Throw-out bearing horror stories? Repairs?

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Shane Nelson
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Throw-out bearing horror stories? Repairs?

Postby Shane Nelson » Tue Jul 17, 2018 10:52 am

I took this throw-out bearing out of a 1949 Cub about 5 years ago and put it under the saw. I didn't look at it when I took it out just put a new clutch assembly in the tractor. The Cub I bought a few weeks ago needs some clutch work so I thought about this throw-out bearing and picked it up this morning. I had no idea it had IH on it, there is a little wear on the graphite face on the bottom. The pins are worn horribly. I couldn't believe the little wear on the face and the amount of wear on the pins.
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Shane Nelson
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1947 Circle Cub #1447 (Arnold)
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1993 Ford 4630 W/Loader
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1961 Cub Cadet Original
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Location: Oak Ridge, N.C.

Re: Throw-out bearing horror stories? Repairs?

Postby Shane Nelson » Tue Jul 17, 2018 10:53 am

I hit the face on the belt sander and took about 1/16" or less off of it and it looks great so I welded the pins and took the hand grinder to them and I think it's usable again. I wonder if you could say the same about an aftermarket throw-out bearing? Time to soak this one in some oil.
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Smokeycub
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Re: Throw-out bearing horror stories? Repairs?

Postby Smokeycub » Tue Jul 17, 2018 3:02 pm

Nice. Looks like it should work alright.
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Re: Throw-out bearing horror stories? Repairs?

Postby Willy » Tue Jul 17, 2018 3:12 pm

Heck, I'd be proud to have revived it.
Waking up the ol' Cub

Nah, it's not leaking oil. It's just marking it's territory.

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Ben B
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Re: Throw-out bearing horror stories? Repairs?

Postby Ben B » Wed Jul 18, 2018 4:35 am

How'd you get that thing so clean? That looks really good, and looks better than the one working in my '50 cub right now.
Bravo Romeo Bravo

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Shane Nelson
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Re: Throw-out bearing horror stories? Repairs?

Postby Shane Nelson » Wed Jul 18, 2018 6:31 am

Ben B wrote:How'd you get that thing so clean? That looks really good, and looks better than the one working in my '50 cub right now.

Wire brush on a bench grinder.
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Rick Prentice
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Re: Throw-out bearing horror stories? Repairs?

Postby Rick Prentice » Wed Jul 18, 2018 10:11 am

There needs to be more conversation about the holder that holds the TOB. I've had to separate the 2 halves before and tweek each side to achieve 2 results. 1st result to make sure the holder centers the bearing from left to right. 2nd result to apply enough tension on each side to "hold" the bearing from just flopping forwards, resulting in the bearing constantly moving/vibrating as it touches the rotating pressure plate fingers. Lack of grease and constant movement is what causes those side ears to wear(my opinion).
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Shane Nelson
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Tractors Owned: .
1947 Circle Cub #1447 (Arnold)
195? Cub
1970 International 140 (Norman)
1949 John Deere A
1972 Schramm Pneumatractor
1993 Ford 4630 W/Loader
1965 John Deere 110
1961 Cub Cadet Original
Circle of Safety: Y
Location: Oak Ridge, N.C.

Re: Throw-out bearing horror stories? Repairs?

Postby Shane Nelson » Wed Jul 18, 2018 1:09 pm

Rick, what you said makes perfect since. I've never thought about bending the holder to where it's tight on the bearing to prevent flopping. Along with that the fingers on the pressure plate also need to be adjusted equally so they don't push in different spots as they spin to wear the throwout bearing and holder as well. Imagine how fast the pressure plate is spinning and that bearing is taking a ride and if it's wiggling a little bit that is transferred into the holder via those 2 small ears.

On a side note: for some reason I greased this bearing before welding on it and after welding the grease was coming out of the graphite like oil, this one should be good for a while. It's soaking in oil right now as well.
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Make prayer a 1st priority, instead of a last resort.
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Re: Throw-out bearing horror stories? Repairs?

Postby indy61 » Wed Jul 18, 2018 10:33 pm

I don't understand the need to lube the graphite, I thought it is a natural lubricant. I'm not saying it's wrong, I just don't know.
Some old cars like a Jaguar E-Type used a very similar carbon clutch release bearing that had no grease zerk and to be installed dry. Some have said that an oil leak can shorten the life of the clutch.

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Re: Throw-out bearing horror stories? Repairs?

Postby Gary Dotson » Thu Jul 19, 2018 6:43 am

I don't think it's truly graphite but a phenolic material of some variety. If you rub your finger across a graphite surface, you get a silver, shiny finger. Not so much with the Cub throw out bearing.


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