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Second generator still no charge-HELP!

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Bob Quale

08-28-2003 14:29:35




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I got another new generator for my W-4. Still no charge? Regulator is new. What am I doing wrong? I polarize and get a spark, but no voltage accross the F and A terminal when running. Should there be a voltage there? If I cross the batt terminal and gen terminal as in the trouble shooting guide, I get a large discharge on the ameter. I don't have a flo conection to do the other test. Do I have to do something else to get it started the first time?

HELP!!

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Haas

08-29-2003 05:36:06




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 Re: Second generator still no charge-HELP! in reply to Bob Quale, 08-28-2003 14:29:35  
Do you have a new paint job on your tractor?? In order to work correctly, the mounting feet of the voltage regulator must have a good ground. New paint is enough to stop the system from charging. If you have mounted the regulator on new paint, try running a wire from the mounting foot of the regulator to the battery ground and see what happens.



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RAR/IA

08-28-2003 17:35:31




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 Re: Second generator still no charge-HELP! in reply to Bob Quale, 08-28-2003 14:29:35  
Had the same trouble on my WR9, but mine did not have a regulator but a cut-out. The F had to be grounded and the switch on the steering H and L provides two levels or resistance settings for ground. H is for high charge 4 or 5 amps and H is for about 9 or 10. The control on the steering column has to be attached and grounding to the column. Hope this helps
Roger



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Bob Quale

08-28-2003 16:37:57




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 Re: Second generator still no charge-HELP! in reply to Bob Quale, 08-28-2003 14:29:35  
I did the trouble shooting guide but I don't have the FLO connection on my regulator, making that test impossible to do. If I ground the field, still nothing. I feel like I need to do something to get the generator started since they both are new and doing nothing? The generator just has no output? Doesn't there have to be a voltage accross the F and A?

BOB



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Bigdog

08-28-2003 16:06:46




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 Re: Second generator still no charge-HELP! in reply to Bob Quale, 08-28-2003 14:29:35  
Ground the field terminal. If it charges, your problem is in the regulator or connections. Bob Melville has a troubleshooting chart which should help you. Check the link



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Bob

08-28-2003 15:29:14




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 Re: Second generator still no charge-HELP! in reply to Bob Quale, 08-28-2003 14:29:35  
bob when you installed new voltage reg.did you polarize it per the instructions that usually come in the box with new reg?if not try that ,but check to make sure all wires are in their correct location,don't want to fry new parts



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Bob Quale

08-28-2003 16:31:39




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 Re: Re: Second generator still no charge-HELP! in reply to Bob , 08-28-2003 15:29:14  
The regulator is new but on the tractor, no instructions. But shouldn't the generator have a voltage at the F and A terminals? It seems that it has no output. That makes me think I did something wrong? There are no diodes to burn out? I'm thinking it didn't polarize correctly? Maybe I'll try a new regulator. I'm out of ideas?

BOB



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Bob M

08-29-2003 06:54:13




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 Re: Re: Re: Second generator still no charge-HELP! in reply to Bob Quale, 08-28-2003 16:31:39  
Bob - That troubleshooting guide is for a regulator-equipped system. If your "regulator" has no FLD terminal, it's actually a cutout. Troubleshooting a cutout is a bit different... here's what I'd suggest:

With the motor stopped, connect a jumper wire from the generator F terminal to a GOOD ground - the grounded battery post is best. Now run the motor at ½ throttle or faster, and with an assistant watching the ammeter connect another jumper between the BAT and GEN terminals at the cutout. If the generator is good, the ammeter will show a decent level of charge (+10 amps or so). It also means the cutout is either bad or is not properly grounded as Haas suggests. However if you get nothing or a discharge indication when you make the connection, the generator is bad.

If the generator tests OK, then the problem has gotta be in the charging system F circuit. If you have an ohmmeter you can test it like this: Remove the wire from the generator F terminal. Connect one ohmmeter lead to the disconnected F wire and the other to a GOOD ground. With the headlight switch in the L (low charge) position, the ohmmeter should read around 2 or 3 ohms . In the other three positions (H, D and B) the meter should read close to 0 ohms. If the readings are higher (or infinity) either the switch is bad or the switch is not grounded, again as Hass suggests.

If it turns out the problem is the light switch and you don't want to mess with it, you can simply permanently ground the generator F terminal. This set the generator to "high" charge full time. Unless you the tractor for hours on end, it will work fine this way. Just check the battery water level occasionally and refill if it gets low.

Hope this helps!

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Dakota Jim

08-29-2003 05:41:06




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 Re: Re: Re: Second generator still no charge-HELP! in reply to Bob Quale, 08-28-2003 16:31:39  
That's the third time you've asked whether there should be a charge accross the F and A terminals. Are you putting one of your leads on the F and the other on the A at the same time and then reading your meter? Or are you placing one lead on either the A or the F and the other lead to ground?



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Bob Quale

08-29-2003 09:28:29




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 Re: Re: Re: Re: Second generator still no charge-H in reply to Dakota Jim, 08-29-2003 05:41:06  
OK I got it to work but i'm not sure why. I put my voltmeter from A to ground. I then repolarized the generator and watched the VOM. Each time I touched the terminal for polarization, the VOM raised about .5 volts. I did it untill I got max voltage, about 10 times?. Then I ran a wire from the F to ground and the ameter shows it is charging, with out this wire it will not charge so I will get another regulator and see how I make out.

Thanks for all the help!

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Bob M

08-29-2003 10:18:01




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 Re: Re: Re: Re: Re: Second generator still no char in reply to Bob Quale, 08-29-2003 09:28:29  
Bob - Do you have a regulator (4 terminals) or a cutout (2 terminals)? If a cutout, replacing it with a new one will not solve the problem. Rather you need to find/correct a break in the field (F) circuit wiring somewhere between the generator, light switch and ammeter box ground.

However if you DO have a regulator, replacing it should do the trick...



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Bob Quale

09-01-2003 06:43:30




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 Re: Re: Re: Re: Re: Re: Second generator still no in reply to Bob M, 08-29-2003 10:18:01  
I thank all of you for your help! I cleaned all the grounds, but the problem seemed to be in polarizing. The ameter sais it is charging around half throttle and above. Does this sound right? It would be nice if it would charge at lower RPM. Also it has a regulator with four connections, not a cut out.



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Jacques

09-01-2003 17:40:59




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 Re: Re: Re: Re: Re: Re: Re: Second generator still in reply to Bob Quale, 09-01-2003 06:43:30  
Bob, someone may have mentioned this already, but here goes. Make sure the wires to/from the gen/regulator, etc., are not splice with crimp-on splices. These are ok for a while if done properly, but the best connections/splices are soldered! If you've got a few old crimp-on splices in your generating or ignition wiring, replace them. Also make sure you've got the right size wire for the job. Just one or two old, corroded or improperly done splices will be enough to drop voltage, overheat and maybe even cause a fire. After you fix the generating problem, recheck the wiring and replace any wire that's seems questionable. Good luck.

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