190-01115-01 G3X™/G3X Touch™ Avionics Installation Manual
Rev. AV Page 12-3
12.3.2.2 Radio Stack Installation
The GMC 507 Install Rack (115-02774-00) is to be used when installing the GMC 507 unit into a radio
stack. Figure 12-9
shows the various radio stack cutout configurations that will accommodate the Install
Rack.
1. Make sure the left and right front edges of the install rack are flush with the front surface of the
instrument panel.
2. Secure the install rack to a rigid, primary aircraft structure using (qty. 4) #6 100° flat head machine
screws as noted in Figure 12-7
. The screws are inserted from the inside of the installation rack and
may be secured using self-locking hex nuts on the outside.
3. With the pawl latch fasteners retracted, insert the GMC 507 into the Install Rack until the bezel
contacts the front edges of the Install Rack.
4. Using a 3/32" hex drive tool turn each of the two pawl latches clockwise until tightened to
20 +/-2 in-lbs. When tightened, the pawl latches are in the horizontal position (see Figure 12-2).
CAUTION
To remove the GMC from the instrument panel, turn each of the two pawl latches
counterclockwise. After initially breaking the pawl latch loose, continue to loosen while
not exceeding 15 in-lbs of torque.
Figure 12-2. Pawl Latch
12.3.3 Wiring
The 15 pin connector, pins, and backshell supplied in the GMC 507 installation kit are used to add wiring
for the GMC 507.
See Figure 24-1.8
for example interconnect drawing.
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