Piper CHEROKEE WARRIOR PA-28-151 1995 Maintenance Manual page 375

PIPER CHEROKEE WARRIOR SERV I C E M A N U A L
TABLE XI-I. TROUBLESHOOTING ELECTRICAL SYSTEM (cont.)
Trouble
Low motor and cranking speed.
Excessive arcing of motor brushes.
Excessive wear and arcing of
motor brushes.
Discharged battery.
Revised: February 28, 1995
Cause
STARTER (cont.)
Worn, rough, or improperly lubri-
cated motor or starter gearing.
Same electrical causes as listed
under M O TOR FAILS TO
OPERATE.
Binding, worn, or improperly
seated brush(es) or brushes with
e xcessive side play.
D i r t y, rough, pitted or scored
commutator.
Rough or scored commutator.
Armature assembly not c o n c e ntric.
BATTERY
Battery worn out (dead).
Low electrical system voltage.
Battery left standing too long.
Equipment left on accidentally.
Impurities in electrolyte.
Short circuit (ground) in wiring.
Broken cell partitions.
(Continued on next page)
2D16
Island Enterprises
Remedy
Disassemble, clean, inspect, and
lubricate. Replace worn ball
bearings.
Same remedies as listed for those
CAUSES.
See REMEDY information above
for these CAUSES.
Clean or turn down commutator
as outlined above.
R e m o v e a n d t u r n
c o m m utator on a lathe.
Reface commutator.
Install new battery.
Check regulator input voltage
from alternator and output
v o l tage to battery.
Remove and charge battery if left
in unused airplane 3 weeks or
more.
Remove and charge.
Install new battery.
Check wiring.
Install new battery.
ELECTRICAL SYSTEM
d o w n