PIPER
SENECA
II
SERVICE
MANUAL
10-21. TROUBLESHOOTING.
TABLE X-II. DIRECTIONAL GYRO INDICATOR
Trouble Cause Remedy
Excess drift in either
Setting error.
See
Par. 10-19.
direction.
Defective instrument. Replace instrument.
High
or
low pressure.
If
pressure is
not
correct, check for the
following:
a.
Pressure regulator
a.
Adjust.
improperly adjusted.
b.
Incorrrect gauge
b.
Replace gauge.
reading.
C.
Pump failure.
C.
Repair or replace.
d.
Line kinked or
d. Check and repair.
leaking.
Check for collapsed
inner
wall
of
hose.
Dial spins during turn. Limits (55° bank)
of
Reset gyro
in
level
gimbal exceeded.
flight.
Dial
spins continuously. Defective instrnment.
Replace instrument.
10-22. REMOVAL AND REPLACEMENT. Refer
to
Paragraph 10-72
of
this section.
10-23. GYRO HORIZON.
10-24. GENERAL. The gyro horizon
is
essentially an air driven gyroscope rotating in a horizontal plane
and
is
operated by
the
same principal
as
the directional gyro. Due
to
the gyroscopic inertia, the spin axis
continues
to
point in the vertical direction, providing a constant visual reference to the attitude
of
the
airplane relative to pitch and roll axis. A bar across the face
of
the indicator represents the horizon and
aligning the miniature airplane
to
the horizon bar simulates the alignment
of
the airplane
to
the actual
horizon. Any deviation simulates the deviation
of
the airplane from the true horizon. The gyro horizon
is
marked for different degrees
of
bank.
Reissued:
10/11/79
INSTRUMENTS
2E20
To Next Page
Loading...
