Piper Navajo PA-31 Service Manual page 779

PIPER NAVAJO SERVICE MANUAL
TABLE XI-I. TROLBLESHOOTING
CHART (ELECTRICAL SYSTEM) (cont.)
Trouble
Cause Remedy
Battery life is short Heavy discharge. Replace.
(cont.).
Sulfation due to disuse.
Replace.
Impurities in elec- Replace battery.
trolyte.
Cracked cell. Hold down loose. Replace battery and
Compound on top of
battery
melts.
Electrolyte runs out
of vent plugs.
Frozen battery.
Charging rate too high.
Too much water added
to battery.
tighten.
Replace.
Reduce.
Drain and keep at pro-
per level.
Excessive corrosion
inside container.
Battery freezes.
Spillage from over-
fillings.
Vent lines leaking or
clogged.
Discharged
battery.
Water added and battery
not charged immedi-
ately.
Use care in adding
water.
Repair or clean.
Replace.
Always recharge bat-
tery at least 1/2 hour
when adding water in
freezing weather.
Leaking jar.
Replace.
ELECTRICAL SYSTEM
Revised: 10/12/83
4E5