Piper Cherokee Six Service Manual page 552

PIPER CHEROKEE SIX SERVICE MANUAL
TO "BAT"
POSITIVE CASE
61X361
C-3829 RECTIFIERS
Figure
10-6. Testing Rectifiers
(Positive)
the "Y" connection
as is necessary where the test lamp method is used.
Due to the short leads at the "Y" connection
it is quite difficult
to separate
and reconnect
them properly. This tool C-3829 will save much time and is ac-
curate.
Insulate
alternator from
metal bench and plug tester
tool C-3829 into a
110 volt supply.
Connect the alligator
clip of tool C-3829 to the alternator
"BAT"
terminal and touch the bare metal of each of the positive
case rectifier lead wires
in the heat sink at the rectifiers.
The meter reading for each of the rectifiers
should be the same. Always
contact the connection
nearest the rectifiers.
Do not break the sealing
on the rectifier lead wire or on the top of the
rectifiers. The sealing material
is used for corrosion protection.
The reading on the meter
will indicate 1.7 or over for good rectifiers.
Where two of the rectifiers
are good and one is shorted,
the reading taken at the
good rectifiers will show low. The reading at the shorted
rectifier will be zero.
Cut the lead at the bad rectifier
and the reading at the two good rectifiers
will
come up to normal.
Where one of the rectifiers
is open, it will read low (1 amp
or less) the two good rectifiers
will show normal.
ELECTRICAL
SYSTEM
Issued: 8/17/72
3A24