Piper Comanche PA-24 Service Manual page 499

PIPER COMANCHE SERVICE MANUAL
...
RED OR
WHITE T"mIH~
1---
21
,'4 IN,
son WIRE/
,
3 4 IN,
SOLDER .......
_,\1
- J
~
CAM
WASHER~
'!'IMING MARK
FIGURE 7A·17. MAGNETO TIMING MARKS
FIGURE 7A·1B. TIMING POINTER
c. Rotate coupling from noutn!' in • left hand direction 10·, Appearing through timing hole. when
the wnite or red tooth :WJns WIth the white line of the distributor block. the magneto is set .t "E" g.p.
(Refer to Fipre 7 A,-17.) Allgnment ma.y not vary over 4
~.
d. Using the aliJrunent of the chamfered tooth on the distributor gur .. ,d the white line on the
distributor block u a rd'erence. &djuSt the brea.kcr poinu to open
at thiS pOint.
Turn the magneto dnve
until the cam follower is on hl8'h poun of the cam lobe Measure contact dcU21lC:C:.
It
must be 018 incn
=
006
With
the point opening
set
at "E" gap:: 4-
Q.
If breaker points do
nOt
come within tolerances. they
should be replaced.
7A·72. Adjusting Reurd Break .. Points ·200 Seri .. Mapetol.
a. Install tim1l1g plate and pointer on magnetos Without timing marks cast in the breaker
compartment lrefer to Figure 7 A-19) or just the pointer on magnetos
WIth
nmrng marks cast in the breaker
comparunent. (Refer to Figure 7A~20)
NOTE
A timing kit. iJ1c1uding timing piate, etc. may be purcha.scd through the
engine or magneto manufacturer. A pointer may be formed as shown in
Figure 7,1.·18
NOTE
A pointer ca.n also be made by
wra~ping
a. piece of soft wire tIghtly
a.round the he3.d of cam securing screw and bending It to extend over
timmg marks.
2 D21
POWER PLANT
ISSUED: 8/18172