43. Valve Lifter and Guide Cleaning and Inspection

Valve Lifter and Guide Cleaning and Inspection (5.3L)

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 Warning (Safety Glasses 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 Warning (Safety Glasses 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