Section 03-00: Engine—Service | 1994 Mustang Workshop Manual |
Cleaning
Clean the push rods (6565) in a suitable solvent. Blow out the oil passage in the push rods with compressed air.
Inspection
Check the ends of the push rods for nicks, grooves, roughness or excessive wear. Replace damaged push rods .
The push rods
can be visually checked for straightness
while they are installed in the engine by rotating them with the valve closed.
They also can be checked with a Rotunda Dial Indicator with Bracketry 014-00282
or equivalent. 
CAUTION: Do not attempt to straighten push rods
.
If the push rod is bent beyond specifications, it should be replaced.