PIPER AIRCRAFT, INC.
PA-28-161, WARRIOR III
MAINTENANCE MANUAL
PAGE 6
Nov 30/06 2D22
24-30-00
CHART 1 (Sheet 3 of 5)
TROUBLESHOOTING ALTERNATOR SYSTEM
Trouble Cause Remedy
Output indicated on Open rectifier. If any of the six rectifiers
ammeter does not meet pressed into the rear bell
minimum values specified housing of the alternator
in alternator test, 24-30-00. open up internally, it will
(cont.) result in a definite limitation
on the current that can be
drawn from the alternator.
After having checked the
previous causes of low
output it can be assumed
that a faulty rectifier exists.
See Inspection and Testing
of Components.
Field circuit breaker trips. Short circuit in field Disconnect field wiring at
circuit. terminal of alternator.
Turn ON master switch.
If breaker continues to trip,
disconnect each leg of field
circuit, working from
alternator towards the
circuit breaker until breaker
can be reset and will hold.
Replace component or wire
which was isolated as
defective. (See wiring
schematic, Chapter 91.)
Short circuit in field Disconnect field wiring at
winding of alternator. terminal of alternator.
Turn ON master switch.
Reset breaker, and if
breaker fails to trip, this
isolates short circuit to field
of alternator itself.
Check brush holders for
shorting against frame.
If there are no obvious
signs of a physical short
circuit at field terminal or
brush holder, replace
alternator.
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