TM 10-3930-669-20 VERIFY REPAIR (1)   Start engine (TM 10-3930-669-10). (2)   Observe ammeter. (a)   If   ammeter   does   not   give   correct reading, fault not corrected. Perform   Step   (3)   below.      Repeat procedure and notify Supervisor. (b)   If   ammeter   gives   correct   reading, fault corrected. (3)   Shut down engine. 2-137