Hummer H3. Manual — part 128

Fig. 163: View Of Upper Timing Chain Guide
Courtesy of GENERAL MOTORS CORP.

2. Remove the upper timing chain guide bolts.

3. Remove the upper timing chain guide from the cylinder head.

Installation Procedure

2006 Hummer H3

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

Fig. 164: View Of Upper Timing Chain Guide
Courtesy of GENERAL MOTORS CORP.

1. Position the upper timing chain guide to the cylinder head.

2. Apply threadlock GM P/N 12345498 (Canadian P/N 10953488) to the upper timing chain

guide bolt threads.

3. Install the upper timing chain guide bolts.

NOTE:

Refer to Fastener Notice in Cautions and Notices.

2006 Hummer H3

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

Tighten: Tighten the bolts to 10 N.m (89 lb in).

4. Install the camshaft cover. Refer to Camshaft Cover Replacement.

TIMING CHAIN GUIDE REPLACEMENT-LOWER

Removal Procedure

1. Remove the timing chain tensioner shoe. Refer to Timing Chain Tensioner Shoe

Replacement.

2. Slide the crankshaft sprocket from the crankshaft sprocket snout, in order to gain slack in

the timing chain to remove the lower timing chain guide.

2006 Hummer H3

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

Fig. 165: View Of Cylinder Head Access Hole Plugs
Courtesy of GENERAL MOTORS CORP.

3. Remove the cylinder head access hole plug.

2006 Hummer H3

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