Piper COMANCHE PA-24-180 Service Manual page 466

PIPER COMANCHE SERVICE MANUAL
NORMAL POINT IS SMOOTH
AND FLAT. SURFACE HAS
DULL GRAY "SANDBLASTED"
APPEARANCE
MINOR IRREGULARITIES -
SMOOTH ROLLING HILLS
AND OALES WITHOUT ANY
DEEP PITS OR HIGH PEAKS.
THIS IS A NORMAL CON-
DITION OF POINT WEAR.
WELL DEFINED MOUND
EXTENDING NOTICEABLY
ABOVE SURROUNDING
SURFACE.
FIGURE 7C-9. CONTACT POINTS
g. Check condition of the cam follower fet. Squeeze felt tighdy between thumb and forefinger. If
fingers are not moistened with oil, re-oil using 2 or 3 drops of Scintilla 1046527 lubnicat. Allow
approximately 30 minutes for felt to absorb the oil. Blot off the excess with a clean cloth. Too much oil
may foul contact points and cause excessive burning.
h. Check the capacitor mounting bracket for cracks or looseness. Using the Scintilla 11-1767-1, -2 or
-3 Condenser Testor or equivalent, check capacitor for capacitance. seres resistance and leakage.
Capacitance shall be at least 0.30 microfarads.
.
Check magneto to engine timing as follows:
1. Connect Scintilla 1151 Timing Light or equivalent across the main conact asembly.
2. Slowly bring the engine up to number one cylinder advance firing position as instructed in
paragraph 7C-53. Ar this instant the timing light should go out. If it does, the magneto is properly timed to
the engine. If the tmuning Light does not go out, removal of the magneto for internal tuming check and
inspection is recommended.
NOTE
The magneto service instructons in this manual are to cover minor
repairs and rining. For further repairs and adjustments of the magneto.
it is recommended that the manufacturer's recommended service
instructions be followed.
POWER PLANT
ISSUED: 8/18/72
0
2 H12