Tecnam P2002 JF - Directional Gyro Replacement

Page 206 2
nd
Edition – Rev 0
34-20
ATTITUDE AND HEATING – MAINTENANCE PRACTICE
4. DIRECTIONAL GYRO REPLACEMENT
Step
no.
Directional gyro replacement
Task description
Additional info &
References
1.
Make sure Master Switch is set to OFF position
2.
Remove the instruments panel upper cover
3.
Disconnect gyro instrument electrical wires
4.
Unscrew the attaching screws which fix the
instrument to the aluminum panel
Hold firmly the instrument by
hand during removal
5.
Clear of the instrument of the instrument panel
6.
Place into position the new/overhauled unit in
correspondence of the instrument panel cut-out
7.
Install the attaching screws which fix the
instrument to the aluminum panel
Hold firmly the instrument by
hand during installation. Do
not over tighten screws to
avoid instrument case
damage
8.
Connect instrument electrical wires at the rear of
the instrument
Be sure that the electrical
cables don’t have radius of
curvature too small, the
instruments may not operate
correctly
9.
Install the instruments panel upper cover
10.
Make sure instr. breaker is inserted
11.
Set Master Switch to ON position
12.
Check alignment between directional gyro and
magnetic compass less than ±5°
For discrepancies larger then
±5° is recommended to
replace instrument