Mooney M20K - Starter Trouble Shooting

SERVICE
AND
MAINTENANCE
MANUAL
M20K
MOONE/
AIRCRAFT
CORPORATION
Battery
freezes.
Discharged
battery.
Replace
battery.
Water
added
and
battery
not
Always
recharge
battery
for 1/2
charged
immediately.
hour
following
addition
of water
in
freezing
weather.
Leaking
battery
case.
Frozen
electrolyte.
Replace
battery.
Reversed
battery
polarity.
Cables
connected
backwards
on
Battery
should
be
slowly
battery
or
charger,
discharged
completely,
then
charged
corectly
and
tested.
Excessive
water
consumption
Charging
rate
too
high.
Correct
charging
rate.
all
cells.
Excessive
water
consumption
Cracked
jar.
Replace
battery.
one
cell
only.
2639-04
STARTER
TROUBLE
SHOOTING
TROUBLE
PROBABLE
CAUSE
REMEDY
Motor
does
not
operate.
Low
battery.
Check
and
recharge
battery
if
necessary.
Defective,
improper,
or
loose
wire
Refer
to
electrical
win’ng
diagram
connections.
and
check
all
wiring.
Binding,
wom
improperly
seated
BNshes
should
fit
free
in
brush
brushes;
brushes
have
boxes
without
excessive
side
excessive
side
play.
play.
Clean
binding
brushes
and
brush
boxes
with a
Varsol
mo~tened
cloth.
A
new
brush
should
be
run-in
until
at
least
50
percent
seated;
however,
if
facilities
are
not
available
for
Nnning
in
brushes,
seat
brush
by
inserting
a
stn’p
of
No.
.0000
sandpaper’between
brush
and
commutator
with
sanded
side
next
to
brush.
Pull
sandpaper
in
direction
of
rotation,
being
careful
to
keep
it
in
same
contours
as
commutator.
*CAUTION
Do not
use
coarse
sandpaper
or
emery
cloth.
After
seating,
thoroughly
clean
brushes
and
commutator
to
prevent
excessive
wear.
Keep
motor
bean’ng
free
from
sand
or
metal
particles.
Dirty
commutator.
If
commutator
is
rough
or
dirty,
smooth
and
polish
with
No.
0000
.sandpaper.
If
too
rough
and
pitted,
remove
commutator
and
turn
down.
Blow
out
all
foreign
material.
Shotted,
grounded,
or
open
Remove
and
replace
with
an
armature.
armature
known
to
be
in
good
working
order.
24-39-04
15
OLDWILLWAYNE