Gtx 33( ) Or Gtx 3000 Transponder; Gdc 7400 Air Data Computer - Garmin G1000 System Maintenance Manual

6.5

GTX 33( ) or GTX 3000 Transponder

GTX 33() Removal:
Gain access to the avionics shelf in the tail area.
1.
Unlock the GTX 33( ) handle by loosening the Phillips screw on the handle.
2.
Pull the handle upward to unlock the GTX 33( ). Gently remove the unit from the rack.
3.
GTX 33() Reinstallation:
Visually inspect the connectors to ensure there are no bent or damaged pins. Repair any damage.
1.
Gently insert the GTX 33( ) into its rack. The handle should engage the dogleg track.
2.
Press down on the GTX 33( ) handle to lock the unit into the rack.
3.
Lock the handle to the GTX 33( ) body using the Philips screw.
4.
Configure and test the GTX 33( ) according to Section 7.5.
5.
GTX 3000 Removal:
Gain access to the avionics shelf in the tail area.
1.
Pull back on the lockdown mechanism and simultaneously turn counterclockwise until free.
2.
Disengage the lockdown mechanism collar from the GTX 3000 hook and gently slide the GTX
3.
3000 from the mounting rack.
GTX 3000 Reinstallation:
Visually inspect the connectors to ensure there are no bent or damaged pins. Repair any damage.
1.
Place the GTX 3000 on the mounting rack.
2.
Slide the GTX 3000 back until the foot is fully engaged with the mounting rack.
3.
Lift the lockdown mechanism collar in plance on the GTX 3000 hook and hand turn lockdown
4.
mechanism knobs clockwise until the GTX 3000 is secure.
Configure and test the GTX 3000 according to Section 7.5.
5.
6.6

GDC 7400 Air Data Computer

Removal:
1. Gain access by removing the appropriate GDU 1040A display unit (see Section 6.1.)
2. Disconnect the pitot/static plumbing from the rear of the unit. Disconnect the single connector.
3. Loosen each thumbscrew on the hold-down clamp and remove the clamp.
4. Carefully remove the unit from its mount.
Reinstallation:
1. Inspect the connector and pins for damage. Inspect the pitot/static plumbing for damage. Repair
any damage.
2. Place the unit in the mounting tray. Position the locking clamp and fasten using the thumbscrews.
3. Connect the backshell assembly and pitot/static plumbing to the unit.
4. Configure and test the GDC 7400 according to Section 7.6.
5. Reinstall the GDU 1040A display unit.
Page 6-4
Revision 4
G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air
190-00716-01