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G1000 System Maintenance Manual - Hawker Beechcraft G36 Page 6-5

190-01259-00 Rev. 5

6.6 GMU 44 Removal & Replacement

Removal:

1. Make sure all airplane electrical power is disconnected.

2. Remove the square access panel (left wing top).

3. Unscrew the three screws that hold the GMU 44 to its mounting rack.

4. Carefully lift the GMU 44 from its mounting rack.

5. Disconnect the airplane harness connector from the GMU 44 electrical connector.

6. Place protective caps on the GMU 44 connector and on the harness connector.

7. Remove the unit from the airplane.

Reinstallation:

1. Remove the protective caps from the GMU 44 electrical connector and its associated

airplane harness connector. Visually inspect the electrical connectors to make sure there

are no bent or damaged pins. Repair any damage.

2. Connect the airplane harness connector to the GMU 44 electrical connector.

3. Lower the GMU 44 into the locator pins on the mounting rack. Make sure the GMU 44

direction arrow aligns with the mounting rack direction arrow.

CAUTION

It is recommended that new screws are used to secure the GMU 44 to

the mounting rack. If the original screws must be re-used, coat the screw

threads with Loctite 242 (blue) thread locking compound to restore their

anti-rotational properties.

Securing screws MUST be non-magnetic.

4. Secure the GMU 44 to the mounting rack with three phillips screws.

5. Make sure the location of the electrical connector and the routing of the associated

electrical wire harness are as noted in the removal process.

6. Make sure all tools and equipment are removed from the area.

7. Install the square access panel (left wing top).

8. No software or configuration loading is required if the removed GMU is reinstalled. This

does not include units that were returned for repair as their software and configuration

files are deleted during the repair testing process. Proceed to Section 8.

9. If a new, repaired, or exchange GMU is installed, the correct software and configuration

files must be loaded to the unit. See Section 3.7 then continue to Section 8.

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Garmin Software Version 0858.09 Bedienerhandbuch Seite 59