190-01115-01 G3X™/G3X Touch™ Avionics Installation Manual
Rev. AV Page 16-6
16.5 Unit Installation
Fabrication of a wiring harness is required. Sound mechanical and electrical methods and practices should
be used for installation of the GSA 28. Refer to Section 2.3
for wiring considerations, and to Section 23.12
for pinouts.
Connector kits include backshell assemblies. Garmin’s backshell connectors give the installer the ability to
quickly and easily terminate shield grounds at the backshell housing. The instructions needed to install the
Jackscrew Backshell are located in Section 22
.
16.5.1 Pinouts
See Section 23.12
for pinout information.
16.5.2 Mounting Requirements
WARNING
It is vital to make sure the autopilot servo and aircraft control linkage is free to move
throughout its entire range of travel without binding or interference. Failure to provide
adequate clearance between the moving parts of the control system linkage and nearby
structure could result in serious injury or death. If any control system binding or
interference is detected during installation or preflight inspection, it must be corrected
before flight.
CAUTION
Do not mount the GSA 28 on the ‘hot’ side (engine side) of the firewall, or in any location
where it would be exposed to radiated heat from the engine.
16.5.2.1 Optional Attachments
The GSA 28 is supplied from the factory with a standard crank arm attachment (Figure 16-2
,
Figure 16-8.1
, Figure 16-8.2, and Figure 16-8.3). Also available are a long crank arm supplied in the
011-02952-10 RV-6 roll kit and a capstan attachment available in the 011-02952-02 Capstan Kit. If one of
these optional attachments will be used, it is up to the installer to remove the standard crank arm and
replace it with the optional attachment. When removing the standard arm, keep the castle nut, lock washer,
and flat washer as these items will need to be re-used with the optional attachment. Discard cotter pin that
was removed from the GSA 28 and replace with pin provided with optional attachment. Refer to
Figure 16-8.3
and Figure 16-8.4 for more details and instructions for tightening the castle nut.
WARNING
Cotter pins supplied with GSA 28 are only intended for one time use. If removed from GSA
28 discard and use new cotter pin.
WARNING
Do not use crank arm attachments to actuate cable driven controls. A Capstan attachment
should be used for this purpose.
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