Valve Rocker Arm Cover Cleaning and Inspection L98, LS2

Important: 

•	Do not use the valve rocker arm cover gasket again. Install a NEW gasket during assembly.

•	Remove the ignition coils before cleaning the cover in solvent. Do not submerge the ignition coils in solvent.

•	Do not remove the oil fill tube from the covers, unless service is required.

1. Inspect the oil fill tube for a loose fit or damage.
2. Inspect the covers for the following conditions:

•	Scoring or damage to the gasket surfaces

•	Ventilation system passages for restrictions

•	Threaded bolt holes for damage or debris

Valve Rocker Arm Cover Cleaning and Inspection LS3

Important: 

•	Do not use the valve rocker arm cover gasket again. Install a NEW gasket during assembly.

•	Remove the ignition coils before cleaning the cover in solvent. Do not submerge the ignition coils in solvent.

•	Do not remove the oil fill tube from the covers unless service is required. If the tube is removed from the cover, install a NEW tube (423) and seal (422) during assembly.

1. Inspect the oil fill tube (423) for a loose fit or damage.
2. Inspect the covers (505) for the following conditions:

•	Scoring or damage to the gasket surfaces

•	Ventilation system passages for restrictions

•	Threaded bolt holes for damage or debris