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Suzuki 1400 Cavalcade charging issue (Read 207 times)

Hash Cash

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Suzuki 1400 Cavalcade charging issue
Jun 7^th, 2016 at 6:09pm

Hi folks, I've been a member for a while, but never posted a question, so I apologize in advance if I'm doing this wrong. I am an auto mechanic, so I don't mess around with bikes much. I have a customer's Suzuki that does not charge and I believe it must be the stator, because the three traces from the stator show 3 completely different voltage levels. Anybody have a known good waveform or any ideas before I throw a stator at it?

SuzukiCavalcade_1986_20160607-0002.psdata (1330 KB | )

Suzuki_Cavalcade_1986_20160607-0003.jpg (93 KB | )

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StitchB

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Re: Suzuki 1400 Cavalcade charging issue
Reply #1 - Jun 24^th, 2016 at 12:03pm

Hash Cash, interesting as with out a diode you would have AC, but I am not familiar with this but wonder why we have 3 signals anyway.

Would be interested to see what you have with the rectifier hooked up. Asume there is nothing as you said it does not charge, but would like to see it.

Would be nice if somebody else would chim in here, I only run smaller bikes KLR 650 which only have one signal coming out for charging DC, and interesting enough the signal for coil is not rectified and is 120 volt AC, (not a misprint).

Possible the 3 signals perform different functions such as 5 volt Ref ect, (just talking here) and might not be bad as they are clean.

I would be inclined to call a Suzuki shop and get a view on this before pulling the trigger on stator unless they are cheap.

StitchB

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Wookie Freshman Member Picogroup Offline I'm an Autonerd Posts: 44 DFW Texas USA	Re: Suzuki 1400 Cavalcade charging issue Reply #2 - Jun 24^th, 2016 at 8:23pm Some motorcycles do indeed have a single phase stators. In this case its a three phase. All three phases should look identical to channel A. Looks like the other two phases have their windings shorted. Typical 3 phase winding
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Hash Cash

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Re: Suzuki 1400 Cavalcade charging issue
Reply #3 - Jun 25^th, 2016 at 5:20am

Wookie, thanks for your reply. It was very helpful. Another reason I thought the three traces should be the same is that all three wires going to the rectifier are identical. Three wires that they connect to on the rectifier are also identical. So that makes 6 different ways it could be hooked up. I would think if they were supposed to be hooked up a certain way, they would have color coded the wires differently.
Hash Cash

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Spence LSD Guide Picogroup Offline Posts: 8,025 Jeffersonville Pennsylvania USA Gender:	Re: Suzuki 1400 Cavalcade charging issue Reply #4 - Jun 25^th, 2016 at 8:06am Hash Cash I took a quick look and one seems out of phase two seem low. I'll see if I can look into gettin a capture to help. No promises though. Have a good day! Spence
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StitchB

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Re: Suzuki 1400 Cavalcade charging issue
Reply #5 - Jun 27^th, 2016 at 3:52am

Spence wrote on Jun 25^th, 2016 at 8:06am:

Hash Cash I took a quick look and one seems out of phase two seem low. I'll see if I can look into gettin a capture to help. No promises though.

Have a good day!

Spence, thanks for the input and did not see the sync thing, ( Angry

hate it when that happens) but I can deal with it.

Just came off of a 1,000 mile ride, 50% in the dirt, nothing broke including bodies, does not get any better, chow.

Larry

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StitchB

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Re: Suzuki 1400 Cavalcade charging issue
Reply #6 - Jun 27^th, 2016 at 3:56am

Spence wrote on Jun 25^th, 2016 at 8:06am:

Hash Cash I took a quick look and one seems out of phase two seem low. I'll see if I can look into gettin a capture to help. No promises though.

Have a good day!

Spence, thanks for the input and did not see the sync thing, ( Angry

hate it when that happens) but I can deal with it.

Just came off of a 1,000 mile ride, 50% in the dirt, nothing broke including bodies, does not get any better, chow.

Larry[quote author=6F445be so but in 3 phase power we also have a wild leg (in comercial bldg) , not being an electrician this is obviously not building power, but again would like to know the strategy as would assume could have different output depending on the wingdings, and what was their intent in the end, always trying to learn here.

Stitch

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RedlinePowersports

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Re: Suzuki 1400 Cavalcade charging issue
Reply #7 - Feb 14^th, 2017 at 9:15pm

Wookie is right here. It would seem that 2 of the phases or windings are shorted.

Another way to test/confirm this would be to just use a meter and put it on the ohms setting and test each leg of the stator to ground. In other words, put one lead on one wire of the stator (with it mounted in the bike for chassis ground) and the other lead of the meter to chassis ground...if you show 0-2 ohms, you know you have a bad stator. None of the stator legs should be grounded otherwise any power generated would go right to ground instead of to the regulator.

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