Hummer H3. Manual — part 519

1. Lubricate the O-ring seal of the NEW oil fill tube with clean engine oil.

2. Insert the NEW oil fill tube into the rocker arm cover.

Rotate the tube clockwise until locked in the proper position.

3. Install the oil fill cap into the tube.

Rotate the cap clockwise until locked in the proper position.

Fig. 111: Rocker Arm Cover Gasket
Courtesy of GENERAL MOTORS CORP.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

4. Install a NEW rocker cover gasket (1) into the valve rocker arm cover.

Fig. 112: View Of Valve Rocker Arm Cover & Bolts (Right)
Courtesy of GENERAL MOTORS CORP.

5. Install the valve rocker arm cover onto the cylinder head.

6. Install new rocker arm cover grommets, if necessary.

NOTE:

Refer to Fastener Notice .

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

7. Install the rocker arm cover bolts and grommets.

Tighten: Tighten the bolts to 12 N.m (106 lb in).

Fig. 113: Vent Hose
Courtesy of GENERAL MOTORS CORP.

8. Install the vent hose (2) to the valve rocker arm cover (1).

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

Fig. 114: Ignition Coils & Bracket
Courtesy of GENERAL MOTORS CORP.

9. Apply threadlock to the threads of the bracket bolts. Refer to Adhesives, Fluids,

Lubricants, and Sealers for the correct part number.

10. If necessary, install the ignition coils and bracket to the rocker arm cover.

11. If necessary, install the ignition coil bracket studs to the rocker cover.

Tighten: Tighten the studs to 12 N.m (106 lb in).

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3