Hummer H2. Manual — part 1751

Fig. 197: Crankshaft Sprocket
Courtesy of GENERAL MOTORS CORP.

3. Install the crankshaft sprocket onto the front of the crankshaft. Align the crankshaft key with the

crankshaft sprocket keyway.

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

Fig. 198: Installing Crankshaft Sprocket Using J 41665
Courtesy of GENERAL MOTORS CORP.

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

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.

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

Fig. 199: Camshaft Sprocket, Bolt & Timing Chain
Courtesy of GENERAL MOTORS CORP.

IMPORTANT:

z

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

z

The sprocket teeth and timing chain must mesh.

z

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

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

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

6. Install the camshaft sprocket and timing chain.

Fig. 200: Camshaft & Crankshaft Sprockets Aligned
Courtesy of GENERAL MOTORS CORP.

position.

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2