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Diode Assembly

  1. Remove diode (rectifier) assembly from generator. Check for continuity in both directions by reversing test probes between terminal "B" and terminals P(1), P(2), P(3) and P(4). Check for continuity in both directions between diode terminal "E" (ground) and terminals P(1), P(2), P(3) and P(4). See Fig 1 .
  2. All diodes should show continuity in one direction and no continuity in opposite direction. If any diode does not test as specified, replace entire diode (rectifier) assembly.
Fig 1: Testing Diode (Rectifier) Assembly
G90F04034Courtesy of ISUZU MOTOR CO.
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