Piper Cherokee Six - Page 436

PIPER CHEROKEE
SIX SERVICE
MANUAL
RETARD ANGLES
"E GAP ANGLES
Figure
7A-30.
Timing Marks
on Magneto
Rotor
e.
Remove
the magneto
drive
gear backlash
by turning
the propeller
opposite
to
normal
rotation
approximately
40
°
past
No.
1 firing
position;
then
turn
propeller
in
direction
of normal
rotation up to
No. 1 firing
position of 20
°
BTC.
f.
Remove the
plug from
the distributor
inspection
windows
at either
end of the
magneto
housing.
(Refer
to Figure
7A-31.)
Also
remove
the plug
from the
"E" gap
inspection
window
on
the data
plate side
of the magneto
housing.
(Refer
to Figure
7A-32.)
g.
Turn the
rotating
magnet
drive shaft
in the
normal
direction
of magneto
rotation
until
the red distributor
tooth appears
in the
distributor
inspection
window,
and
also check
to see
if the letter
"K"
appears in
the "E"
gap inspection
window
on the
data plate
side. If
the
letter
"B" is in
the window,
turn
the magneto
shaft
1-1/2 times
in the
direction
of
rotation
and check
again
to be sure
the "K"
is in the window
on
the data
plate side
and the
red distributor
tooth appears
in each distributor
inspection
window.
h.
Install
the
magneto
to engine
gasket
on the
magneto
flange.
i.
Feel the magnet
into its
No. 1 neutral
position
as described
in Step g.
With the
engine
in
its recommended
No. I
cylinder
firing
position
of 20
BTDC,
place
the magneto
in position
on
the engine
mounting
pad
and secure
with
the flange
clamps
finger tight.
j.
Install
short
adapter
leads made
from
Bendix
terminal
kit
(part
number
10-382698)
into
magneto
switch terminals
and
connect
to Bendix
timing
light (part
number
11-91 10)
or
equivalent.
k. Bump
the magneto
in
the direction
opposite
the
normal shaft
rotation
until
the first
breaker
opens.
Due to
normal
tolerances,
one breaker
may
open slightly
before
the other
and timing
should
be done
to the
first or
early breaker.
Evenly
tighten
the
magneto
mounting clamps.
POWER PLANT
Revised:
7/28/75
2H16