Hydraulic Valve Tappets or Hydraulic Roller Valve Tappets

 CAUTION: If any part of the valve tappet (6500) needs replacing, replace the entire valve tappet .

The valve tappets should be kept in proper sequence so that they can be installed in their original position. Inspect and test each valve tappet separately so as not to intermix. If a valve tappet is worn, it is recommended that all valve tappets and camshaft (6250) be replaced.

Cleaning

Thoroughly clean all the parts in clean solvent and wipe them with a clean and lint-free cloth.

Inspection

Inspect the parts and discard the entire valve tappet if any part shows pitting, scoring or excessive wear. Replace the entire valve tappet if the plunger is not free in the body. The plunger should drop to the bottom of the body by its own weight when assembled dry.

Assemble the valve tappet and check for freeness of operation by pressing down on the plunger. The valve tappets can also be checked with a hydraulic tester to test the leakdown rate. Follow the instructions of the test unit manufacturer or the Hydraulic Valve Tappet Leakdown Testing procedure as outlined.