Piper PA-24 Comanche Service Manual page 376

PIPER COMANCHE SERVICE
MA~t'AL
MEA5iJRE 3COv
THICKNESS "~1"E
l..EF'T
FlOTATION
FIGl'R[ 7A·l!\. LEAD POSITIOl'lING
FIGt:RE 7A·16. IMPl:LSE COl'Pll~G
~OTE
The magneto sen ice instructions in this manual are to cover minor
repairs and timing. For further repairs and adjustments of the
magnetos, it is recommended that the manufacturer's service
instruction" be followed.
•
Remme the harness outlet plate from the magneto by removing the four attaching screws.
Remove
the two nuts and washers securing the magneto to the engine accessory housing.
Pull the magneto from the engine.
e.
7A· 70. Removal Of Magneto.
a. Lift the side panels of the engine cowling.
b. Disconnect the "P" lead from the magneto and the retard breaker lead from the left. <!OO series.
magneto.
c.
d.
7
A-
i
I. Timing Procedure, (Internal Timing) -20 and -200 series Magneto Main Breaker Points. When
installing new or adjusting breaker points and before timing the magneto to the engine. it is important that
the internal timing of the magneto be correct.
a, To internally time the magneto it should be removed from the engine to determine "E" gap.
h. To determine "E" gap. find neutral position of the magneto drive by rotating drive coupling in a
timing inspection hole. At the same location. the drive should feel to have fallen into a notch or neutral
position.
ISSl'ED: 8/18/72
2D20
POWER
PL.\.