TM 5-4320-302-145-19.ALTERNATOR (CONT)Location/ItemActionRemarksResistance should be infinite in all of the above tests. Ifresistance reading is not infinite in any test, highleakage or a short exists between columix windings, orbetween a columix winding and the lamination. Replacethe columix. Test for columix continuity by connectingohmmeter probes to each pair of the following testpoints:Point A to point A1Point B to point B1Point C to point C1A low resistance reading (approximately 1.0 ohm orless) in each test indicates columix continuity. Infiniteresistance indicates an open winding. Replace columixif it fails any of the above tests or, if alternator has beendisassembled because of an electrical malfunction,replace columix after all other components have beenchecked and found to be satisfactory.28. BearingsInsert rotor shaft into rear ball bearing and rotate rotor.Check for looseness, binding, or noise during rotation,and for other damage. Check front ball bearing in thesame way. Replace faulty bearing.5-71
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