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#11
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Update:
I verified the wires were good from front to back against the diagram in the book. Performed bench test of S/G with belt off, A and F wires unhooked, spun it up with a battery and jumper cables and it slowed down really fast with juice to the F terminal. Supposed to indicate it’s good as I understand it. S/G spins and starts the tractor very well. Could use some new brushes though. Removed the cover from the V/R and noticed the following: with engine running wide open bottom point is sparking and appears to be bouncing. Top point begins open but about the time the engine reaches max rpm it closes. If the F terminal is grounded bottom point opens and stops sparking, top doesn’t change. When the engine is shut off about the time it stops spinning the top point opens. Needless to say gauge doesn’t move, sits straight up and down. Someone asked what voltage reading was at BAT with engine running, appears to be 12.5. I had to hook my MM up then start engine to get this reading. If I try after engine is running I don’t get anything. Voltage at battery is still all over the place. I should point out that I am using the cheapest MM good ole Harbor Freight carries. I beginning to wonder if that’s my problem. After several starts battery is still showing 12.5 but it was fresh off the charger. If someone can tell me if that above mentioned point behavior is normal on the V/R I would appreciate it. I will probably replace the ammeter if nothing else. My main concern is that the new V/R and the S/G do not get damaged. I would think if they were it would have happened by now. |
#12
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Quote:
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Cooperino 100, 104,125, 126, 2x129's, 804, 1211, 1641 |
#13
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On the voltage regulator:
the terminals should be identified either stamped or printed. Batt. goes to battery, and sometimes passes through the ignition switch and/or the amp meter depending on your wiring diagram. "F" (field) goes to the small terminal marked "F" on the Starter/Gen Gen. goes to large terminal on the S/G. The Regulator needs a good ground or it will not function, most are rubber mounted so they usually have a braided ground strap that attaches to the reg body and the mounting bolt lug. Do not go by where the regulator terminals are located, go by what they are labeled as. Different manufactures put the terminals in various order. Not all are created the same. A good,fully charged battery will read 12.65 Volts. Does your amp gauge show discharge when the key or lights are on? it should. Is it even connected?? are there any fuses in the system? are they good & making good connection? if your multi meter on" DC" volts when checking? Those harbor fright meters although cheap, usually work ok but can go bad. Sometimes they give them away with a purchase. so you can't expect high quality. With the engine running at fast speed your meter @ the battery, should indicate somewhere in the vicinity of 14 volts and if the regulator is working to control the output, you will see a little fluctuation in the voltage. |
#14
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Quote:
Only fuse is inline for headlights. Amp gauge doesn’t move period. Yes it is connected per diagram. Only things your other comments bring to mind are that V/R is ground to the negative battery terminal, because that’s how it was when I got the tractor. And the Gen wite goes to the lug on the starter solenoid which in turn goes to the big or A terminal on S/G. Thanks for the input. |
#15
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Possibly the amp gauge is bad and open--no contact through it.
Have you checked the terminals on it for poor contact? If it is open (check it with your meter) then it is possible that is the problem. (Take the wires off to check it.) Is your battery charging, or does the battery have to be charged with a battery charger every so often? |
#16
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Quote:
I have cleaned the terminals already. I don’t remember putting a meter to it but I have stuck a test light on each side and it lit on both. Now that you mention it, is it odd that the amp gauge doesn’t show a discharge? Even while starting. I’m going to move the ground wire to the fender and check/bypass amp gauge and see where what happens. |
#17
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Does the v/r have a braided ground wire going to the mounting tab?
Sparks are good, means it is working, just remove and connect the two wires at the amp gauge together, then check the battery.
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Up to 530 and counting... I give up updating my profile! |
#18
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Quote:
Thank you for clarifying the sparks, wasn’t sure if that was good or bad. That’s exactly what I was planning on doing, from what I have read I was under the impression that the amp gauge could be bad but not interfere with anything else you just wouldn’t get a reading from it. |
#19
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Quote:
Yes i know about induction type meters where just a wire passes through a metal loop. You will find the problem, they ain't rocket science. when checking the amp meter for continuity, remove the wires from both terminals. you should see zero resistance on yer meter. |
#20
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Well. I still think I new a new MM.
Amp gauge doesn’t make my MM do anything. So just bypassed it and put all the wires on one post. Also I took the ground wire for the V/R off the battery and put it on the top bolt that holds the VR to the fender. Also tried an additional ground to the post as well as the body of the VR. If there was any change it was just that my meter didn’t fluctuate as bad. At one point it actually showed 14.5 at the battery but when I took the leads off the reading stayed and the meter acted like it was stuck. What could I do so that the top point of the VR moves? Like I said in earlier post it is open with everything off but once the engine is running it closes and stays that way until engine is off. If I ground the F terminal the bottom opens but nothing I have done gets any action from the top one. Only thing I forgot to try was if engine will stay running with positive lead unhooked. As of last night it wouldn’t. |
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