Quipment Ounting; Dapter Late Ounting Ray Nstallation; Figure 2-1: Gdl 90 Adapter Plate - Garmin GDL 90 UAT Upgrade Instructions

Installation
2.4 E
QUIPMENT
The Capstone Upgrade Installation Kit is intended for the replacement of the old UAT radio and tray
with the GDL 90 and tray in the same mounting holes.
2.4.1 A
DAPTER
Remove the old UAT radio and tray. Install the adapter plate using four 8-32 pan-head screws
(MS35206, AN526 or equivalent) in the same mounting holes used for the old tray. Install the GDL 90
mounting tray on top of the adapter tray using four 8-32 pan-head screws. Refer to Figure 2-1 and Figure
2-2 for the GDL 90 adapter plate and mounting tray dimensions.
After the adapter cable is installed to the mounting tray back plate, route wiring bundle as appropriate.
Use cable ties to secure the cable assemblies and coax to the holes provided in the side of the connector
plate to provide strain relief for the cable assemblies. The cable shields should be grounded directly to a
lug mounted to one of the holes on the side of the connector plate, keeping the ground leads to a
maximum of 3 inches long.
Optional cover is provided for installations that need extra moisture protection. Install cover to aft side
of tray using 4 provided screws.

Figure 2-1: GDL 90 Adapter Plate

2-2
M
OUNTING
P & M
LATE OUNTING
560-1057-00 Rev A
T I
RAY NSTALLATION
GDL 90 Capstone Upgrade Instructions