that the shaft should not have more than a .002 inch of play.
If you remove the distributor from the car the vacuum advance
plate should move smoothly without binding or play.
frayed or broken wires will cause distributor failure. Check
out the wire harness and electrical parts. Compare the original
unit to the replacement unit before installation.
of the housing, breaker plate, or vacuum chamber may vary
slightly because of the manufacturer designs. This will not
affect the performance of the distributor.
the replacement distributor's gear size, number of teeth,
shaft length and hex drive size (if applicable) must be
identical to the original to prevent extensive damage
to the engine.