Piper Comanche PA-24 Service Manual page 773

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PIPER COMANCHE SERVICE MANUAL
TABLE IX· VII. TROUBLESHOOTING (con')
Trouble
Bumed·out system am-
meter or line fuse.
No output from alternator.
Reduced output from
alternator.
Motor fails to operate.
I
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!
,
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ELECTRICAL SYSTEM
ISSUED:
8/18172
Caus.
Discharged battery.
Defective wiring.
ALTERNATOR
Malfunction of alternator
I
alternator output circuit
or field circuit.
Open diode.
STARTER
Low battery charge.
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.
3 F2
Remedy
Replace with. fully
charged battery.
Replace all defective
Wiring.
Check alternator output and
field circuits. Refer to
Paragraph 9-44.
Check alternator. Refer to
Paragraph ~44.
Check alternator. Refer to
Paragraph
~44.
Check and recharge if
necessary.
Refer to electrical wiring
diagram and check all
wiring.
Replace faulty unit.
Brushes should be a £ree £it
in the brush boxes without
excessive side play. Bind·
ing brushes and brush
boxes should be wiped
clean with a gasoline
(undoDed) moistened cloth.