9540 Overcharging

[asar2525]

Hello all,

I have another issue with my 9540. It is overcharging the battery to over 20V. I noticed that it had blown the caps off the cells of the battery and checked the voltage. I replaced the voltage regulator earlier this year and thought that had fixed it but I seem to have been wrong about that. I'm beginning to think that the alternator is just putting out full amperage. Does anyone have a wiring diagram for the alternator/regulator for this series tractor? I have the parts and operator manuals and neither is very helpful in this regard.

Thank you all in advance,
Asa

 

[hala]

did you check that you had the correct voltage approx. 14.5 V after changing the regulator. Check the diodes in the generator that regulate the magnetization winding.
Hazze