G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air Page 6-17
190-00716-01 Revision 4
6.25 Standby Battery
Removal:
1. Gain access to the forward avionics compartment in the nose of the aircraft.
2. Unscrew the knurled hold-down nut to allow it to move free of the unit.
3. Remove the battery from the rack.
Reinstallation:
1. Install the standby battery in accordance with the Electrical Equipment Install, Nose Bay drawing
(refer to Master Drawing List, listed in Table 1-2, for specific drawing number). Refer to the
Super King Air 300 or B300 Maintenance Manual, listed in Table 1-2, for access requirements as
needed.
2. If further maintenance is not required, proceed to Section 8.
6.26 Standby Airspeed Indicator
Removal:
1. Remove MFD per Section 6.1.
2. Disconnect pitot-static plumbing from the back of the standby airspeed indicator. Take necessary
precautions to prevent foreign object debris from entering the pitot-static lines during
maintenance.
3. Disconnect the electrical connector from the standby airspeed indicator.
4. Use a Phillips screwdriver to remove the attachment screws from the front of the standby airspeed
indicator.
5. Remove the standby airspeed indicator.
Reinstallation:
1. Reinstallation of the standby airspeed indicator is the reverse of the removal. Reference the Main
Instrument Panel Installation drawing, listed in Table 1-2, for more details.
2. If further maintenance is not required, proceed to Section 8.
6.27 Standby Altimeter
Removal:
1. Remove MFD per Section 6.1.
2. Disconnect pitot-static plumbing from the back of the standby altimeter. Take necessary
precautions to prevent foreign object debris from entering the pitot-static lines during
maintenance.
3. Disconnect the electrical connector from the standby altimeter.
4. Use a Phillips screwdriver to remove the attachment screws from the front of the standby
altimeter.
5. Remove the standby altimeter.
Reinstallation:
1. Reinstallation of the standby altimeter is the reverse of the removal. Reference the Main
Instrument Panel Installation drawing, listed in Table 1-2, for more details.
2. If further maintenance is not required, proceed to Section 8.
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