Chevrolet Silverado / GMC Sierra. Service manual — part 298

Fig. 221: Using J 41665 To Install Crankshaft Sprocket
Courtesy of GENERAL MOTORS CORP.

4. Use the J 41665 in order to install the crankshaft sprocket. See Special Tools.

Install the sprocket onto the crankshaft until fully seated against the crankshaft flange.

5. Rotate the crankshaft sprocket until the alignment mark is in the 12 o'clock position.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 222: Camshaft Sprocket, Bolt & Timing Chain
Courtesy of GENERAL MOTORS CORP.

IMPORTANT:

Properly locate the camshaft sprocket locating pin with
the camshaft sprocket alignment hole.

The sprocket teeth and timing chain must mesh.

The camshaft and the crankshaft sprocket alignment
marks MUST be aligned properly.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

6. Install the camshaft sprocket and timing chain.

Locate the camshaft sprocket alignment mark in the 6
o'clock position.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 223: View Of Camshaft & Crankshaft Sprockets Timing Marks Aligned
Courtesy of GENERAL MOTORS CORP.

7. If necessary, rotate the camshaft or crankshaft sprockets in order to align the timing marks.

8. Install the camshaft sprocket bolts.

Tighten: Tighten the camshaft sprocket bolts to 35 N.m (26 lb ft).

9. Install the oil pump. Refer to Oil Pump, Screen, and Crankshaft Oil Deflector

Replacement.

CAMSHAFT REPLACEMENT

Removal Procedure

NOTE:

Refer to Fastener Notice .

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2