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Home >> Hummer >> 2009 >> H2 V8-6.2L >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Engine >> Cylinder Head Assembly >> Valve Cover >> Service and Repair >> Valve Rocker Arm Cover Replacement - Left Side
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Valve Rocker Arm Cover Replacement - Left Side




Valve Rocker Arm Cover Replacement - Left Side

Removal Procedure




1. Remove the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement (Upper Intake Manifold Sight Shield Replacement).
2. Remove the connector position assurance (CPA) lock.
3. Disconnect the main electrical connector (2) feeding the ignition coils.
4. Remove the harness clips (1).
5. Reposition the engine harness.
6. Remove the spark plug wires from the ignition coils.

* Twist each plug wire 1/2 turn.
* Pull only on the boot in order to remove the wire from the ignition coil.




7. Remove the ignition coil bracket studs from the rocker arm cover.
8. Remove the ignition coils and bracket from the rocker arm cover.
9. Remove the valve rocker arm cover bolts.
10. Remove the valve rocker arm cover.




11. Remove the gasket (1) from the rocker cover.
12. Discard the OLD gasket.
13. Clean and inspect the rocker arm cover. Refer to Valve Rocker Arm Cover Cleaning and Inspection (Overhaul).

Installation Procedure

Note:
* All gasket surfaces should be free of oil an/or other foreign material during assembly.
* DO NOT reuse the valve rocker arm cover gasket.
* The valve rocker arm cover bolt grommets may be reused.
* If the PCV valve grommet has been removed from the rocker cover, install a NEW grommet during assembly.




1. Install a NEW rocker cover gasket (1) into the valve rocker cover lip.
2. Install the valve rocker arm cover onto the cylinder head.
3. Install new rocker arm cover grommets, if necessary.

Caution: Refer to Fastener Caution (Fastener Caution).

4. Install the rocker arm cover bolts.

Tighten the bolts to 12 Nm (106 lb in).




5. Apply thread lock to the threads of the bracket bolts. Refer to Adhesives, Fluids, Lubricants, and Sealers (Sealers, Adhesives, and Lubricants) for the correct part number.
6. Install the ignition coils and bracket to the rocker arm cover.
7. Install the ignition coil bracket studs to the rocker arm cover.

Tighten the studs to 12 Nm (106 lb in).




8. Install the spark plug wires to the ignition coils.
9. Re-position the engine harness.
10. Install the harness clips (1).
11. Connect the main electrical connector (2) feeding the ignition coils.
12. Install the CPA lock.
13. Install the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement (Upper Intake Manifold Sight Shield Replacement).

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