TM 9-2320-289-34
4-2.
ALTERNATOR TESTING AND REPAIR (ALL EXCEPT M1010) (Con’t).
11. Connect ohmmeter, with a 1 1/2 volt
cell, to single connector (47) and to 1
of 3 connectors (48) on diode trio
(20). Set ohmmeter to lowest range
scale. Observe reading. Reverse
ohmmeter
l e a d s to
same
2
connectors. In
one
direction,
readings should be infinite, in other
direction readings should be finite.
12.
13.
14.
Place
rectifier
bridge
(7)
on
nonconductive work surface, Slightly
separate 6 tabs at 3 diode terminals
for testing. Connect an ohmmeter to
negative heat sink and to each of 3
terminals on negative (-) heat sink
side.
Record
readings.
Reverse
connectors. One test should give
infinite readings and other test should
give finite readings.
Check 3 terminals on positive (+)
heat sink side in same manner. One
test should give infinite readings and
other test should give finite readings.
If
any
reading
does
not
meet
specifications,
replace
rectifier
bridge.
TA50781
4-9
