshaft sprocket and timing chain.

Fig. 215: Removing The Crankshaft Sprocket Using J 8433-1, J 41816-2 & J 41558
Courtesy of GENERAL MOTORS CORP.

5. Use the J 8433 , the J 41816-2 and the J 41558 in order to remove the crankshaft sprocket.

See Special Tools.

been removed in order to prevent damage to the piston
assemblies or the valves.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 216: View Of Crankshaft Sprocket
Courtesy of GENERAL MOTORS CORP.

6. Remove the crankshaft sprocket.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2