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) (d) Connect ohmmeter probes to diode trio panel leads #8 and #1. If ohmmeter needle deflects and then climbs to HIGH resistance (100,000 ohms or higher), then capacitor is acceptable. If needle does not deflect, then reverse test probes. If needle defects and then climbs to HIGH resistance then capacitor is acceptable. If needle does not deflect, or if it shows LOW resistance (less than 100,000 ohms), then capacitor is defective and diode trio/brush holder assembly must be replaced. (e) Connect ohmmeter probes to diode trio panel leads #8 and #1. If ohmmeter needle deflects and then climbs to HIGH resistance (100,000 ohms or higher), then capacitor is acceptable. If needle does not deflect, then reverse test probes. If needle deflects and then climbs to HIGH resistance then capacitor is acceptable. If needle does not deflect, or if it shows LOW resistance (less than 100,000 ohms), then capacitor is defective and diode trio/brush holder assembly must be replaced. (f) Inspect leads #8, #10, and #11. Replace defective leads. 18. Inspect brushes. If brushes are burned, cracked, or broken or if they are less than 3/16" long, then diode trio/brush holder assembly must be replaced. (a) Inspect brush holder. If it appears damaged, replace diode trio/brush holder assembly. (b) Press each of the two brushes all the way into the brush holder, then allow them to return to their original position. Replace diode trio/brush holder assembly if any of the following conditions exist: (1) either brush does not move freely in and out of brush holder (2) little or no spring tension is noted 6-28