Tools Required

J 5790-B Hydraulic Lifter Leakdown Tester

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

1. Mark, sort, or organize the components for assembly.
2. Clean the components in cleaning solvent.

Caution: Wear safety glasses in order to avoid eye damage.

3. Dry the components with compressed air.



4. Inspect the valve lifters for the following conditions:

•	Damaged or broken clip

•	Scored or worn pushrod socket

•	Scuffed or worn lifter body

•	If the valve lifter body shows scuffing or wear, inspect the engine block valve lifter bores for wear or damage.

•	Lifter foot for wear

•	The lifter foot should be smooth and slightly convex or flat.

•	Plugged oil hole




5. Inspect the valve lifter leak down rate. Use the J 5790-B .
6. Replace the lifter if the plunger travel is more than 3.175 mm (0.125 in) in 12-19 seconds under a 222.4 Newtons (50 lb) load.
7. Inspect the valve lifter guides for cracks or damage.