Mooney M20R - Fuel System Circuits; Landing Gear Circuits; Lighting Circuits; Low Battery Starting Procedure

SERVICE
AND
MAINTENANCE
MANUAL
MZOR
MOONEY
AIRCRAFT
CORPORATION
A.
LOW
BATTERY
STARTING
PROCEDURE.
OFF)
rocker
switch
on
forward
face
of
hatrack
panel
con-
A
battery
that has
been
discharged
to
the
point
where
1
trols
this
light.
will
not
turn
the
engine
over
buthas
sufficient
power
re-
CAUTION
maining
for
other
equipment;
should
NOT
have
the
en-
The
cabin
and
baggage
interior
ligMs
are
not
gine
jump
started
with
another
power
source
fortwo ma-
connected
to
the
Master
Switch
circuitry
and
can
jor
reasons:
be
operated
with
Master
Switch
in
the
Off
(i)
The
discharged
aircraft
battery
is
not
air-
position.
Care
must
be
exercised
to
prevent
worthy
because
1
will not
have
the
necessary
reserve
leaving
switch(es)
ON
and
discharging
one
of
the
capacity
required
to
operate
the
aircraft
electrical
sys-
batteries.
tem
and
avionics
in
the
event
of
failure
of
the
charging
system
during
flight.
7.
Map
Light.
A
switch/meostat
on
top
of
control
wheel
(2)
Active
material
on
the
positive
plate
expands
controls
the
map
light
and
brightness.
the
cc-pilots
map
when
the
battery
is
discharged
and
the
fast
mcharge
light
is
optional.
from
the
higher
potential
source,
battery,
altemator,
redi-
2436-00
LANDING
GEAR
CIRCUITS
Rer,
etc.,
will
severely
damage
the
battery.
A
slow
charge
is
recommended
prior
to
Right.
i.
Limit
switches
and
relays
operate
the
reversible
The
M?OR
has
a
second
battery
that
may
be
selected
landing
gear
actuator
motor.
A
landing
gear,
air
pres-
as
the
primary
battery
for
a
particular
flight.
The
battery
sure,
safety
switch,
actuated
by
pitot
air
pressure,
pre-
not
being
utilized
will
be
recharged
by
a
trickle
charge
vents
landing
gear
retraction
until
a
safe
flying
speed
is
from
the
aircraft
anemator’s
charging
system.
Therefore,
attained.
The
landing
gear
control
switch
operates
ao-
if
only
one
battery
is
discharged
to
the
point
that
it
will
not
tuator
motor
through
the
safety
switch
and
relays.
When
start
the
eng.ine
the
other
battery
may
be
selected
and
the
landing
gear
control
switch
is UP
and
a
safe
flying
the
flight
continued.
speed
has
been
attained,
the
safety
switch
closes
to
acti-
2.
Oil
and
Cylinder
Head
Temperature
Gauge
Cir-
vate
the
control
relay
and
the
actuator
starts.
As
the
gear
cults.
Both
the oil
and
cylinder
head
temperature
indica-
reaches
the
up
and
locked
position,
a
mechanical
up
tom
operate
electrically.
The
oil
temperature
gauge
cir-
stop
opens
the
limit
switch
and the
actuator
stops.
When
cult
has
a
resistance
bulb
in the
oil
cooler
adapter
adja-
landing
gear
control
switch is
placed
in
the
DOWN
posi-
cent
to
the
vem-a-thenn
valve.
Changes
in
resistance
tion,
the
gear
motor
down-relay
closes
and
the
actuator
caused
by
changes
in
oil
temperature
alter
current
Row
starts.
When
the
gear
reaches
the
down-and-locked
po-
rate,
thereby
varying
the
magnetic
field in
the
indicator
slion,
a
mechanical
down
stop
opens
the
limit
switch
coils.
The
cylinder
head
temperature
indicator
connects
and the
actuator
stops.
The
gear-up
limit
switch
controls
to
a
tip
sensitive
resistance
bulb
in
a
cylinder
head,
nor-
the
landing
gear
un-safe
light.
