Mooney M20B - Page 75

´•bib~
-STARTER,
Continued
TROUBI~E
CAUSE
REMEDY
Binding,
worn,
or
improp-
Brushes
should
he
a
free
fit
in
the
erly
seated
brush,
or
brush
boxes
without
excessive
s;de
brushes with
excessive
F:sy. Binding
brushe´• and
brush
side
play.
boxes should
be
wiped
clean
with
a
gasoline
(undoped)
moistened cloth.
A
new
should
be
run
in
antil
at
least
502
seated; how~crer,
if
facili-
ties
are
not
available
for
nmning
in
brushes,
then
the
blush
should
be
seated
by
insertirig
a
strip
of
No..0000
sandpaper
between
the
brush
and
commutator,
with
sanded
side next
to’brusk
Pull
sandpaper
in
the direction
of
rotation,
being~
careful’to
keep
it
in the
same
conture
as
the
commutator.
Caution:
Do
not
use
coarse
sand-
paper
or
emery
cloth.
After
seat-
ing,
de$n
thoroughly
to
remove
all
sand
and
metal
particles
to
prevent
excessive
wear.
Keep
motor
bear-
ing
free from
sand
or
metal
particles.
Dirty
commutator.
Tf
commutator
is
rough
or
dirty,
:smooth
and
polish
with
g0000
sand-
paper.
If
too
rough
and
pitt~d,
re-
move
and
turn
down.
Blow
out
all
particles.
Shorte’d,
grounded,
or
open
3lemove
and
replace
with
an
armature
armature.
known
to
be in
good
condition.
Grounded
or
open
field
Test,
repair
if
possible
or
replace
with
circuit.
I
anewpart
Low
motor
and
Cranking
t~orn.
rough,
or
imyJrop-
Disassemble,
clean,
inspect,
and
fie-
speed
I
erly
lubricated
motor
or
lubricate,
replacing
ball´•bearing
if
starter
$earing.
worn.
Same
electrical
causes
as
Same remedies
listed
for
those
listed
under
"Motor
fails
troubles.
to
operate".
Excessive
arcing
of
motor
i
Binding,
worn,
or
improp-
I.
See
information
above
dealini~
with
bru’shes.
erly
peated
brush’or
this
trouble.
brushes
with
excessive
side
play.
Dirty
commutator,
rough,
Clean
as
outlined
above.
pitted
or
scored.
Excessive
wear
and
arch-
Rough
or
scored
Remove
and
turn
commutator
down
ing
of
motor
brushes,
commutator,
on
lathe.
Armature
assembly
not
Reface
co;nnutator.
concentric.
-61-
OLDWILLWAYNE