Hummer H3. Manual — part 248

1. Install the timing chain tensioner.

2. Install the timing chain tensioner bolts.

Tighten: Tighten the timing chain tensioner bolts to 25 N.m (18 lb ft).

Fig. 608: View Of Timing Chain Guide & Bolts
Courtesy of GENERAL MOTORS CORP.

NOTE:

Refer to Fastener Notice in Cautions and Notices.

2006 Hummer H3

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

3. Install the timing chain tensioner guide.

4. Install the timing chain tensioner guide bolts.

Tighten: Tighten the timing chain tensioner guide bolts to 18 N.m (13 lb ft).

Fig. 609: View Of Timing Chain Tensioner Shoe & Bolt
Courtesy of GENERAL MOTORS CORP.

5. Install the timing chain tensioner shoe.

6. Install the timing chain tensioner shoe bolt.

2006 Hummer H3

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

Tighten: Tighten the timing chain tension shoe bolt to 25 N.m (18 lb ft).

Fig. 610: View Of Cylinder Head Access Hole Plugs
Courtesy of GENERAL MOTORS CORP.

7. Install the cylinder head access hole plugs.

Tighten: Tighten the cylinder head access hole plugs to 5 N.m (44 lb in).

TIMING CHAIN AND SPROCKETS INSTALLATION

2006 Hummer H3

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

Tools Required

J 44221 Camshaft Holding Tool. See Special Tools.

J 45059 Angle Meter. See Special Tools.

Fig. 611: View Of J 44221 Installed On Camshafts
Courtesy of GENERAL MOTORS CORP.

1. Install J 44221 with the camshaft flats up and the number 1 cylinder at top dead center. See

Special Tools. The crankshaft pin should be at 12 o'clock when the number 1 piston is at
top dead center.

2006 Hummer H3

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