Mooney M20K - Page 188

SERVICE
AND
MAINTENANCE
MANUAL
M20K
MOONEY
AIRCRAFT
CORPORATION
GYRO-HORIZON
TROUBLE
SHOOTING
(con’t~
TROUBLE
PROBABLE
CAUSE
REMEDY
Excessive
vibration.
Test
with
vibrometer.
If
amplitude
is
more
than
.004
inch,
examine
installation
to
determine
whether
flexible
hose
connections are
restricting
movement
of
instrument
Shock
mounted
panel
is
Examine
shock
mountings
and
contacting
structures
replace
if
necessary.
(inadequate
clearance).
Horizon
bar
oscillates or
vibrates
Excessive
vacuum
resulting
from
Correct
for
excessive vacuum
as
excessively,
the
following:
follows:
1.Dirtyairfiiter.
i.
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
Re~ble
hose
connections
are
restn’cting
movement
of
instrument.
5.
Shock
mounted
panel
is
5.
Examine
shock
mountings
and
contacting
structure
replace
if
necessary.
(inadequate
clearance).
36´•9040
MISCELLANEOUS
INSTRUMENTS
34-90-02
OUTSIDE
AIR
TEMPERATURE
34-90-01
CLOCK
Provides
the
pilot
with
the
free stream
outside
air
temperature
in
degrees
centigrade.
Various
clock
options
are
available.
The
clock
is
mounted
in
the left
side of the
instrument
panel.
34-90-00
OLDWILLWAYNE