Alternators - DELCO-REMY With Separate Regulator: Overhaul: Testing: Rotor

To test for grounds, connect a I 10 volt test lamp or ohmmeter from either slip ring to rotor shaft or rotor poles. If lamp lights or if ohmmeter reading is low, field windings are grounded. To test for open circuit, connect test lamp or ohmmeter to each slip ring. If lamp does not light or if ohmmeter reading is high, windings are open. To test for short circuit, connect a 12 volt battery and ammeter in series with slip rings. If ammeter reading is higher than specified, (see Specification Table), field windings are shorted. Replace rotor assembly or field windings as necessary.