Hummer H3. Manual — part 113

Tighten:

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

2. Tighten the small center bolt (1) last to 8 N.m (71 lb in).

9. Install the oil pump pipe and screen assembly. Refer to Oil Pump Pipe and Screen

Assembly Replacement.

10. Install the power steering pump. Refer to Power Steering Pump Replacement in Power

Steering System.

11. Install the drive belt tensioner. Refer to Drive Belt Tensioner Replacement.

12. Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement.

13. Install the water pump. Refer to Water Pump Replacement in Engine Cooling.

CAMSHAFT POSITION ACTUATOR REPLACEMENT - EXHAUST

Tools Required

EN-44217-45 Chain Holding Tool. See Special Tools.

J 44217 Timing Chain Retention Tool. See Special Tools.

J 44221 Camshaft Holding Tool. See Special Tools.

J 45059 Angle Meter. See Special Tools.

Removal Procedure

1. Remove the camshaft cover. Refer to Camshaft Cover Replacement.

2. Ensure the exhaust camshaft position (CMP) actuator is functioning properly. Refer to

Camshaft Position (CMP) Actuator Diagnosis.

3. Remove the exhaust CMP sensor. Refer to Camshaft Position (CMP) Sensor

Replacement-Exhaust in Engine Controls - 3.5L (L52).

4. Remove the intake CMP sensor. Refer to Camshaft Position (CMP) Sensor

Replacement-Intake in Engine Controls - 3.5L (L52).

2006 Hummer H3

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

Fig. 113: View Of CMP Actuator
Courtesy of GENERAL MOTORS CORP.

5. Rotate the crankshaft in the engine rotational direction clockwise, until the #1 piston is at

top dead center (TDC) on the compression stroke.

The word Delphi on the exhaust camshaft position actuator will be parallel with the cylinder
head to cam cover mating surface.

6. Using the timing mark on the exhaust camshaft position actuator sprocket as a reference,

2006 Hummer H3

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

make a mark on the timing chain link adjacent to it.

Fig. 114: View Of J 44221 Installed On Camshafts
Courtesy of GENERAL MOTORS CORP.

7. Install the J 44221 to the rear of the camshafts. See Special Tools.

CAUTION: Refer to Camshaft Holding Tool Caution in Cautions and

Notices.

2006 Hummer H3

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

Fig. 115: Installing 44217 & EN-44217-45 To Timing Chains
Courtesy of GENERAL MOTORS CORP.

8. Complete the following in order to install the J 44217 (1) and the EN-44217-45 (1). See

Special Tools.

1. Install the hook portion of the timing chain retention tools into one of the timing chain

links near the timing chain shoe on both sides of the engine.

2. Tighten the wingnuts.

3. Ensure the hooks are still in one of the links and the gage blocks of the tool are firmly

2006 Hummer H3

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