Piper PA-32R-301T SARATOGA S, Maintenance Manual

Page: 212 / 956

D.C. GENERATION (cont.)
A. Troubleshooting (cont.)
CHART 1
TROUBLESHOOTING (ELECTRICAL SYSTEM) (Sheet 5 of 5)
PIPER AIRCRAFT
PA-32R-301/301T
MAINTENANCE MANUAL
24-30-00
Page 24-7
Reissued: July 1, 1993
1K7
Trouble Cause Remedy
Ammeter indicates 60 amps Short to ground in alterna- Check condition of teflon
at 1400 rpm and above, ALT tor output wiring insulators on feet of diode
annunciator light on. heat sink. When the mount-
ing screws are over torqued
they can cut through insula-
tors causing a short-to-ground.
Check other wiring for chafing, etc.
Excessive ammeter Excessive resistance Check all connections and
fluctuation. in field circuit. wire terminals in field circuit
for deterioration such as loose
binding posts, broken wire
strands at terminals, etc.
Tighten all connections and
replace faulty terminals.
High field circuit If problem persists, jump
resistance. across the terminals of the
following components one at
a time until the faulty unit is
isolated.
a. Field 5-amp (alternator
circuit protector).
b. Alternator switch.
c. Overvoltage relay.
Defective voltage Replace voltage regulator.
regulator.
Faulty grounds. Completely clean all corrosion
from grounding points.