Stator bad?


Information and questions on GL1200 Goldwings (1984-1987)
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Chriszx2
Posts: 3
Joined: Sat Oct 08, 2016 11:28 pm
Location: Natchitoches LA, USA
Motorcycle: 1986 GL1200 interstate

Stator bad?

Postby Chriszx2 » Sat Oct 08, 2016 11:35 pm



I bought a '86 GL1200 for cheap, but now I'm paying for it. The wiring is a rats nest. I got it firing, but it drained the new battery. Testing shows 11.1 volts at 2500 rpm, and ZERO volts on all three of the yellow stator wires at same rpm. My mechanic friend says its a bad stator. But shouldn't even a bad one have at least SOME volts on the yellow wires?



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Asp
Posts: 43
Joined: Wed Mar 02, 2016 3:13 am
Location: Shrewsbury UK
Motorcycle: 1987 GL1200AH Aspencade

Re: Stator bad?

Postby Asp » Sun Oct 09, 2016 3:39 am

Have you got your meter set to AC volts whilst checking the yellow wires? It won't read if set to DC, like you would check the battery voltage with.

CrystalPistol
Posts: 265
Joined: Wed Mar 10, 2010 9:07 pm
Location: Shenandoah Valley of Virginia
Motorcycle: 1985 GL1200A
1997 GL1500SE Lehman Trike

Re: Stator bad?

Postby CrystalPistol » Sun Oct 09, 2016 10:24 am

Asp wrote:Have you got your meter set to AC volts whilst checking the yellow wires? It won't read if set to DC, like you would check the battery voltage with.

YEP, pure AC voltage at the three yellow wires from stator ..... have to check like said.
Image

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SilverDave
Posts: 367
Joined: Sun Aug 09, 2009 9:39 am
Location: Langley, BC
Motorcycle: 1985 GL1200 GoldWing Aspy

Re: Stator bad?

Postby SilverDave » Mon Oct 10, 2016 10:46 am

Cut the three yellow wires , have stator free of the bikes electric system ....

and do the complete, three part stator test , before you start tearing things apart :

http://iwing.org/Tech%20info/testingstator.htm

and check your manual for the 2 part Reg/rect test ..

Often , the corroded connections at the reg/rect and at the stator plug will cause these fluctuations .

LOL
Of course a dead stator will also cause this ......

SilverDave

Chriszx2
Posts: 3
Joined: Sat Oct 08, 2016 11:28 pm
Location: Natchitoches LA, USA
Motorcycle: 1986 GL1200 interstate

Re: Stator bad?

Postby Chriszx2 » Mon Oct 10, 2016 6:51 pm

Ahhh. Ok , I tested in AC, I don't have a tach but revved until it sounded about 3000rpms. Readings were 46, 48, and 47.... Not looking good.

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SilverDave
Posts: 367
Joined: Sun Aug 09, 2009 9:39 am
Location: Langley, BC
Motorcycle: 1985 GL1200 GoldWing Aspy

Re: Stator bad?

Postby SilverDave » Mon Oct 10, 2016 10:04 pm

.... and what were the 3 continuity resistance checks , and the three resistances to ground ?


Your three voltages are about 50 VAC , very consistent , and depending on the rpm , ... " Close enough" ... I doubt thats your problem

Your battery may have a single bad cell ( Get it load tested by a pro battery shop )
or...
your Reg/rect may have an issue .... ( Test it as best you can ... borrow a diode tester , Multimeter )

but most likely ... a few bad connections, somewhere ...
Hard solder/ shrink wrap all connections at stator, and at Rect/reg.

God Luck


SilverDave

Chriszx2
Posts: 3
Joined: Sat Oct 08, 2016 11:28 pm
Location: Natchitoches LA, USA
Motorcycle: 1986 GL1200 interstate

Re: Stator bad?

Postby Chriszx2 » Mon Oct 10, 2016 10:12 pm

The continuity and resistance checks came out good. The battery is currently dead was jumping from car, but should the stator give enough juice for it to run with a dead batt once jumpers come off? Because mine won't. I'll test the rectorfier next. Thanks for helping! Ive built a few car engines but have no clue when it comes to electrical lol

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wilmo
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Location: Ogden, Utah
Motorcycle: 1994 Goldwing SE Blue-the fastest color
2005 Yamaha Majesty 400

Re: Stator bad?

Postby wilmo » Tue Oct 11, 2016 11:08 am

Ideally, you run this test with a fully charged good battery. If jumping from a car do not remove the cables, bike won't run especially when the stator is removed from the circuit. then measure across all 3 leg pairs AC voltage at 3k steady rpm. Mine measures 70VAC, the minimum should be 50VAC. As long as all 3 measure consistently, whether it be 70 or 50, the stator is good. If one is considerably lower than the rest, it's toast.

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SilverDave
Posts: 367
Joined: Sun Aug 09, 2009 9:39 am
Location: Langley, BC
Motorcycle: 1985 GL1200 GoldWing Aspy

Re: Stator bad?

Postby SilverDave » Tue Oct 11, 2016 4:46 pm

I think you " dodged a bullet " with your stator ( it passed the 3 part test ... )
But ...
Remember its a Stator / rectifier / regulator / battery system ,

and a fault in any one can bring the other down ...

That is, a bad battery can destroy a stator ... and that will really cost you in time or $$$ to get fixed .

so
IMHO .. I'd get a new , charged battery , and possibly a brand new Electrix Reg/rect

Find all the connections at the reg/rect ( 6 ? ) , and at the stator end (3)
and Western union splice / hard solder , triple shrink wrap all of them .
Every one !!!

Thats several long hours work, but much less than pulling the engine.

Maybe buy a
Electrical connections GL1200 harness a s well:

https://electricalconnection.com/index. ... the-story/

Good luck !!

SilverDave




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