Equipment Mounting - Remote Mount Units; Antenna Installation - Garmin GTX 3x5 Series Installation Manual

heads or other obstructions prevent the unit from fully engaging in the rack, see
section 6.3. Exercise caution when installing the rack in the instrument panel.
Deformation of the rack may make it difficult to install and remove the GTX 3x5.
2. Install the rack in the aircraft panel using six #6-32 flat head screws and self locking nuts. The
screws are inserted from the inside through holes in the sides of the rack.
3. To attach the backplate to the rack, align the backplate so that the backplate screw heads pass
through the keyed holes in the back of the rack.
4. Slide the backplate to the left (viewing from the front of the unit) until it clicks into place. Secure
the backplate by tightening the four #4-40 screws.
4.5.2 Unit Insertion and Removal
NOTE
Prior to placing the unit in the rack, in order to ensure correct position of the retention
mechanism, it may be necessary to insert the hex drive tool into the access hole and turn
the drive tool counterclockwise until it completely stops.
CAUTION
The application of hex drive tool torque exceeding 15 in-lbs can damage the locking
mechanism.
Insertion
1. The GTX 3x5 unit is installed in the rack by sliding it straight in until it stops, approximately
3/8 inch short of the final position.
2. Insert a 3/32" hex drive tool into the access hole at the bottom of the unit face.
3. Turn the hex tool clockwise while pressing on the left side of the bezel until the unit is seated in the
rack
Removal
1. Insert the hex drive tool into the access hole on the unit face.
2. Turn hex drive tool counterclockwise until the hex drive tool stops.
3. Pull the unit from the rack.
4.5.3 Unit Replacement
Whenever the GTX 3x5 is removed or reinstalled, verify that it powers up successfully.

4.6 Equipment Mounting - Remote Mount Units

4.7 Antenna Installation

4.7.1 Transponder Antenna
4.7.2 GPS Antenna
190-01499-02
Rev. 1
GTX 3x5 TSO Installation Manual
Page 4-2