Rectifier - Test
Positive Diode Check
- Put the multimeter on the diode scale. Connect the multimeter leads between each Positive (+) diode (1) and the B+ stud. The positive diodes are in black color.
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| Illustration 1 | g03224496 |
Positive diode check (1) Positive (+) diode | |
- Record the multimeter reading and reverse the multimeter leads.
- One reading should be "0L" and the other reading should be .4 to .9 volts. If both readings are "0L" or low (0 to .1 volts), the diode is open or shorted, and the rectifier must be replaced.
Negative Diode Check
- Put the multimeter on the diode scale. Connect the multimeter leads between each negative (-) diode (2) and the surface of the rectifier that is not painted. The positive diodes are in silver color.
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| Illustration 2 | g03224556 |
Negative diode check (2) Negative (-) diode | |
- Record the multimeter reading and reverse the multimeter leads.
- One reading should be "0L" and the other reading should be .4 to .9 volts. If both readings are "0L" or low (0 to .1 volts), the diode is open or shorted, and the rectifier must be replaced.
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