6-3.2. 100 AMPERE ALTERNATOR (12342944) TESTING AND REPAIR (Cont'd)
Perform no-load test. Set test stand battery circuit selector to 24 VDC, IGN switch to ON, and start
Table 6-A. No-Load Test.
Test bench battery is discharged (or defective).
Allow to charge (or replace).
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.
STOP TEST. Regulator and/or tube assembly must
be replaced. Refer to Static Testing.
replaced. Refer to table 6-A.2.
Regulator OK. Refer to table 6-A.1.
STOP TEST. Bench malfunction or wiring error.