Piper PA-24 Comanche Service Manual page 639

PIPER COMANCHE SERVICE MANUAL
TABLE IX-VII. TROUBLESHOOTING
(cent)
Troubl.
eau••
R•••
y
Generator operatina Loos. or kip-resi.tance
Ct••n aDd tiabt.n aU
within. rated speed
electrical connectioa•.
electrical connections.
ranee but voltap
output low. (cant)
Bruhn uees.ively wom.
Whea brush wears down to
1/2 inch. replace with
a aew on••
CAUTION
Do aot us. abrasives
of any deSCription
in
s.atine the brushes.
Brush•• bindinl
in
the 1ft. brushe. should
be a free
brush bozos.
fit without excessive side
play in the brush boxes.
Bindinl bruahes and the
brush bozes should be
Wiped clean with a cloth
IDoistened
in
Varsol or
Ilftdoped easoline.
Excessive side play of Replace the brushes as
brushes in brush boxes. outlined above.
Brushes not properly
Reseat brushes as outlined
seated. abov•.
Low brush sprine t.llsion. Brush sprine should bear
centrally on the top of
the brushes. insurine full
brush contact
wit~
the
face of the COlDaautators.
Dirty commutator. Clean the commutator with
a cloth moistened in
Varsol or undoped
Cas,>
lin•.
Scored or pitted com-
Tum down commutator or
mutator.
replace armature.
-.
ELECTRICAL SYSTEM
ISSU ED: 8/18n2
3
E24
•
•
•