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Diode Test

  1. Remove rectifier assembly from alternator. Set ohmmeter to x10 range. To test one set of diodes, contact one ohmmeter probe to terminal bolt and contact each of three stator leads with other probe. Reverse probes and repeat test. All diodes should show readings of approximately 60 ohms in one direction and infinite readings with probes reversed.
  2. Repeat test for other set of diodes, moving first probe to other terminal screw. If meter readings are not as specified, replace rectifier assembly.
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