Quote: docmirror (quoted from post at 19:56:37 05/06/23) [quote="JMOR"](quoted from post at 05:32:20 05/06/23) [quote="docmirror"](quoted from post at 22:32:30 05/05/23) I sent my Ford 961 to a shop to paint. They did a crappy job, but that's not the problem.
I have the red light on the panel that came on when the key was on, and went out when the tractor was running. I don't have the wiring diagram, but I know that many old charging systems required the filament resistance for the voltage regulator to operate right.
I know this was true on some old Ford cars from the 60s, and also on my old Fiat.
My red incandescent light has stopped working, and also the charging system no longer charges my batt. I'm wondering, for these 6V Pos ground systems, do I need the red light filament connection to get the charging system to work right?
It seems like a remarkable coincidence that the light and charging fail at the same time.
Bulb isn't necessary for it to function. In the end, the bulb is simply across the BATT to ARM terminals on the cut out, so cut out open bulb sees voltage, cut out closed, bulb is shorted out by cut out contacts.
[/quote]
Excellent, that's what I need, and thanks also for the wiring diagram. I have the hood and tank off, I'm going to order a wiring harness and do it over. Plenty of splices in stuff. Not that I think the re-wire will solve my no charge, but the current harness is pretty wrecked.
Once I have the new wires in, I'll check the brushes for contact with armature. I recall checking voltage at the reg, and I had 6.67 on the batt term and only 6.34 on the armature. There used to be such a thing as 'flash the field', I might give that a quick try too. It's been sitting more than 2 months.
[/quote]If you flash field , be sure to disconnect wire from field terminal of gen before applying battery voltage to gen field terminal.
This post was edited by JMOR on 05/07/2023 at 01:19 pm.
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Today's Featured Article - Timing Your Magneto Ignition Tractor - by Chris Pratt. If you have done major engine work or restored your tractor, chances are you removed the magneto and spark plug wires and eventually reached the point where you had to put it all back together and make it run. On our first cosmetic restoration, not having a manual, we carefully marked the wires, taped the magneto in the position it came off, and were careful not to turn the engine over while we had these components off. We thought we could get by with this since the engine ran perfectly and would not need any internal work. After the cleanup and painting was done, we began reassembly and finally came to t
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