TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Tractor Talk Discussion Forum

Repolarize a generator

Welcome Guest, Log in or Register

Author

Jeff Rice

05-31-2004 14:40:10

Report to Moderator

I'd like to have someone simplify the directions my original IH book gives?My Cub's generator went bad so I replaced it with a rebuilt unit. The '62 manual states to "momentarily connect a jumper lead between the BAT and the GEN terminals." If the + ground system's battery has 2 posts & the generator has 2 posts, how do I know which is + & - on the generator? Also, what is the " F " terminals? & what's the differance between a generator & a regulator?

[Log in to Reply] [No Email]

Ron

05-31-2004 14:50:44

Report to Moderator

Re: Repolarize a generator in reply to Jeff Rice, 05-31-2004 14:40:10

It doesn't matter. There should be three terminals on the regulator. Very briefly jumper the two that are not the "F" (field) terminal. They will be the "B" and "G" terminals.

[Log in to Reply] [No Email]

Jeff

05-31-2004 15:14:09

Report to Moderator

Re: Re: Repolarize a generator in reply to Ron, 05-31-2004 14:50:44

The generator only has 2 wires to connect to and 2 posts to connect on?

[Log in to Reply] [No Email]

Ron

05-31-2004 16:13:47

Report to Moderator

Re: Re: Re: Repolarize a generator in reply to Jeff, 05-31-2004 15:14:09

When you polarize the generator you do so AT THE REGULATOR. It has three terminals, "B", "G", and "F". You short the "B" and "G" very briefly.

[Log in to Reply] [No Email]

RAB

05-31-2004 23:52:57

Report to Moderator

Re: Re: Re: Re: Repolarize a generator in reply to Ron, 05-31-2004 16:13:47

It will make no difference if you flash a connection from the battery live to the field terminal on the generator - all the wires should be connected to all the other posts anyway. The only thing this procedure does is polarise the field coil magnets.
Regards, RAB

[Log in to Reply] [No Email]

Ron

06-01-2004 03:37:29

Report to Moderator

Re: Re: Re: Re: Re: Repolarize a generator in reply to RAB, 05-31-2004 23:52:57

Hogwash.

Read this: Link

[Log in to Reply] [No Email]

RAB

06-01-2004 05:29:19

Report to Moderator

Re: Re: Re: Re: Re: Re: Repolarize a generator in reply to Ron, 06-01-2004 03:37:29

Hogwash to you too - in the nicest possible way of course. Maybe you should read the pictures on your link - you will note, I hope, that the battery live is connected to the same terminal as you are using and the other end of the other terminal you are using is connected to the field windings. As the resistance and therefore the voltage and therefore the current will be the same and in the same direction, there will not be the slightest difference. QED.

[Log in to Reply] [No Email]

Jeff

06-01-2004 08:40:30

Report to Moderator

Re: Re: Re: Re: Re: Re: Re: Repolarize a generator in reply to RAB, 06-01-2004 05:29:19

I appreciate both your inputs, my dilemma is I'm not a mechanic? I've figured out what I believe is the regulater and the problem is it has 4 posts? The 3 on the side, left lead goes to top post of the generator, middle & right leads go into the wiring harness back to dash.The 4 th lead goes from the other post on the gen. to a connect underneath the reg.Therefore I 'm still not sure which is B, F or G?

[Log in to Reply] [No Email]

Jon H

06-01-2004 16:13:28

Report to Moderator

Re: Re: Re: Re: Re: Re: Re: Re: Repolarize a gener in reply to Jeff, 06-01-2004 08:40:30

If you remove the screw/washer/wire from a regulator terminal post,you should find the identifying letter stamped into the terminal post. On some units the identifying letter is painted/stamped on the regulator cover near the terminal post.

[Log in to Reply] [No Email]

Greengo

06-01-2004 23:08:08

Report to Moderator

Re: Re: Re: Re: Re: Re: Re: Re: Re: Repolarize a g in reply to Jon H, 06-01-2004 16:13:28

To polarize the generator, simply make a short jumper wire to short between the battery (b or bat) and generator (g or gen) lugs on the cutout relay or voltage regulator. Only a split-second or a spark is required, so simply tap your jumper wire onto the lugs and pull them right back off.

This can be done at the generator also. Sometimes it is hard to access the regulator on some older tractors as they are under the hood.

[Log in to Reply] [No Email]

Jeff

06-02-2004 09:04:46

Report to Moderator

Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Repolarize in reply to Greengo, 06-01-2004 23:08:08

I've taken the cover , screws & clips off. The first connect is labeled " F ", second " Bat " , the third on the side of the regulater " L "? The forth underneath is not labeled? This one leads back to the generator, would this be the " G "? If that's correct, then I hook everything back up including the re-charged battery and jump a lead between " bat " & "G"?

[Log in to Reply] [No Email]

Jon H

06-02-2004 20:22:14

Report to Moderator

Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Repola in reply to Jeff, 06-02-2004 09:04:46

Sounds right,Jeff."The forth underneath is not labeled? This one leads back to the generator, would this be the " G ". I would say yes if the underneath terminal goes to the generator post with the letter A (armature)stamped into the case beside it. The other generator post should have the letter F (field)stamped into the case.

"If that's correct, then I hook everything back up including the re-charged battery and jump a lead between " bat " & "G"? . Yes,make sure the battery is connected with the proper post connected to ground,and polerize the generator before you start the tractor.

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home | Forums

Copyright © 1997-2023 Yesterday's Tractor Co.
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy