TM 9-2320-280-34
6-3.2. 100 AMPERE ALTERNATOR (12342944) TESTING AND REPAIR (Cont'd)
7.
Perform full-load test. Set test battery stand circuit selector to 24 VDC, IGN switch to ON, start
varidrive, and set the 100A load bank switch to ON. Snap the load bank master switch to the ON
position and adjust variable load control to 9110 percent amp load. Observe the DC output
readings. Refer to table 6-A.1 for diagnosis.
Table 6-A.1. Full-Load Test.
AMPS
VOLTS
DIAGNOSIS
High
Low
Test bench battery is discharged (or defective).
Allow to charge (or replace).
High
Normal
Charging system OK.
High
High
STOP TEST. Regulator and/or tube assembly must
be replaced. Refer to Static Testing.
Low
Low
Alternator and/or regulator must be repaired or
replaced. Refer to table 6-A.2.
Low
Normal
Increase load.
Low
High
STOP TEST. Test bench malfunction or wiring error.
6-18.18
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