Question about 1996 kawasaki VN 1500 Vulcan Classic
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Posted on Jan 02, 2017
SOURCE: stator wiring overhaeting
My 96 GSXR was doing this too. I found I had oil leaking into the stator case. This had "washed" the insulation off the windings (I think) causing it to short out. It shorts worst when it is hot. Now when I disconnect the generator while running it runs great. Reconnect, and a huge blue spark arcs across the plug. This causes a huge current flow at this plug (back and forth). I haven't gotten all my parts yet to try out my diag. Check under your stator cover, or just continuity test it in the bike (OHMs meter).
Posted on Jun 04, 2009
(I am the author of the reference thread on TriumphRat that wasposted by another respondent)
Not personally intimate with the Vulcan, but this is a 'conventional' motorcycle 3 phase stator energized by a crank driven magnetic rotor.
The stator is connected in delta to the R/R. There should be NO measurable resistance from any of the three stator output terminals to engine ground - it should be completely isolated. If you can measure a low resistance (not clear if your 0.2 ohms is from terminal to terminal or terminal to engine ground) then your stator is fried.
Regarding the R/R connections - the third wire on the output is one of two functions (unfortunately without benefit of a schematic I cannot definitively conclude for you): either a 'voltage sense' wire, or in some Kawasakis they feed one phase of the stator output back out again for use in the starter cut/latch circuit. It should be reasonably easy to differentiate which it is.
Posted on Aug 13, 2009
A bridge rectifier is in your circuit to make "rectified DC" from the "AC" your alternator produces. Of course you need DC to charge the battery.
Simple method - no ohm meter required.
Get a flashlight battery, a flash light light and two paper clips. Fasten one around the light and tape it to the + end of the battery with the tip of the light on the tip of the battery. You will have to manipulate #2 paper clip onto the bottom of the battery as you insert it here and there. Hold the thought.
A bridge rectifier is composed of two or four or maybe more diodes. A Diode allows power to travel in one direction but not the other. When this happens, the "top" part of the AC cycle passes through the diode but the "bottom" part does not. (remember what AC looks like on an oscelescope? - I cant remember how to spell it)
What does that mean to you? ... with the battery out of the circuit and the rectifier unplugged, start sticking the paper clip into first one then another slot. If you get light at all terminals, (or any pair) your diodes are shorted. Same story if you get NO light at all terminals (or any pair).
If your rectifier is good ... you should get light in one direction (some terminals) then turn the polarity around on the same terminals and you chould get no light.
If you have a ohm meter, you should read open in one direction and short in the other direction.
If this is getting too deep for you ... let me know I will try again.
If your rectifier is bad, remove it and take it with you to the Honda Shop parts place to make sure you get a exact replacement ... while there, ask the counterman if he or she can check it for you.
I hope this helps you out.
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Posted on Oct 14, 2009
Testimonial: "Thanks for the tip, My stator is toast, I found a place in S.Cal that will rebuild my or I can find one on e-bay, again Thanks for the great tip!"
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