43. Valve Lifter and Guide Clean and Inspect

Valve Lifters and Guides Cleaning and Inspection

Non Displacement on Demand Valve Lifters





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

Clean the components in cleaning solvent.

2. Caution: Refer to Safety Glasses Caution in Service Precautions.

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.

Displacement on Demand Valve Lifters





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

Clean the components in cleaning solvent.

2. Caution: Refer to Safety Glasses Caution in Service Precautions.

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