48. Valve Lifter and Guide Cleaning and Inspection

Valve Lifter and Guide Cleaning and Inspection (RPO LH6/LMG/LY5/LC9/L76)

Non Active Fuel Management Valve Lifters







Note

Components that are to be used again must be marked, sorted or organized for assembly.

1. Clean the components in cleaning solvent.
Warning: Refer to Safety Glasses and Compressed Air Warning (Safety Glasses and Compressed Air Warning) .

2. Dry the components with compressed air.
3. Inspect the valve lifters for the following conditions:

* Bent or broken clip (1)
* Worn pushrod socket (2)
* Scuffed or worn sides (3)
If the valve lifter shows wear, inspect the engine block lifter bores for wear or damage.
* Flat spots on the roller (4)
* Loose or damaged pin (5)
* Plugged oil hole (6)
* Worn or damaged roller bearing
The roller should rotate freely with no binding or roughness.




Active Fuel Management Valve Lifters







Note

Components that are to be used again must be marked, sorted or organized for assembly.

1. Clean the components in cleaning solvent.
Warning: Refer to Safety Glasses and Compressed Air Warning (Safety Glasses and Compressed Air Warning) .

2. Dry the components with compressed air.
3. Inspect the valve lifters for the following conditions:

* Broken or collapsed spring (1)
* Worn pushrod socket (2)
* Plugged lubrication hole (3)
* Plugged lifter oil-switching hole (4)
* Flat spots on the roller (5)
* Worn or damaged roller bearing (6)
The roller should rotate freely with no binding or roughness.
* Scuffed or worn sides (7)




Valve Guides

Inspect the valve lifter guides for the following conditions:

* Cracks or damage
* Excessive wear in the lifter mounting bores