Hummer H3. Manual — part 130

Fig. 169: View Of CMP Actuator
Courtesy of GENERAL MOTORS CORP.

4. 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.

2006 Hummer H3

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

Fig. 170: View Of J 44221 Installed On Camshafts
Courtesy of GENERAL MOTORS CORP.

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

6. Remove and discard the intake and the exhaust camshaft sprocket bolts.

CAUTION: Refer to Camshaft Holding Tool Caution in Cautions and

Notices.

2006 Hummer H3

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

Fig. 171: View Of J 44222 Installed Onto Cylinder Head
Courtesy of GENERAL MOTORS CORP.

7. Install the J 44222 onto the cylinder head and adjust the horizontal bolts into the camshaft

sprockets in order to maintain chain tension and keep from disturbing the timing chain
components. See Special Tools.

8. Carefully slide the sprockets with the timing chain from the camshafts to the J 44222 . See

Special Tools.

2006 Hummer H3

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

Fig. 172: View Of Camshaft Caps
Courtesy of GENERAL MOTORS CORP.

9. Alternately loosen the camshaft cap bolts a few turns at a time until all valve spring pressure

has been released.

10. Remove the camshaft caps.

11. Remove the J 44221 from the camshafts. See Special Tools.

IMPORTANT: Place the camshaft caps in a rack to ensure the caps are

installed in the same location from which they were removed.

2006 Hummer H3

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