How To Test a 3 Phase Regulator/Rectifier

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Regulators / Rectifiers play a crucial part in providing DC current to your machine, but when do you know if your rectifier is bad or not? In this video we demonstrate how to test to see if your OEM rectifier/regulator needs replaced. The rectifier part inside the regulator-rectifier takes care of converting the AC-current to the DC-current the battery needs. When looking for new electrical components Rocky Mountain ATV/MC has got you covered.

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[robbiegirosky]

Saved many customers money by replacing a faulty rectifier vs replacement of "thought bad" stator. Great video

[midsouthstrokes]

If everyone took a drink everytime he says "regulator rectifier" we would be hammered by the end lol

[willow]

Wow, , you saved my day, Immensely glad I am, that I came across your video .. almost on the verge of abandoning riding my bike due to battery issues.... why didn't I find you earlier..

[macncheese]

This is very good info. Found out my voltage regulator was shorted to ground on 2 of 3 leads

[jeffwhite]

The best description and explanation of testing a reg I've seen yet.

[gregchan]

I'm from in the Philippines I am a motorbike mechanic good job sir

[kasunchamara]

you explained very simply and the diagram is very use full to understand about how to work regulator rectifier .thanks

[Barrys_Workshop]

The clearest and best explanation on YouTube thanks

[vvortex]

I have seen other do it yourself explain to do it both ways but you added the diagram which makes it all come together now.. thank you

[alexs-zqni]

Had lack of a harness and this will help get things plugged in

[timothymskerry]

Excellent video, and very helpful schematic animations. Easy to understand what the test is doing and now I know the problem isn’t my rectifier.

[StefanWerners]

Thank you for this video!! Misdiagnosed my stator as being bad before moving on to testing the regulator/rectifier on my 2016 KTM 500 EXC. Hadn't opened the case up yet and this set of tests confirmed my rectifier/regulator was still good even though I had a bad pin in the plug.

[shammon]

Great graphics, made it easy to follow

[ghulamfarooq]

Thanks, thanks a lot.. this much easier explanation.
I have no words to say.

[gregreid]

Nice work folks. While going through your steps to do a dynamic stator test my stator performed just as you explained for a three phase stator. AC voltages at example RPM's. The thing that left me stumped was my Shop Manual states that an AC voltage reading should be between 10 and 12 VAC. Not giving any engine speed. At idle it is producing 17 VAC. Increased engine speeds also increased VAC. Should I assume this as a typo and direct my attention towards the rectifier? This is on a 2005 Bombardier Outlander 330 HO 4x4.

[uniquecycles-westcoast]

really clear explained...the best thank you

[brothermikefrost]

Great simple explanation of how a rectifier works, i'm working on a honda pioneer 700 utv that is only charging 12.3 at idle and 13.3 at 5000 rpm. after watching this video and the one on stator i believe i have a bad rectifier but i'll know more after i perform these test. thank you Rocky Mountain atv.

[rdetmeever]

This was just what I needed and too the point with only the information I needed thank you for a great vidja.

[pgtips]

I want to know if the forward readings should be a similar value on both the positive & negative terminals as mine are double the value on the negative side ?

[gdog]

Thanks for your help, I’ve just correctly diagnosed a faulty regulator rectifier on my Polaris ranger 570.