Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

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

Ford 9N, 2N & 8N Discussion Forum
:

Got some questions.

Welcome Guest, Log in or Register
Author 
Pooh Bear

01-05-2006 04:09:38




Report to Moderator

Early 1949 8N converted to 12volt.

1. Is there any way to test the alternator with it on the tractor. I know I can take it off and have it tested for free. But I think it is ok, I just want to test it. Anyway to test it using a meter. The tractor has an idiot lite on it and the light goes out when the motor starts. But I"m having to put a charger on the battery and boost it everytime I start it. I"m sure the battery is good. I"m wondering if the problem is a weak alternator.

2. Anytime I hook up the finish mower, I have to use a big hammer and beat the yoke onto the PTO shaft. Then I have to beat it back off again. Is there anything I can do about this or do I need a new yoke. I"m afraid I"m gonna break something by beating on it. I recently put a new ORC on it and that made it even tighter.

3. Can I swap the steering box out for a later one that is rebuildable. Mine works ok except for the wheel wobble in 4th gear going down the road. I don"t do that very often so for now I just use my feet to stop the wobble. Be nice to fix it rite tho.

4. Does putting rear axle seals on it help any. I don"t want to put that kind of investment in it (money and labor) of they are gonna still leak anyway. Everything looks to be in good shape except one side leaks and the other mite a little.
Be nice to have steering brakes working for both sides.

I"ll probably think of other questions as well.

Thanks.

Pooh Bear

[Log in to Reply]   [No Email]
soundguy

01-05-2006 11:53:48




Report to Moderator
 Re: Got some questions. in reply to Pooh Bear, 01-05-2006 04:09:38  
Yes you can swap out your steering box.. but have you tried adjusting the sector plates?

Have you determined the play is not in tie rod ends or draglinks / spindle / hub bushings/bearings? Bulge in a tire? Got any toe in?

Do the voltage test on the battery.. static and running.. that will tel you if it is charging.. now.. it may be charging but there may be a short somewhere. After you determine if it is charging, get a low wattage lamp.. or a test lamp.. and pull a battery cable.. put the lamp inline with it.. if it glows.. you have current flowing whent he tractor is off.. and that is killing the battery. Start at the alternator and disconnect wires till you find the draw.

Outside possibility that it is bad battery.

Axle seals? Early ones only have one.. if the axle is grooved.. you may need to sleave it.. etc..

Soundguy

[Log in to Reply]  [No Email]
Pooh Bear

01-05-2006 20:06:00




Report to Moderator
 Re: Got some questions. in reply to soundguy, 01-05-2006 11:53:48  
No, actually I haven"t looked at any of the steering components
or adjusted anything for that. Just assumed it was the box.

Didn"t think about a short somewhere.
I"ll have to test that.

My brother knows how to use an o-scope.
He is an electronics technician.
I guess you adjust for the high frequency and look at the dc ripple.
Should be able to see the 3 phases that way.

I got one of those testers today for specific gravity in the battery.
Been a long time since I used one so I don"t know where my last one made off to.

Also gonna have to test for clean-bright-tight.
Although after charging the battery for a while it starts good.

Thanks for the suggestions.

Pooh Bear

[Log in to Reply]  [No Email]
roger '40 9n

01-05-2006 06:30:38




Report to Moderator
 Re: Got some questions. in reply to Pooh Bear, 01-05-2006 04:09:38  
Your alternator problem might be due to a loose belt. Retighten your fan belt and see iffn that helps.

Roger in Michigan



[Log in to Reply]  [No Email]
DavidO

01-05-2006 06:05:52




Report to Moderator
 Re: Got some questions. in reply to Pooh Bear, 01-05-2006 04:09:38  
The best "quick check" for the alternator is to read the battery voltage directly across the terminals with the engine running. It should read in the neighborhood of 14 VDC. Some internal regulators will read a little higher and some a little lower, but it should read within .5V of 14V. If it does, it is probably working. There can be other problems where is has the correct voltage but is not putting out full current, but they are fairly rare and are more difficult to test on the tractor unless you have and know how to use an oscilliscope.

