Battery 24 V - Piper Navajo PA-31 Service Manual

PIPER NAVAJO SERVICE MANUAL
TABLE XI-I. TROUBLESHOOTING
CHART (ELECTRICAL SYSTEM) (cont.)
Trouble Cause
Remedy
Excessive
wear and
arcing of motor
brushes
(cont.).
Armature assembly not
concentric.
Reface commutator.
BATTERY 24 V
Battery will not hold
charge.
Battery worn out.
Charging rate not set
right.
Replace battery.
Reset.
Discharge too great to
replace.
Standing too long.
Equipment left "ON"
accidentally.
Impurities in
electrolyte.
Short circuit (ground)
in wiring.
Broken cell partitions.
Reduce use of starter or
the ground; use exter-
nal power wherever
possible.
Remove and recharge
battery if left in un-
used airplane
one week
or more.
Remove and recharge.
(See Paragraph
11-76.)
Replace battery.
Check wiring.
Replace battery.
Battery life is short. Overcharge due to level
of electrolyte being
below tops of plates.
Maintain electrolyte
level.
Revised: 10/12/83
ELECTRICAL SYSTEM
4E4