TM 9-2320-280-34
6-5.2. 400 AMPERE DUAL VOLTAGE AL ERNATOR (12469057) TESTING AND REPAIR (Cont'd)
T
Table 6-H. No-Load Test.
AMPS
28VDC
14VDC
DIAGNOSIS
322-400
21-25
10.5-12.5
Test bench battery is discharged (or defective).
Allow to charge (or replace).
322-400
26-30
13-15
Give time to stabilize while monitoring VOLTS.
If VOLTS rise above normal range (26-30 volts),
regulator and/or tube assembly must be
replaced. If AMPS fall, charging system is OK.
322-400
31-35
15.5-17.5
STOP TEST. Regulator and/or tube assembly
must be replaced. Refer to static testing, task c.
160-238
21-25
10.5-12.5
Alternator and/or regulator must be repaired or
replaced. Refer to table 6-K.
160-238
26-30
13-15
Regulator OK. Refer to table 6-I.
160-238
31-35
15.5-17.5
STOP TEST. Bench malfunction or wiring error.
Change 1
6-44.15