[Log in to Reply]  [No Email]
Pooh Bear

01-05-2006 06:14:41




Report to Moderator
 Re: Got some questions. in reply to DavidO, 01-05-2006 06:05:52  
My brother has an o-scope.
But I never heard of testing an alternator with one.
I"d like to know how that is done.

I figured I could just start the engine and test the voltage across the battery. With the engine running I was thinking it should read about 15 volts (ok, 14)

The amp meter on the tractor doesn"t work and I don"t think it is even hooked up.

I could take a battery cable off while it is running but this only shows a dead alternator. A weak alternator will still run the engine.

I have heard of the screw driver trick on the back of alternators. I had forgotten about it.

I"m gonna have to get a hygrometer and test the battery.
I"m sure it is a good battery.
It is the trolling motor battery out of our boat.
It"s a deep cycle marine battery.
but it is too big for the tractor so I plan on getting a new battery soon as the grass starts growing again.

Thanks for the info.

Pooh Bear

[Log in to Reply]  [No Email]
DavidO

01-05-2006 10:14:02




Report to Moderator
 Re: Got some questions. in reply to Pooh Bear, 01-05-2006 06:14:41  
Well, I also said that you must know how to use the oscilliscope. I can teach you as I have taught hundreds of others, but that is a little beyond the scope of this forum. The alternator puts out a voltage that can be viewed with an oscilliscope and by doing so, one can tell if all of the electronics inside the alternator are functioning properly. This is better information than just reading the output voltage. If you do not have an oscilliscope, or you are not experienced in using one, it would be faster and easier to just take the alternator to one of the auto parts stores and have it tested on their machine. Be careful removing a battery cable while the engine is running. The sudden change in load on the alternator can cause the solid state electronics internal to the alternator to fail. Now your "was good" alternator may be "bad". Also bear in mind that a "weak" alternator is not that common. Most of the time, they either work or they don't. The amount of current that is going into the battery is only a good test if done by an experienced person as it is relative to a lot of conditions. The state of charge on the battery, the "size" of the battery, headlights on, etc. If your ammeter is hooked up and it shows 20-30 amps charge just after cranking the engine and then settles down to 2 or 3 amps (no headlights on), leave it alone. It is doing OK. By the way, your trolling motor battery is designed for the "deep discharge" cycle. That does not make it an ideal tractor battery because, depending on its ampacity, it probably cannot supply as much instantanous current as a standard type battery. It also re-charges at a different rate due to internal resistances so it will not charge the same as a "regular" battery. Sorta makes judging what the alternator is doing a little more complicated doesn't it. By the way, I am what our resident electrical engineer refers to as a "real electronics instructor".

[Log in to Reply]  [No Email]
Dave H (NY)

01-05-2006 04:52:21




Report to Moderator
 Re: Got some questions. in reply to Pooh Bear, 01-05-2006 04:09:38  
The answer on the alternator from Bill is a good way to test it so I will go onto your driveshaft, see if you can spray some gunk engine cleaner inside the yoke and then force a rag in and kind of scrub the insides clean. Also clean the PTO shaft if dirty you can use a wire wheel. If that does not help or if the yoke is actually damaged you'll have to change it. You can put a late model box on to replace your early one my 48 8N now has the late box as well. The axel seals do make the leaking stop so go ahead and bite the bullet.

[Log in to Reply]  [No Email]
Bill(NC)

01-05-2006 04:27:19




Report to Moderator
 Re: Got some questions. in reply to Pooh Bear, 01-05-2006 04:09:38  
One way to check the alternator is to measure the battery voltage before and after cranking the engine. The voltage should increase about a volt.

Another way is to crank the engine and remove the cable from the battery hot terminal. The engine should continue to run off of the alternator. Be careful when removing the cable.

Does your ammeter read charging?



[Log in to Reply]  [No Email]
Tim...Ok

01-05-2006 04:59:10




Report to Moderator
 Re: Got some questions. in reply to Bill(NC), 01-05-2006 04:27:19  
If it's a GM delco alternator,stick the tip of a screwdriver to the middle of the case on the back side,theres a plug there about an inch or so in diameter..If your alternator is charging,it will have a strong magnetic pull on your screwdriver blade.. it's quick and dirty,but it'll tell ya fast if your charging or not..

Tim



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


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