80-00-02
Page 80-03
December 1, 1978
3G14
CHART 8001. TROUBLESHOOTING (STARTER) (cont)
Trouble Cause Remedy
Motor fails to operate. Dirty commutator. If commutator is rough or
(cont) dirty, smooth and polish
with number 0000 sand-
paper. If too rough and
pitted, remove and turn
down. Blow out all parti-
cles.
Shorted, grounded, or Remove and replace with
open armature. an armature known to be
in good condition.
Grounded or open field Test, repair if possible or
circuit. replace with a new part.
Low motor and cranking Worn, rough, or improp- Disassemble, clean, in-
speed. erly lubricated motor or spect, and relubricate,
starter gearing. replacing ball bearings
if worn.
Same electrical causes as Same remedies listed for
listed under “Motor fails these troubles.
to operate”.
Excessive arcing of motor Binding, worn, or im- See information above deal
brushes. properly seated brush or ing with this trouble.
brushes with excessive
side play.
Dirty commutator, rough, Clean as outlined above.
pitted, or scored.
Excessive wear and arcing Rough or scored commu- Remove and turn commu-
of motor brushes. tator. tator down on a lathe.
Armature assembly not Reface commutator.
concentric.
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL
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