TM 5-3805-258-24-2DISASSEMBLY AND ASSEMBLYENGINEDELCO REMY ALTERNATOR TESTINGTools Needed:MultimeterFIELD COIL TESTS1. To check for grounds, connect a test lamp,or an ohmmeter, to one field coil lead and tothe end frame as shown. If the lamp lights orif the ohmmeter reading is low (less than10K), the field coil is grounded.2. To check for opens, connect a test lamp, oran ohmmeter to the field coil leads as shown.If the lamp fails to light, or if the ohmmeterreading is high (infinite), the field coil isopen.3. The windings can be checked for shortedcircuits by connecting a battery and ammeterin series with the field coil. The specifiedfield current is 2.5 to 2.9A at 80°F. Anammeter reading above the specified valueindicates shorted windings.DIODE TESTS1. Check each of the six diodes by removingeach diode lead from the stud and connectingan ohmmeter (set at lowest range) to thediode lead and case. Reverse thr ohmmeterleads to the diode lead and case.2.5-12nIf both readings are the same, replace theregulator assembly. A good diode will haveone high and one low reading.
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