Piper Cherokee Six - Page 442

PIPER
CHEROKEE
SIX
SERVICE
MANUAL
Figure
7A-37.
Stop
Pin
Installation
Dimension
e.
Do
not
tighten
puller
handle
further
after
coupling
cam
releases
from
the
shaft.
This
could
damage
the
flyweight
if
the
flyweight
is
caught
under
the
woodruff
key.
Remove
the
puller
from
the
shaft.
Then
while
holding
both
flyweight
tips
inward,
left
cam
from
the
shaft,
and
remove
woodruff
key
from
rotor
shaft.
7A-42.
INSPECTION
OF
IMPULSE
COUPLING.
a.
Check
clearance
between
each
flyweight
and
each
stop
pin
by
the
following
method:
1.
Bend
the
end
of
a
stiff
piece
of
wire
into
a
right
angle,
1/8
inch
long
maximum.
2.
Hold
the
magneto
as
shown
in
Figure
7A-36.
Pull
the
heel
of
the
flyweight
outward
with
the
fabricated
hooked
wire
and
make
certain
that
a
feeler
gauge
of
0.015
of
an
inch
minimum
thickness
will
pass
between
the
stop
pin
and
the
highest
point
of
the
flyweight.
NOTE
A
true
and
accurate
check
of
the
clearance
between
the
flyweights
and
stop
pins
can
only
be
obtained
by
pulling
the
flyweight
outward
as
described.
Do
not
attempt
the
check
by
pushing
in
on
the
flyweight
at
point
"A"
of
Figure
7A-36.
b.
Inspect
impulse
coupling
stop
pins
for
damage.
If
pins
are
bent,
damaged
or
excessively
worn,
remove
pins
using
a
suitable
drift
and
arbor
press.
Press
new
pins
into
flange
until
dimension
shown
in
Figure
7A-37
is
obtained.
c.
Visually
inspect
flyweight
securing
washers
and
flyweights,
particularly
in
area
around
the
axle
hole
for
cracks.
Grip
washers
with
pliers
and
exert
moderate
turning
force
to
check
looseness.
If
washer
moves
or
any
cracks
are
found,
reject
cam
assembly.
POWER
PLANT
Added:
7/28/75
2H22