Gdl 69A Data Link; Gcu 476; Gsa 81 Autopilot Roll Servo - Garmin G1000 Maintenance Manual

5.10 GDL 69A Data Link

Removal:
1. Remove the PFD as described in Section 5.1.
2. Unlock the GDL 69A handle by unscrewing the Phillips screw.
3. Pull the handle upward to unlock the GDL 69A. Gently remove the GDL 69A from its rack.
Replacement:
1. Visually inspect the connectors to ensure there are no bent or damaged pins. Repair any damage.
2. Gently insert the GDL 69A into the rack. The handle should engage the dogleg track.
3. Press down on the handle to lock the unit into place.
4. Lock the handle to the GDL 69A body using the Phillips screw.
5. Reinstall the PFD as described in Section 5.1.
6. Load software, configure and test the GDL 69A according to Section 6.8.

5.11 GCU 476

Removal:
1. Remove the setscrew securing the keypad with a 3/32
2. While supporting the keypad disconnect the connector.
3. Remove the unit.
Replacement:
1. Connect the connector to the back of keypad.
2. Gently place keypad into position.
3. Secure with setscrew using a 3/32
4. Load software, configure and test according to Section 6.11.

5.12 GSA 81 Autopilot Roll Servo

Removal:
1. Remove the belly access panel.
2. Disconnect servo connector P680 (1P801).
3. Remove the four screws holding servo to servo mount.
4. Remove unit.
5. Remove excess grease build-up from the single servo output gear using a lint-free cloth.
It is not necessary to remove all of the grease from the output gear, only the excess grease. DO
NOT USE SOLVENTS TO CLEAN THE OUTPUT GEAR!
6. Using a brush or other applicator, apply a thin coat of grease to the servo output gear. Use Aeroshell
17 or equivalent (Synthetic Diester, Low Temp; Must meet MIL-G-21164D).
Replacement:
1. Set unit in place.
2. Visually inspect the connectors to ensure there are no bent or damaged pins. Repair any damage.
3. Install the four screws holding the servo to the servo mount.
4. Connect servo connector 2P801.
G1000-Columbia 350/400 System Maintenance Manual
190-00577-03
nd
hex tool and carefully remove keypad.
nd
hex tool. Do not over-tighten.
NOTE
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Revision C