24 - 02 - 00
Page - 24 - 06
Reissued: August 1, 1986
1I5
CHART 2401. TROUBLESHOOTING (ALTERNATOR) (cont)
Battery installed with re- Battery charged backwards. Remove battery. Connect
versed polarity. (cont) load such as landing light
lamp or similar load and dis
charge battery. Recharge
with correct polarity and test
each cell for signs of damage
due to reversed charging.
—NOTE—
This type of condition can
only occur in a case where a
discharged battery has been
rcmovcd from the airplane
and put on a charger with the
polarity reversed This re-
versal in polarity cannot
occur in the airplane due to
any fault in the alternator
system.
Excessive ammeter fluctua- Excessive resistance in field Check all connections and
tion. circuit. wire terminals in field cir
cuit for deterioration such as
loose binding posts, broken
wire strands at terminals, etc.
Tighten all connections and
replace faulty terminals.
High field circuit resistance. If problem persists, jump
across terminals of the fol-
lowing components one at a
time until the faulty unit is
isolated.
a. Field 5 amp (alternator)
circuit protector.
b. Alternator half of master
switch.
c. Overvoltage relay.
Defective voltage regulator. Replace voltage regulator.
Trouble Cause Remedy
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL
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