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Diode Test

  1. Remove rectifier assembly from alternator. Set ohmmeter knob at "10". Calibrate meter. To test 1 set of diodes, contact 1 probe to terminal bolt and contact each of 3 stator lead terminals with other probe. Reverse probes and repeat test.
  2. All diodes should show readings of about 60 ohms in 1 direction, and infinite readings with probes reversed. 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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