TM-9-2320-280-34 HMMWV Direct Support & General Support Maintenance Manual Download
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TM 9-2320-280-34 6-4. 200 AMPERE ALTERNATOR (A0013036AA) TESTING AND REPAIR (Cont’d) 13. Perform positive rectifier ground test as follows: (a) Set ohmmeter to X1OK scale. Connect one test probe to a bare metal surface on the housing. (b) Connect the second ohmmeter test lead to the positive rectifier mount. An infinity ( ) reading indicates a high resistance. A LESS THAN infinity reading indicates a grounded rectifier mount. The housing must be replaced. 14. Perform rectifier tests as follows: (a) Set an ohmmeter to X1OK scale and connect the NEGATIVE probe to the positive rectifier mount. (b) Connect the POSITIVE probe to each of the three positive rectifier leads. An infinity ( ) reading for any of the three leads indicates a HIGH resistance. The rectifier(s) is defective and the mount must be replaced. 6-24