Piper Cherokee Six - Page 610

Same electrical causes
as listed under "Mo-
tor fails to operate."
PIPER CHEROKEE
SIX SERVICE MANUAL
TABLE X-III.
ELECTRICAL
SYSTEM TROUBLESHOOTING
(cont.)
Trouble
Cause
Remedy
Motor
fails to operate
(cont)
Shorted, grounded,
or open arm-
ature
Remove and
replacewith
an armature known to
be in good
condition.
Grounded or open field
circuit.
Test, repair if possible
or replace with a
new part.
Low motor and crank-
ing speed.
Worn,
rough,
or im-
properly
lubricated
motor or starter
gearing.
Disassemble, clean, in-
spect, and relubricate,
replacing
ball
bear-
ings if worn.
Same remedies listed
for these troubles.
Excessive arcing of
motor brushes.
Binding, worn, or im-
properly seated brush
or brushes with ex-
cessive side play.
See information
above
dealing
with
this
trouble.
Dirty commutator, rough,
pitted or scored.
Clean as outlined above.
Excessive wear and
arcing of motor
brushes.
Rough or scored com-
mutator.
Remove
and turn
com-
mutator down on a
lathe.
Armature assembly
not concentric.
Reface
commutator.
ELECTRICAL
SYSTEM
Issued:
8/17/72
3D10