The
RED
light
comes
on
mally’No.
2
cylinder.
Increase
or
decrease
in
tempera-
when the
gear
is in
transit.
The
green
light
comes
on
ture
causes
an
increase
or
decrease
in
bulb
resistance,
when
the
gear
reaches
the
down-and-locked
position;
varying
the
magnetic
field
in
the
indicator
coils.
the
gear-down
limit
switch
controls
the
green
gear-down
3.
The
oil
pressure
instrument
circuit
contains
an
eleo-
light.
The
GEAR
DOWN
annunciator
light
is
dimmed
trical
instrument
and
a
transducer
which
varies
resis-
whenever
navigation
lights
are
ON.
tance
with
pressure.
2. Gear
Safety
By-Pass
Switch.
The
gear
will not
re-
4.
Fuel
Flow
read
on
the
indicator
uses
an
electrical
in-
trad
if
airspeed
above
the
set
limit
has
not
been
attained
strument
which
counts
electrical
pulses
produced
by
a
when
the
gear
handle
is
placed
in
the
UP
position.
A
turbine
type
fuel flow
transducer.
warning
hom
will
sound
and
both
’GEAR
DOWN"
and
’GEAR
UNSFE"
lights
will illuminate.
PUSH
and
HOLD
243540
LIGHTING
CIRCUITS
the
RED
BUTTON
SWITCH
beside
the
landing
gear
handle
until
the
gear
is
up
and
both
lights
go
OUT.
PULL
i.
Navigation
Lights.
A
circuit
breaker/switch
on
the
the’GEAR
CONT"
or’GEAR
RELAY"
circuit
breaker
to
forward
O/H
panel
controls
navigation
lights.
stop
warning
hem.
Reset
circuit
breaker
prior
to
extend-
2.
Landing/Taxi
Lights.
A
pair
of
split
switches
on
the
ing
gear.
forward
ORlpanel
control
left
and
right
landing
and
taxi
lights
located
in
the
wing’s
leading
edge.
24-07-00
FUEL
SYSTEM
CIRCUITS
3.
Cabin
Lights.
A
three-position
(Bright,
Off,
Dim)
Th,
fuel
system
has
an
electric
fuel
boost
pump.
The
fuel
rocker
switch,
located
in
arm
rests
of side
panels,
beside
quantity
indicating system
is
comprised
of
two
transmit-
each
occupant,
controls
cabin
lights.
ters
in
each
fuel
tank
(inboard
and
outboard)
and
two
fuel
4.
Strobe
Lights.
A
circuit
breaker/switch
on
forward
quantity
gauges
(L
6
R)
in
the
instrument
panel.
O/H
panel
controls
the
white
anti-collision
strobe
lights.
i.
Fuel
Pump
Circuit.
A
single,
auxiliary
electric
5.
Rotating/Flashing
Beacon
Light.
A
circuit
boost
fuel
pump
is
controlled
by
two
switches,
the
LOW
breaker/switchon
forward
O/H
panel
controls
optional
BOOST
switch
is
utilized
for
engine
starting
procedures
beacon.
and
to
purge
fuel
vapors
from
system
during
high
tem-
5.
Recognition
Lights.
A
circuit
breaker/switch
on
for-
perature
conditions,
either
heat
soak
conditions
or
high
ward
ORI
panel
controls
optional
recognition
lights.
OAT.
7.
Instrument
and
Radio
Lights.
Switches are
located
The
HIGH
BOOST
(guarded
switch)
is
utilized
for
use
if
on
the lower
co-pilot’s
control
panel
for
the
glareshield
the
engine
driven
fuel
pump
malfunctions
and
will
pro-
and
radio
lights.
The
glareshield
rheostat
also
controls
vide
sufficient
fuel
for
partial
power
operation
of the
en-
the
compass
light.
Lighting
is
controlled
by
tuming
rotary
gine.
rheostat
switch(s)
to
Intensify
or
dim
either
light
system.
8.
Baggage
Compartment
Lights.
A
two-position
(ON,
REV.
10-98
24-35-00
Island Enterprises