Tuesday, 10 November 2020

How to test a motorcycle regulator rectifier

First ill show a quick test on diodes inside you regulator rectifier .

You are just checking current flow through the regulators diodes in forward and reverse bias.

Most regulators are the same you just have to find the right pins for each diode ad test them in both forward and reverse.


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How to test motorcycle regulator rectifier









How to test motorcycle regulator rectifier

I usually face the regulator this way and test as below 

How to test motorcycle regulator rectifier

Connect + side of meter to bottom left hand pin/ connector and negative or common to
upper left hand pin you should get a reading of 0.6 or just under here i get 0.512 so happy with that.


How to test motorcycle regulator rectifier

swap the leads around and you should get 0L on the meter meaning current is
flowing one way and not the other and diode inside regulator is fine.

How to test motorcycle regulator rectifier

Now do the same but on the far right hand side pins/ connectors 
test both ways again you should get 0.6 or close to it one way and 
OL the other again testing the diode.


How to test motorcycle regulator rectifier
Now test between the R/H lower pin and centre you should get a reading one way and not the other my reading is 1.172 and its a good rectifier regulator and show diode working 

How to test motorcycle regulator rectifier

How to test motorcycle regulator rectifier

How to test motorcycle regulator rectifier

Now test between the L/H lower pin and upper centre pin you should get a reading one way and not the other my reading is 1.181 close to above reading  and its a known good rectifier regulator and shows diode working 

How to test motorcycle regulator rectifier

Video below of me testing a regulator below



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