Testing CB360 Regulator/Rectifier questions

Blarfnugle

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Is there a way to test the regulator rectifier without running the bike? The book shows that it should be possible but I'm getting some strange results. Following the manual screenshotted below. Screenshot 2026-06-28 012416.png

Testing continuity with Klein Tools MM325 Multimeter: No results on any of the terminals in any combination
Fwd/Reverse Bias Test/Diode Test: Each test consisted of putting the prong into the point and testing other points with the opposite prong. So 1+ means the positive prong went into point 1 and the negative prong went into the other points.

1+ : Readings on all other points, point 2 reads .886 and others read .476
2+: No readings
3+ Point 2 reads .483, nothing on other points
4+: Nothing on any points
1-: No readings on any points
2-: point 1 reads .886 and others read .476
3-: Point 1 reads .471 nothing on other points
4-: Point 1 reads .481, nothing on other points

Can someone look at my test results and let me know if this regulator/rectifier is working properly? Not sure what to make of these results because from what I read the charge should flow 1>2>3 and 1>4>3 so I'm not sure why I am getting results between points 2 and 4.

Thanks in advance.
 
The manual appears to have a typo because it doesn't make sense to connect both leads to (2) for the second test. It was also written for analog testers.

Using the diode tester setting on your digital multimeter, 1+ should give the voltage drop for each path. Note that (1) to (3) goes through two diodes, so I would expect the greatest value on that connection. I believe this replaces the "second part" of the manual test regarding continuity, where the typo occurs.

The first test I believe is reverse bias and would be 1- in your notation. This should give OL for all other terminals, still using the code tester setting.

These two tests seem good in your case.

Other tests:
  • 4+ should give a reading for (3) only
  • 2+ should give a reading for (3) only
  • everything else should be OL
Your other results seem anomalous. Can you double check using the diode tester setting only?
 
Many folks dump the separate rectifier and regulator components in favor of modern rec/reg combo units. Sparck Moto offers a compatible unit at a reasonable price, but there is no shortage of alternatives.

I just found my old rectifier and tested it. Seems to be good and matches what I wrote above. My meter doesn't automatically do the voltage reading in diode tester mode, I had to push SEL. But I think on yours it happens automatically.
 
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