63-15-01 CONTINENTAL: Amdt. 592, as amended by Amendment 39-903. Applies to all E165, E185, E225, and O-470 Series Engines. (These engines may be installed in such aircraft as Beech 35 Series, Cessna 180, 182, 310 and Navion.)
Compliance required at next engine top overhaul, or overhaul, which occurs first.
Unless already accomplished in accordance with Continental Motors Corporation Service Bulletin No. M60-1 or AD 61-03-02, remove all exhaust valves CMC P/N 40651, 537844, 538997, or 539449, with or without revision letter suffix, and replace with exhaust valve P/N 626540. Part Number 626540 may be identified by the following:
(a) The basic part number with or without revision letter suffix on the combustion surface of the head, or
(b) The letter "H" or a triangle stamped or etched 0.06 high on the valve stem between the keeper groove and the end of valve on valves manufactured prior to July 1967.
This supersedes AD 61-03-02.
Effective July 25, 1963.Revised December 31, 1969.