TM 5-4310-451-14
5-73.
ALTERNATOR TESTING AND REPAIR (Con’t).
11.
Connect ohmmeter, with a 1j-volt cell, to single connector (47) and to one of three connectors (48) on
semiconductor (27). Set ohmmeter to lowest range scale. Observe reading. Reverse ohmmeter leads to same
two connectors. In one direction, reading should be infinite. In other direction, reading should be finite.
12.
Place rectifier bridge (39) on nonconductive work surface. Slightly separate six tabs at three diode terminals for
testing. Connect an ohmmeter to negative heat sink and to each of three terminals on negative (-) heat sink side.
Record readings. Reverse connectors. One test should give infinite readings and other test should give finite
readings.
13.
Check three terminals on positive (+) heat sink side in same manner. One test should give infinite readings and
other test should give finite readings.
14.
If any reading does not meet specifications, replace rectifier bridge (39).
F.
ASSEMBLY
NOTE
Perform steps 1 through 5 only if items were removed.
1.
Fill roller bearing and plug assembly (45) end with grease and install in slip ring end frame (2).
2.
Install seal (44) In slip ring end frame (2).
3.
Install bearing (18), sealed side down, in drive
end frame (4) until seated.
4.
Position felt seal (19) in retainer (17).
5.
Fill remaining space in retainer (17) with grease
and install retainer on drive end frame (4) with
three screws (20).
6.
Install collar (16) on rotor shaft (5).
7.
Install drive end frame (4) on rotor assembly (3).
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