Testing Rectifiers (Negative) - Piper Cherokee Six Service Manual

61X362
C3829
Figure 10-7.
Testing Rectifiers
(Negative)
10-10. TESTING RECTIFIERS (NEGATIVE).
To test the negative case rectifiers
in the end shield,
connect the alligator
clip of tool C-3829 to the end shield.
Touch the test prod to the bare wire of the rectifier
leads at the rectifiers
in the end shield. The meter will indicate the condition of the rectifier.
The test indications
are the same for the negative case rectifiers
in the
end shield as they are for the positivecase
rectifiers
in the heat sink. However
the meter will read at the opposite end of the scale.
NOTE
If all three of the negative
rectifiers read low, before
condemning the rectifiers,
test for a grounded stator.
A grounded stator
will cause the negative
rectifiers
(in the end shield) to read low.
NOTE
A common cause of an open or a shorted
rectifier is
a defective capacitor or a battery that has been installed
ELECTRICAL
SYSTEM
Issued: 8/17/72
PIPER CHEROKEE SIX SERVICE MANUAL
3B1