Extra 300LX, Maintenance Manual

Page: 172 / 515

CHAPTER 24
PAGE 14 PAGE DATE: 1. March 2011
MAINTENANCE MANUAL EXTRA 330LX
24-60-00 DC ELECTRICAL LOAD DISTRIBUTION
(Refer to figure 2) The bus bar powers the electrical equip-
ment and accessories furnished on the aircraft. 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 rear instru-
ment panel such as the toggle switches. Subminiature push-
button switches for the radio resp. intercom are mounted on
the control sticks and the throttle controls.
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 PRC-812 (Prod-
ucts Research & Chemical Corporation, USA) firewall
sealant.
24-60-01 Circuit Breaker
Removal/Installation
N O T I C E Disconnect battery
1 Remove the instrument panel cover per chapter 31.
2 Disconnect the tubing from the resp. instruments.
3 Remove the instrument panel attachment screws.
4 Turn down the panel.
5 Loosen the bus bar attachment screws and remove bus bar if
necessary.
6 Disconnect wiring.
7 Remove the attachment nut at the front side of the instru-
ment panel.
8 Remove the circuit breaker.
9 Install in reverse sequence of removal.