Piper Cherokee Six - Page 609

PIPER
.CHEROKEE
SIX
SERVICE
MANUAL
TABLE
X-II.
ELECTRICAL
SYSTEM
TROUBLESHOOTING
(cont.)
Isolation
Procedure
and
Remedy
Trouble
Probable
Cause
Motor
fails
to
operate.
(cont.)
Binding,
worn,
or
im-
properly
seated
brush,
or
brushes
with
excessive
side
play.
(cont.)
facilities
are
not
available
for
running
in
brushes,
then
the
brush
should
be
pro-
perly
seated
by
insert-
ing
a strip
of
number
000
sandpaper
between
the
brush
and
commu-
tator,
with
the
sanded
side
next
to
the
brush.
Pull
sandpaper
in
the
direction
of
rotation.
being
careful
to
keep
it
in
the
same
contour
as
the
commutator.
CAUTION:
Do
not
use
coarse
sandpaper
or
em-
ery
cloth.
After
seating.
clean
thoroughly
to
re-
move
all
sand
and
metal
particles
to
prevent
excessive
wear.
Keep
motor
bearing
free
from
sand
or
metal
particles.
Dirty
commutator.
If commutator
is
rough
or
dirty,
smooth
and
polish
with
number
0000
sandpaper.
If
too
rough
and
pitted.
remove
and
turn
down.
Blow
out
all
parti-
cles.
ELECTRICAL
SYSTEM
Revised:
7/28/75
3D9