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G1000 System Maintenance Manual
Page 6-7
190-00903-00
Rev.
A
6.15 GDL59/GSR 56
Refer to the GDL 59 Installation Manual for removal and replacement information (190-00836-
00).
6.16 GCU 475/477
The GCU 47X can be integrated into a variety of airframes. Each airframe installation may vary.
Refer to the GCU 47X Installation Manual (P/N 190-00303-75) for installation and removal
information.
6.17 GMC 710/715
The GMC 7XX can be integrated into a variety of airframes. Each airframe installation may
vary. Refer to the GCU 77X Installation Manual (P/N 190-00303-70) for installation and
removal information.
6.18 GWX 68
The GWX 68 is located behind the Radome. To expose the GWX 68 Weather Radar RT unit,
remove the screws holding the Radome per aircraft manufacturers instructions.
Be careful not to
scratch or damage the Radome.
To remove:
1.
Remove the connector on top of the unit
2.
Remove the four mounting bolts. Note shims or washers behind each mounting bolt
location.
To install:
1.
Place the same shims or washers in the same location.
2.
Install the bolts.
3.
Install the connector.
If the GWX 68 unit is removed and reinstalled, verify GWX 68 unit operation after
reinstallation. And, if any work has been done on the aircraft that could affect the system wiring
or any interconnected equipment, verify the GWX 68 unit operation.
To verify the operation of the GWX 68, monitor the multi-function display weather depiction
page and look for display of weather data. The unit must be checked for clearance in all extreme
positions. The wiring harness must be routed and secured in such a way that it can not be struck
by or interfere with unit movement throughout the full range of sweep and tilt.
Special care must be exercised to avoid any contact between any tools that can become
magnetized and the magnetron. Even momentary contact of a potentially magnetic object with
the magnetron case will cause serious weakening of the magnetic field. Use of non-magnetic
tools (typically beryllium copper or titanium) is recommended when installing or servicing the
GWX 68.