G3X Equipment Removal & Reinstallation; Gdu 4X0 - Garmin G3X Touch Maintenance Manual

6. G3X EQUIPMENT REMOVAL & REINSTALLATION
This section contains basic procedures for removing and reinstalling G3X LRUs.
The G3X Touch EFIS equipment part numbers approved by STC SA01899WI are in the G3X Touch EFIS
Part 23 AML STC Installation Manual (190-02472-01).
NOTE
Once an LRU is replaced, software loading and testing is required. See Section 7 for the software
loading and testing procedures for a replacement LRU.
CAUTION
Always ensure aircraft power is off or LRU circuit breaker is open when removing and/or replacing an
LRU. Unplug any auxiliary power supplies
NOTE
Ensure all LRU mounting hardware removed is retained for reinstallation. If hardware needs to be
replaced, reference G3X Touch EFIS Part 23 AML STC Installation Manual (190-02472-01) appropriate
hardware part numbers.

6.1 GDU 4X0

Removal:
1. Power OFF the aircraft to remove power from the GDU and other LRUs.
2. Using a 3/32" hex tool, rotate all four fasteners counter-clockwise to remove them.
3. Carefully remove the display from the panel.
4. While supporting the display, disconnect all connectors and the GSU 25D without disconnecting the
pitot/static lines (if installed on back of GDU, as defined in Section 6.2).
Reinstallation:
1. Inspect the connector and pins (on the unit) for signs of damage.
2. While supporting the display, connect the connectors to the rear of the unit and GSU 25D if installed
on the back of GDU (as defined in Section 6.2).
3. Carefully insert the display into the panel cutout and align fasteners with the corresponding holes.
Do not use excessive force while inserting the display.
4. Using a 3/32" hex tool, insert screws and rotate clockwise to tighten and torque to 8 ±1 in-lbs. to
secure display to the instrument panel.
5. Continue to section 7.1 for configuration and checkout procedures.
Maintenance Manual
G3X Touch EFIS Part 23 AML STC
Page 61
190-02472-02
Revision 2