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Front Shaft Bearing in the tranny??? TRACTOR SPLIT TRICKS/INFO?

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Andy - Hammond,

02-14-2002 05:52:08




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Fellas, seems like it might be time to split ole' 8N apart and locate the source of that loud whining noise. When the clutch is pressed the noise disappears until the clutch is released and then the hideous noise returns. Very loud WHHHHIIIINNNNN NNNEEEEE EE --- metallic whine.
the clutch engages fine - no loss of speed, power or response. No play or stickyness in clutch assembly. Even WHINES in idle but goes right away if clutch is depressed.

I am thinking either the throw out bearing in the clutch or the front bearing the tranny. If I do split the ole' tractor - Any recommendations and/or tricks? Plus what else should I inspect and/or replace since I am "in there" anyway.

If I do this - I will take lots of pics and make a full tutorial for tf.com

Thanks,
Andy

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ZANE

02-15-2002 05:25:40




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 Re: Front Shaft Bearing in the tranny??? TRACTOR SPLIT TRICKS/INFO? in reply to Andy - Hammond, LA, 02-14-2002 05:52:08  
The best and easiest way to do this is to attach a chain hoist to the steering wheel and put a rolling floor jack under the clutch housing.Remove the caps from the radius rods at the front of the running boards. Remove the bolts from the steering sector where it bolts to the clutch housing. Remove any wires to the rear of the tractor such as tail or work lights. Remove the battery and the bolts that are around the circumference of the clutch housing.Tie a rope around the hood and the oil pan to help support some of the weight. I never did this but it just might be less stressful on the other stuff that will be hanging from the steering wheel.
Raise the chain hoist and the battery box will come above the clutch housing and allow it to clear when the rear of the tractor is rolled back. This is a good time to also check to be sure all the bolts in the Auxillary transmission are tight because they are famous for falling off the front of the transmission when they get some age on them.
I would also check the clutch condition by removing the pressure plate and inspect it closely for broken springs or loose rivets holding the facing on. Also check the pilot bearing or bushing in the flywheel for wear.

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SteveB(wi)

02-14-2002 08:19:29




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 Re: Front Shaft Bearing in the tranny??? TRACTOR SPLIT TRICKS/INFO? in reply to Andy - Hammond, LA, 02-14-2002 05:52:08  
I used an engine hoist on wheels w/a strap to hold up the front so I could move it around. I also cut a cardboard cover I bolted on the top to keep out dirt etc. I found my input shaft housing literally broken at the front of the trans and the pilot bearing in pieces. I don't think all the neutral drops and clamping the governer arms when we were teens helped it any :o)



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raytasch

02-14-2002 07:43:05




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 Re: Front Shaft Bearing in the tranny??? TRACTOR SPLIT TRICKS/INFO? in reply to Andy - Hammond, LA, 02-14-2002 05:52:08  
Two questions before you do anything.
Has the noise been there a while and getting worse?
Does the noise go away if the clutch is depressed, say and inch--not full depression?
ray



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raytasch

02-14-2002 06:53:02




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 Re: Front Shaft Bearing in the tranny??? TRACTOR SPLIT TRICKS/INFO? in reply to Andy - Hammond, LA, 02-14-2002 05:52:08  
Andy, From your discription of the noise I think you may be getting your horse excited.
My SWAG is you have the main shaft bearing talking to you. If that is all that is noisy, removal requires a front split and a fairly simple job. Like someone else said, inspect your clutch components while in there. If there are other problems in the transmission that requires a full tear down you will need a rear split also to disassemble the tranny; a little more involved. I would drain the tranny oil at least a day in advance so you can see what is in the bottom of the transmission. Get a good bright light and a slim magnet that you can determine what kind of filings or wear particles in the bottom of the case. Inspect all the gears for chips. Any chips or heavy deposits of steel 'fuzz' that comes out on the magnet would be concerns. If you have a noisy bearing you are going to have some 'fuzz'.
When you tear into it be sure to block each section well. Someone posted pictures of a jack bolted to the rear section a while back. I have found that a garage jack works well. Two garage jacks work better. Invite a friend to help rolling the sections apart; refreshments after the work, of course. One person can easily do the work. I imagine you'll get lots of advice on this job.
Many thanks for the folder space.
Good luck,
ray

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Luc Van 8N46492

02-14-2002 11:11:46




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 Re: Re: Front Shaft Bearing in the tranny??? TRACTOR SPLIT TRICKS/INFO? in reply to raytasch, 02-14-2002 06:53:02  
That posting was by Ed Gooding (VA) on June 21, 01 and was titled "Tractor Splitting Stand".

I have split my 8N twice, experience shows that they advice so far contained here is valid, read the historical posts on this subject, they helped me a lot! The FO4 manual is good but the years of experience here is invaluable!



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Jhill

02-14-2002 07:37:58




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 Re: Re: Front Shaft Bearing in the tranny??? TRACTOR SPLIT TRICKS/INFO? in reply to raytasch, 02-14-2002 06:53:02  
I split mine by myself with a floor jack and some blocking on a good flat cement floor. Went pretty easy. Be sure to block up the from axel so the wheels don't turn and collapse.



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Richard(WY)

02-14-2002 06:47:34




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 Re: Front Shaft Bearing in the tranny??? TRACTOR SPLIT TRICKS/INFO? in reply to Andy - Hammond, LA, 02-14-2002 05:52:08  
Andy, block up the front(engine half)of the tractor. bolt a trailer jack with the solid wheel on it to the rear half where you split it in two. Get a good jack, not a cheapo. then roll the rear end away straight back and voila you have a tricycle to work on. From what you said it sounds like it is a tranny bearing. Good luck. Dont forget to drain it first!



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Barnstormer

02-14-2002 08:30:01




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 Re: Re: Front Shaft Bearing in the tranny??? TRACTOR SPLIT TRICKS/INFO? in reply to Richard(WY), 02-14-2002 06:47:34  
When you block up the front (engine) remember that the whole thing is sitting on the front axle with only the axle pin, a single point. Geometry says it takes three points to determine a plane.
You can make a cradle to sit the engine oil pan in, bolt some irons to the engine block flange that faces the transmission or any number of other ideas that may surface here. I ususally tap some wood wedges underneath the front axle on either side and then block the wheels and put a jack stand under the engine.
Be safe.

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DavidO

02-14-2002 06:17:34




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 Re: Front Shaft Bearing in the tranny??? TRACTOR SPLIT TRICKS/INFO? in reply to Andy - Hammond, LA, 02-14-2002 05:52:08  
Throw out bearing (OK, clutch release bearing), if bad, would make noise when clutch is pressed, not when released. Sound like transmission bearing. I would take a good look at all of the clutch components (clutch, clutch release bearing, pressure plate, and flywheel) while I was in there and repair/replace anything that was marginal. If you have to take the transmission apart, I would replace All of the bearings. They don't cost much and if one is worn enough to whine, the others probably have a lot of wear too. Don't forget seals and gaskets. I would look at the shop manual for the parts numbers and get every seal and gasket shown. Again they don't cost much. Do it right and you will not have to do it again for a very long time. Good luck with it. I am anxious to see the pictures.

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