Piper Comanche PA-24 Service Manual page 668

PIPER COMANCHE SERVICE MANUAL
A.1l
BLAST TUSE - _ _ _
COMMUTATOR --:::---..
TERMINALS
_,,==~~
BALL BEARING
OIL SEAL
ARMATURE
COMMUTATOR
END FRAME
COVER BAND
FIGURE 9·2. SECTIONAL VIEW OF GENERATOR
~enerator
output. Excessive belt tension will cause rapid belt and bearing wear. Check the tension
of a new be
It 2S
hOlus after
installation. Proper adjustment should allow,
at
midpoint
between
?ulleys. a depression of approximately 114·3/8 of an inch.
(f
the
depression
in
the belt does not
tall within the given limits. readjust. Thereafter, the belt tension should be checked every 100
hours.
9-8. Shunt Generator Output. The maximum output of shunt generators is determined
by
the cur-
rent setting of the current regulator with which the shunt generator is used. Checking of this
setting is discussed in the applicable regulator bulletin.
9-9. Checking
D.fective
Generators. If the lenerator.recuiator system does not perform according
to specificatIons (generator does not produce rated output or produces exceSSIve output), and the
trouble has been isolated in the generator itself by following tbe procedure outlined in paragrs;:Ih
9-5. the generator may
be
checked further as follows to determine the location of trouble in the
ienerator.
9-10. No Output.
a. II the generator will not produce any output, remove the cover band and check the commu·
ELECTRICAL SYSTEM
ISSUED: 8/18n2
3 Al6