Extra 300/SC, Maintenance Manual

Page: 58 / 250

CHAPTER 24
PAGE 7
MAINTENANCE MANUAL EXTRA 300/SC
PAGE DATE: 12. February 2019
24-60-00 DC ELECTRICAL LOAD DISTRIBUTION
(Refer to Figure 0 of Chapter 91) From the main bus which
physically corresponds to the bus bar the electrical load is
distributed through circuit breakers and switches.
The bus bar is located at the back side of the circuit breakers,
the circuit breakers themselves are located at the lower rear
instrument panel so as the lever switches. Subminiature
pushbutton switches for the radio are mounted on the
control sticks and the throttle controls.
More information concerning the wiring shows Figure 0 of
Chapter 91.
Maintenance Practices
I M P O R T A N T If replacement of wiring passing the firewall is neces-
sary, renew the sealing of the bushing grooves and gaps
at the engine side of the firewall. Use firewall sealant
as presented in Chapter 51-30-04.
24-60-01 Circuit Breaker
Removal/Installation
N O T I C E Ensure the master switch is in Off-position.
1 Remove the main fuselage cover as per Chapter 51.
2 Loosen the bus bar attachment screws and remove bus bar if
necessary.
3 Disconnect wiring.
4 Remove the attachment nut at the front side of the instru-
ment panel.
5 Remove the circuit breaker.
6 Install in reverse sequence of removal.