Gtx 33; Gdl 69/69A; Gdl 90; Gsa 81 - Garmin G1000 NAV III Line Maintenance Manual

3.7 GTX 33

Removing:
1. Loosen the Phillips screw to unlock unit handle.
2. Pull the GTX 33 lever up towards the top of the unit. This disengages the locking stud with the
dogleg slot.
Installing:
1. Inspect connector(s) for damaged pins.
2. Gently push unit into the rack to engage the connectors.
3. Push the GTX 33 lever down towards the bottom of the unit, avoiding the use of excessive force.
4. If lever fails to go down, adjust backplate while engaging unit.
5. Lock the handle into the GTX 33 body and tighten the Phillips screw.
6. Proceed to Section 4.7.

3.8 GDL 69/69A

Removing:
1. Loosen the Phillips screw to unlock unit handle.
2. Pull the GDL 69/69A lever up towards the top of the unit. This disengages the locking stud with the
dogleg slot.
Installing:
1. Inspect connector(s) for damaged pins.
2. Gently push unit into the rack to engage the connectors.
3. Push the GDL 69/69A lever down towards the bottom of the unit, avoiding the use of excessive force.
4. If lever fails to go down, adjust backplate while engaging unit.
5. Lock the handle into the GDL 69/69A body and tighten the Phillips screw.
6. Proceed to Section 4.8.

3.9 GDL 90

Refer to the applicable aircraft maintenance manual for removal and installation information.

3.10 GSA 81

Removing:
1. Disconnect the connector.
2. Use a socket or open-wrench to loosen and remove the servo attachment bolts.
3. Carefully remove the servo and place a protective cover on the output gear.
4. Place a protective cover over the GSM 85.
Installing:
1. Inspect the output gear for abnormal wear or the absence of grease.
2. Carefully place the servo into the capstan, ensuring proper orientation and alignment.
3. Fasten the servo to the capstan using the existing hardware.
4. Inspect the backshell assembly and connector for damaged pins.
5. Connect backshell assembly to the unit.
6. Proceed to Section 4.9.
G1000 Nav III Line Maintenance Manual
190-00352-00
Page 3-3
Rev. L