Posted by JohnDeereM50 on February 11, 2013 at 15:45:27 from (68.210.13.115):
Been messing with the generator on the M JD again. Had it rebuilt by a guy and he replaced everything, machine shows it is working. On the tractor it will not do anything. Checked with multimeter voltage never rises.
I rewired whole tractor last fall going by factory diagram used original colors and everything. Just for the heck of it I checked all wires this past weekend and cleaned all connections to bare shiny metal again.
I have tried two different solid state cutout relays with no change. Ran a jumper wire from field to ground with no change. Cleaned connections numerous times, checked belt to make sure it was tight. Checked that ammeter works correctly. Put on a brand new 6volt battery and had it tested to make sure it was good.
Went through everything on JohnT"s tips.
I made sure I polarized it correctly and still not charging at all. I tried the "motor" test on the bench with jumper cables with a 6v battery wouldnt do anything. Used a 12v battery and it spun. Wired it just like it would be on tractor. With a jumper to ground on field. Removed the jumper wire and it spun faster. But here is where I get confused. When I removed the jumper wire the generator stopped spining for a split second and started turning the opposite direction. Is it supposed to do that? This thing is causing me alot of grief. Any help is appreciated. Thanks.
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