Continental C125/C145/O-300 Cylinders/Valves - Monty the,
The rocker arms are not adjustable, so the only way to change the cold clearance to is to grand the valve, valve seat, valve stem, rocker arm or valve stem, or to install a longer pushrod.re: AD 64-05-06, it sounds like you have a Univair replacement mount instead of a 54 year old Globe or Temco made mount.PL 98-01-08 Teledyne Continental Motors with STC,Performance Engineering exhaust roller rocker arms, P/N PE92E, and replace with serviceable parts, as follows: (1) For IO-520, TSIO-520, O-470, IO-470, and all IO-550 series engines except the IO-550-G, replace with serviceable TCM exhaust roller rocker arms, P/N 652130. (2) For IO-550-G series engines, replace with serviceable TCM exhaust,Continental Rocker arm to valve stem misalignment,Mar 02, 2020· Rocker arms should be fixtured so the rocker arm shaft is parallel to the toe of the arm and the surfacing wheel or grinding wheel. The toe, the surface that contacts the the valve stem must be square with the valve stem. If not you will have high unit loading and spalling of the rocker arm toe.