Piper COMANCHE PA-24-180 Service Manual page 641

Trouble
Burned-out system am-
meter or line fuse.
PIPER COMANCHE SERVICE MANUAL
TABLE IX-VII. TROUBLESHOOTING (cont)
Couse
Discharged battery.
Repl
c
Defective wiring. Repl
Remedy
lace with a fully
harged battery.
ace all defective wiring.
ALTERNATOR
No output from alternator. Malfunction of alternator,
alternator output circuit
or field circuit.
Check alternator output and
field circuits. Refer to
Paragraph 9-44.
Check alternator. Refer to
Paragraph 9-44.
Check alternator. Refer to
Paragraph 9-44.
Reduced output from
alternator.
Open diode.
STARTER
Motor fails to operate.
Low battery charge.
Check and recharge if
necessary.
Defective or improper
wiring or loose
connections.
Defective starter solenoid
or control switch.
Binding, worn, or improperly
seated brush, or brushes
with excessive side play.
Refer to electrical wiring
diagram and check all
wiring.
Replace faulty unit.
Brushes should be a free fit
in the brush boxes without
excessive side play. Bind-
ing brushes and brush
boxes should be wiped
clean with a gasoline
(undoped) moistened cloth.
ELECTRICAL SYSTEM
ISSUED: 8/18/72
3 F2