electrical trouble this time!

[temichels]

Hello, about 3 weeks ago, I posted a message about the center pivot joint in my yeoman. I would like to first thank everyone who advised me on how to take care Of that problem. WOW, what a job it was. Now, i have a different problem, the tractor has a dead battery, and the charging system seems to not be working. I have charged the battery up with a charger, but over time it just drains back out. So I decide to try an reconnect the wires from the stator plate back to the battery. There is a red and green wire coming out of the stator, (looking at the manuals for this tractor avalable here, i could not find a detailed diagram showing me how it was originally) so I recieved voltage from both, being advised by a friend from work, I attemped to hook up the green to the battery. When I did this there was continuity connected it to both poss and neg. it almost seemed as though the connection when left on drained the battery more, but when taking it off there was good strong voltage at the green wire. I know this probably sounds confusing, but I don't think I could describe the problem any better. Thanks in advance for any input Tim and Chris

[SmilinSam]

I'm no whiz at charging systems by any means , but generally when there are two wires coming from a Aluminum bore Briggs stator, one is a AC circuit to run lights and the other is a DC circuit to charge the battery. If so equipped, you do not want to hook the AC circuit up to the battery. My diagrams don't show wire colors, but as a educated Guess I'd think that the red is the battery charging wire and the green would be the AC lights circuit. Running juice from the battery to the wrong wires can fry a stator and other components. Sorry I can't be of more help, but I've not ever done the tests described in the BRiggs manuals to know how to tell whether a charging system has problems.

[D-17_Dave]

To help determin what to do tell us what you are working on. Model # of tractor, HP engine ans the like. There are so many cobinations it's hard to narrow it down. As Sam said some have a dc and ac circut. I think on yours it has 2 wires comeing out of the stator and both of these are ac. They go into the rectifier and it coverts it to dc. DON'T hook up any ac to the bat. Chances are the diode is blown and letting the bat drain.

[temichels]

Sorry about the lack of information. We have a yeoman 637, however, it has an 8 hp b&S engine from the same year broadmoor on it. It is model #190707 type 1710. After having looked in the "illustrated parts list" by briggs, they have 3 different stators for this model. One has a single wire discribes as an D.C. alternator, the other 2 are described as diode type alternators. Here is where it really gets tricky. I know I have a half moon style, and the manual shows the half moon style with only one lead wire coming out of it and ours have 2. I can only assume that somewhere in the past, someone installed a new stator, without it being original equipment. If I can figure it out, my family will be able to have another meal. Thanks again for your input Tim and Chris soon to be members