Mooney M20M - Clock; Miscellaneous Instruments; Outside Air Temperature

SERVICE
AND
MAINTENANCE
MANUAL
M20M
MOONEY
AIRCRAFT
CORPORATION
GYRO
HORIZON
TROUBLE
SHOOTING
(con’t.)
TROUBLE
PROBABLE CAUSE
REMEDY
Excessive vibration.
Test
with vibrometer.
If Examine
shock
mountings
and
replace
amplitude
is
more
than
.004
if
necessary.
inch,
examine
installation
to
determine
whether
flexible hose
connections are
restricting
movement
of
instrument.
Horizon bar
oscillates
or
Excessive
vacuum
resulting
Correct for
excessive
vacuum as
vibrates
excessively.
from
the
following:
follows:
1.
Dirty
air
filter.
1.
Examine
filter and clean
or
replace
if
necessary.
2.
Vacuum
regulating
valve
2.
Adjust
valve.
improperly
adjusted.
3.
Defective
mechanism.
3.
Replace
instrument.
4.
Excessive
vibration.
4.
Test with
vibrometer.
If
amplitude
is
more
than
.004
inch,
examine
installation
to
determine
whether
flexible hose
connections
are
restricting
movement
of instrument.
5.
Shock
mounted
panel
is
5.
Examine
shock
mountings
and
contacting
structure
replace
if
necessary.
(inadequate
clearance).
34-90-00
-MISCELLANEOUS
INSTRUMENTS
34-90-01
CLOCK
34-90-02
OUTSIDE
AIR
TEMPERATURE
The
digital
clock
is
mounted
in
the
upper
left
side of the
Provides
the
pilot
with the
free
stream
outside
air
instrument
panel.
temperature
in
degrees
centigrade.
34-90-00
4-99
10
OLDWILLWAYNE