Mooney M20M - Page 212

MOONEY
AIRCRAFT
CORPORATION
M20M
SERVICE
AND
MAINTENANCE
MANUAL
TROUBLE SHOOT1NG
GUIDE
FOR
CLUSTERS
PRESSURE
INSTRUMENTS
GAUGE
CONDITION
CHECK FOR THESE POSSIBIUTIES
Gauge
reads
full
scale
with Wire
between sender
and
gauge
Faulty
sender.
engine
shut down.
disconnected
or
open.
Faulty
Elauge´•
Gauge
reads
zero
when
engine
Wire between sender
and
gauge
Faulty
sender.
is
running.
grounded.
Faulty
gauge.
TEMPERATURE GAUGE CONDITION CHECK FOR THESE
POSSIBIUTIES
INSTRUMENTS
Gauge
reads full scale with Wire
between
sender
and
gauge
Defective
gauge.
engine
cool
or
cold.
grounded.
Defective
senaer.
Gauge
reads
zero
when
engine
Wire
between
sender
and
gauge
Defective
gauge.
is hot.
is
open
or
d~connected. Defective
sender.
FUEL
SVSTEM
GAUGE CONDITION
CHECK
FOR
THESE
POSSIBIUTIES
Gauge
indicates
empty
in the
Grounded
wire between
sender Defective
sender.
tank.
and
gauge.
Inoperative
gauge.
Gauge
indicates
past
full
when
Open
sender
lead.
Open
sender
(open
resistance
tank
is less than
full.
element).
Sender
not
property
grounded
to
airframe.
Gauge
off calibration. Note:
Some
clusters
are
equipped
with fuel
gauges
that
have
trim
pots
and
may
need
re-calibration.
~atUup
indifate~
1R
when tank
On
dual sender
systems,
the
The lead
between
the isolated
sender
isolated sender
may
be
and the
grounded
sender
is
grounded.
grounded.
Either
sender defective.
Gauge
off calibration.
O/B
float
stuck
on
bottom of tank.
381192 LANDING GEAR
SWITCH
The
landing
gear
switch is
a
two
position
switch
located
at
the
top
right
side of the
flight
instrument
panel.
The wheel
shaped
knob
must
be
Pulled
aft
prior
to
raising
or
lowering
the switch
to
activate
the
landing
gear
actuator.
$’Up;
b’i~r
1.
The
glareshield
will
require
removal to
gain
I
access
to
switch
for maintenance action
(refer
to
s
Section
59-10-01).
1
2.
Remove
the
wire
connections
from
the back
of
the
I
landing
gear
switch.
aNI
es,
3.
Turn the
wheel
shaped
knob
counterclockwise to
remove
from
stem.
I
4.
Remove
the
nut
and washer from the
face of the
switch and
push
switch
through
the
panel.
FIGURE
39-5
3411-03 LANDING
GEAR
SAFETY
OVERRIDE SWITCH
The
landing
gear
safety
override switch
is
located
above the
landing
gear
switch.
Proper
operation
of the
lending
gear
safety
system
will
not
allow
the
gear
to
retract
below
65
+7/-4
KIAS.
CAUTION
Activation
of
the
gear
safety
override
switch
LANDING GEAR
SWITCH
3
LANDING
GEAR
SAFETY
while the
aircraft
is
on
the
ground
may
cause
OVERRIDE SWITCH
the
landing
gear
to
retract.
499
39-11-02
OLDWILLWAYNE