Ok, Folks. Here is the detail of what I knew Wednesday through Friday:
Stator Gone Bad - Page 2 - Harley Davidson Community
On Friday, I started really problem solving on the bike. As indicated in the link, I had opened up the Primary chain inspection plate and it definitely smelled burnt. So I checked the Vac of the stator. Very low. Running about 10 Vac/1000 rpm. But I did not get any ground indiction on either pole of the stator plug or across the poles.
I tried to check the VR with the procedure indicated here:
Harley Davidson Community
But I could not get the procedure and results indicated in the procedure.
Anyway, I tore the Primary apart, and sure enough I had one burnt coil or more (see the pix in the link below). But the killer here was what I think caused the failure. I have the Hayden M6 primary chain tensioner on this bike. The system uses two springs - one inside the other. These had broken with the larger one going to pieces and scattering inside the Primary. Bits had gotten into the rotor and probably shorted the coil(s).
The bits had also chewed up the magnets in the rotor. So not only were bits of the springs running around inside the Primary, so were the bits of the magnets!
So I have replaced the stator and rotor and then put everything back together. Tested the Vac from the alternator after reassembly, and it was putting between 35-40 Vac at idle! So I hooked up the VR, and ureka! Working again.
Costs were:
29987-02A Stator Assy, 45 Amp Single $ 142.95
29999-97B Alternator Upgrade Kit 264.95
34906-85D Gasket, Inspection Cover 30.95
2918 Screw, Cap torx (4) 11.80
Sub-Total 450.65
Tax 37.18
Total $ 487.83
Just parts!!
UC Coil Failure
TQ
Stator Gone Bad - Page 2 - Harley Davidson Community
On Friday, I started really problem solving on the bike. As indicated in the link, I had opened up the Primary chain inspection plate and it definitely smelled burnt. So I checked the Vac of the stator. Very low. Running about 10 Vac/1000 rpm. But I did not get any ground indiction on either pole of the stator plug or across the poles.
I tried to check the VR with the procedure indicated here:
Harley Davidson Community
But I could not get the procedure and results indicated in the procedure.
Anyway, I tore the Primary apart, and sure enough I had one burnt coil or more (see the pix in the link below). But the killer here was what I think caused the failure. I have the Hayden M6 primary chain tensioner on this bike. The system uses two springs - one inside the other. These had broken with the larger one going to pieces and scattering inside the Primary. Bits had gotten into the rotor and probably shorted the coil(s).
The bits had also chewed up the magnets in the rotor. So not only were bits of the springs running around inside the Primary, so were the bits of the magnets!
So I have replaced the stator and rotor and then put everything back together. Tested the Vac from the alternator after reassembly, and it was putting between 35-40 Vac at idle! So I hooked up the VR, and ureka! Working again.
Costs were:
29987-02A Stator Assy, 45 Amp Single $ 142.95
29999-97B Alternator Upgrade Kit 264.95
34906-85D Gasket, Inspection Cover 30.95
2918 Screw, Cap torx (4) 11.80
Sub-Total 450.65
Tax 37.18
Total $ 487.83
Just parts!!
UC Coil Failure
TQ
Last edited: