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Cub Cadet GT2521 not charging

A

a_lead

Member
I have a Cub Cadet, GT2521 with a Briggs motor that has stopped charging. I may have goofed it up when I hooked up the battery charger to it with out unhooking the battery cables.

Anyway it has an alternator behind the flywheel with an external regulator. The alternator has 2 wires going to the regulator, and one wire out of the regulator to the battery.

Any suggestions on how to test would be appreciated.

Thanks.

Edward
 
Ed, I had something like that happen to my cadet. The regulator is a rectifyer? (soild state) I had to replace that. If you go over to the garden tractor forum there was some good guy there that helped me out. Oldiron29
 
Far as I know (NOT real sharp on these) the 2 leads to the alternator should ohm out as a CONTINUOUS circuit, its simply a series circuit of all those individual windings around each of the poles, IF ITS AN OPEN CIRCUIT ITS BAD.

My best guess is if you put a voltmeter on those 2 alternator windings when shes running Id expect something like 20 to 30 VAC and if shes putting that out but NOT charging (NO DC output from the rectifier) Id expect the rectifier block (where the 2 alternator inputs are and the DC output) is bad.

My experience has shown its usually that rectifier thats the problem and if the alternator is pumping out 20 to 30 volts AC and is a good continuous (NOT open) loop but shes not charging its the rectifier block ifffffffffff all else is okay that is. That rectifier block should ohm out as the diodes they are, an open circuit in one directiion but a short in the other. I believe??? it needs a good case/frame ground as the DC output is with respect to case/frame ground but not sure

No warranty, just my best guess

John T
 
Here's a pic. Hal
PS: Use a volt meter set on AC volts. Should get around 30 volts. The outer terminals are AC
and the center terminal is DC and should show 14.5 volts. Run the engine at 1/2 throttle or better. Be careful when doing the checking.
5y9847s.jpg
 
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