B. Install the Slaved Directional Gyro
Detail Steps/Work Items  Key Items/References 
(1)  Put the gyro in position on the mounting plate. 
(2)  Install the screws that attach the gyro to the mounting plate.  Attach the bonding cable to one of the screws. 
(3)  Attach the connector to the gyro. 
(4)  Install the passenger's seat.  Refer to Section 25-10. 
(5)  Do a functional test of the gyro compass system in free and slaved mode. 

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3. Remove/Install the Slaving Control Unit
A. Remove the Slaving Control Unit
Detail Steps/Work Items  Key Items/References 
(1)  Remove the instrument panel cover.  Refer to Section 25-10. 
(2)  Disconnect the 2 connectors from the slaving control unit. 
(3)  Remove 2 screws that attach the slaving control unit to the instrument panel.  Hold the slaving control unit. 
(4)  Remove the unit from the instrument panel. 

B. Install the Slaving Control Unit
Detail Steps/Work Items  Key Items/References 
(1)  Put the slaving control unit in position in the instrument panel. 
(2)  Install the 2 attaching screws. 
(3)  Connect the 2 connectors to the slaving control unit. 
(4)  Install the instrument panel cover.  Refer to Section 25-10. 
(5)  Adjust the compass system.  Refer to Paragraph 6. 

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AMM

4. Remove/Install the Magnetic Azimuth Transmitter
A. Remove the Magnetic Azimuth Transmitter
Detail Steps/Work Items  Key Items/References 
(1)  Open the access panel for the magnetic azimuth transmitter, hold it near the wing.  Hold the panel! The magnetic azimuth transmitter is attached to the panel. 
(2)  Disconnect the connector from the magnetic azimuth transmitter. 
(3)  Move the access panel with the magnetic azimuth transmitter clear of the airplane. 
(4)  Remove the screws that attach the magnetic azimuth transmitter to the panel. 
(5)  Remove the magnetic azimuth transmitter from the panel. 

B. Install the Magnetic Azimuth Transmitter
Detail Steps/Work Items  Key Items/References 
(1)  Install the screws that attach the magnetic azimuth transmitter to the access panel.  Use only the correct (non-magnetic) screws. 
(2)  Put the access panel with the magnetic azimuth transmitter in position. 
(3)  Connect the connector to the magnetic azimuth transmitter. 
(4)  Install the access panel with the magnetic azimuth transmitter to the wing.  Make sure that the mounting slot marked FORE TOP is at the front. 
(5)  Adjust the compass system.  Refer to Paragraph 6. 

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5. Remove/Install the HSI
A. Remove the HSI
Detail Steps/Work Items  Key Items/References 
(1)  Remove the instrument panel cover.  Refer to Section 25-10. 
(2)  Dis-connect the connectors at the rear of the HSI. 
(3)  Remove the screws which attach the HSI to the instrument panel.  Hold the HSI! 
(4)  Remove the HSI from the instrument panel. 

B. Install the HSI
Detail Steps/Work Items  Key Items/References 
(1)  Put the HSI in position in the instrument panel. 
(2)  Install the screws which attach the HSI to the instrument panel. 
(3)  Connect the connectors at the rear of the HSI. 
　
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