Stator/Rotor ???
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Grand HDF Member
Joined: Apr 2014
Posts: 3,790
Likes: 3,770
From: Monticello, Florida
Stator/Rotor ???
I suddenly have no charging on my 04 Ultra. Checked voltage at the battery, only had battery voltage, no increase when running up to 2,500 rpm. Check the stator, had 17 volts at idle. Replaced the regulator and no change. Opened up the primary "assuming" it must be the stator. When I pulled the rotor off, most of the magnets are loose and will slid around inside the rotor. They were also stacked side by side, no space between most of them. Could the problem be the rotor and not the stator? Is there a way to test the stator off the bike? Any suggestions appreciated.
Outstanding HDF Member
Joined: May 2015
Posts: 2,172
Likes: 377
From: Georgia
If you have the FSM I believe it has a troubleshooting section on the stator where you can check each winding for continuity, resistance and shorts. Sorry, can't be more help than that.
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Grand HDF Member
Joined: Apr 2014
Posts: 3,790
Likes: 3,770
From: Monticello, Florida
Yea, I figured the rotor is shot. Just wondering about the stator. I checked what I knew to do with limited knowledge. I have continuity between the two wires but, there is no resistance. I used the ohm meter and it comes up 0. Is there not supposed to be resistance?
CORRECTION: I do have .1ohms resistance between the two wires.
CORRECTION: I do have .1ohms resistance between the two wires.
Last edited by Pothole914; Mar 1, 2017 at 10:14 PM.
Extreme HDF Member
Joined: Sep 2010
Posts: 14,744
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From: Phoenix '53, '88, '09 Big Twins
when the magnets come off they hit the stator.
the magnets are glued to the rotor.
using an air impact tool on the comp is the fastest way to knock them off
when you get your new rotor you will see the marking warning against sharp blows/impacts.
that is why
Mike
the magnets are glued to the rotor.
using an air impact tool on the comp is the fastest way to knock them off
when you get your new rotor you will see the marking warning against sharp blows/impacts.
that is why
Mike
Tourer
Joined: Jun 2011
Posts: 283
Likes: 44
From: WV
If you do any trips and are in that deep there is no way I don't replace the stator unless it is fairly new. Cost me $500.00 to have HD Dealer replace mine in Salt Lake City last year. Especialy sucked because I had planed to replace it this winter while doing a swingarm upgrade.
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Tourer
Joined: Oct 2007
Posts: 394
Likes: 29
From: Georgia
Possible simple solution: Check the fuse between the charging system and the battery. It blows on our older police bikes and gets replaced often. Guess I was wrong about the voltage output.
Ben
Ben
Last edited by RoadKingCop; Mar 2, 2017 at 08:20 AM.
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Club Member
Joined: Apr 2013
Posts: 7,681
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From: Utah
The Electrical Diagnostic manual states "Resistance should be less then 0.5 ohm and stator output should be 16-20 VAC per 1000 rpm."
Check both stator wires to one of the mounting bolt holes on the stator to make sure it's not shorted, should show open circuit. If the primary smells like a burnt circuit board the stator will need to be replaced.
https://serviceinfo.harley-davidson....t/view?id=8264
Give Cycle Electric a call they make good aftermarket parts:
http://cycleelectricinc.com/
Check both stator wires to one of the mounting bolt holes on the stator to make sure it's not shorted, should show open circuit. If the primary smells like a burnt circuit board the stator will need to be replaced.
https://serviceinfo.harley-davidson....t/view?id=8264
Give Cycle Electric a call they make good aftermarket parts:
http://cycleelectricinc.com/
Outstanding HDF Member
Joined: Dec 2008
Posts: 2,007
Likes: 353
From: Ohio
Sharp blows/impacts can demagnetize the rotor making it useless. Same goes for dropping it or allowing it to slam into the casing.