Second throw out bearing in 1.5+ years

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Re: Second throw out bearing in 1.5+ years

Postby Matt Kirsch » Thu Jan 11, 2018 7:11 am

Our collective understanding of the way these graphite bearings work is that they become soaked with the oil that separates out of the grease. Experience has also shown that dry graphite throwout bearings don't last long on Cubs.

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Re: Second throw out bearing in 1.5+ years

Postby Jim Becker » Thu Jan 11, 2018 11:20 am

indy61 wrote:I wonder if soaking the carbon in oil/grease is really a good idea.
I have read a few forums on vintage European cars that use very similar tob's and they say not to. I don't know.

When you get a new bearing from CaseIH, it seems to be pretty thoroughly oil soaked in advance.

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Re: Second throw out bearing in 1.5+ years

Postby treesitter » Thu Jan 11, 2018 12:22 pm

Thanks for all of the comments gentleman and other reading material. After unhooking everything last night to prep for the split, I was looking at and rubbing the TOB again through the hand hole and I will say the graphite does appear/feel pretty dry, although I do see some grease along the inner ring of the housing. But the graphite seems very dry from my limited inspection thus far. When I get the old TOB out I'll post a picture for a little TOB CSI....

Two things I am suspecting thus far- 1. I did not let the TOB marinate nearly long enough and did not use cheap enough grease. 2. I assumed a TOB was a TOB and did not pay any attn to who makes it and how, etc. I believe the one I am marinating now I bought from TM and I just ordered one directly from my local Case IH dealer.
All she did when she first saw it was stand there looking at it, shaking her head,
while my buddy and I stood there drinking beer, grinning over my fine purchase.

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Re: Second throw out bearing in 1.5+ years

Postby Don B. » Thu Jan 11, 2018 12:29 pm

I was thinking the TOB from TM are 'pre-marinated'.
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Re: Second throw out bearing in 1.5+ years

Postby ScottyD'sdad » Thu Jan 11, 2018 12:31 pm

Don B. wrote:I was thinking the TOB from TM are 'pre-marinated'.


They are pre greased, before shipping.
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Re: Second throw out bearing in 1.5+ years

Postby treesitter » Thu Jan 11, 2018 12:40 pm

Glen wrote:Hi,
Try to find a good quality throwout bearing. The guys on here say TM Tractor has quality parts.
I've never used one from there, but you can look at it. They are not showing how far the material sticks out of it. The material should stick out of a new bearing 5/16", the Cub owner's manual shows.

http://www.tmtractor.com/new/cl/378fp.htm

I guess you have a Cub with the first style of free play adjustment, they changed the adjustment at serial number 32229.
Below is a page from the 1947 Cub owner's manual showing the clutch.

http://farmallcub.com/rudi_cub/www.clea ... age-40.jpg

Thanks for this pic and I should have dug through Rudi's stuff for this when I tackled it the first time. For those of you who don't have one of these early models with this configuration, be glad (in my opinion). My Cub SN is in the 20,000 range; 25,000ish, or near there.

Below is a pic of a new throwout bearing. :)
All she did when she first saw it was stand there looking at it, shaking her head,

while my buddy and I stood there drinking beer, grinning over my fine purchase.

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Re: Second throw out bearing in 1.5+ years

Postby inairam » Thu Jan 11, 2018 2:04 pm

ScottyD'sdad wrote:
Don B. wrote:I was thinking the TOB from TM are 'pre-marinated'.


They are pre greased, before shipping.
Ed



TM TOB are greased but not marinated.
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Re: Second throw out bearing in 1.5+ years

Postby LeeC » Fri Jan 12, 2018 7:54 am

A thought on "cheap grease" for the TOB. A lower NLGI rated grease will tend to separate at a lower temperature. I use https://www.tractorsupply.com/tsc/product/traveller-multi-purpose-lithium-grease-14-oz. It is not as much the cost as that it is a NLGI 1.5 grease with a temperature range of 0 to 200 deg F vs. the TSC NLGI 2.0 grease which has a temperature range of -40 to 300 deg F. --Lee
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Re: Second throw out bearing in 1.5+ years

Postby BigBill » Fri Jan 12, 2018 2:08 pm

A throwout bearing is a throwout bearing there is different designs, I didn’t read every post sorry but with all my many years of mechanic experiences I find the biggest problem with throwout bearing is the installer didn’t adjust the throwout bearing so it has a space between the pressure plate fingers, by not having a space the fingers are wearing the throwout bearing out.

I use the moly grease from TSC.

On some clutches if you adjust the throwout bearing too close to the fingers the fingers can hit the clutch disc when the clutch pedal is fully depressed. My point is the proper clutch adjustment is very important.
I'm technically misunderstood at times i guess its been this way my whole life so why should it change now.

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Re: Second throw out bearing in 1.5+ years

Postby ScottyD'sdad » Fri Jan 12, 2018 2:22 pm

inairam wrote:
ScottyD'sdad wrote:
Don B. wrote:I was thinking the TOB from TM are 'pre-marinated'.


They are pre greased, before shipping.
Ed



TM TOB are greased but not marinated.


That's what I meant. Didn't mention marinating, because it isn't done.
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Re: Second throw out bearing in 1.5+ years

Postby treesitter » Sat Jan 13, 2018 11:28 pm

Here are some pics of the TOB I took out. Haven't measured the fingers yet but visually don't look out of whack.
Attachments
6674.jpeg
6678.jpeg
Last edited by treesitter on Sun Jan 14, 2018 12:00 am, edited 1 time in total.
All she did when she first saw it was stand there looking at it, shaking her head,

while my buddy and I stood there drinking beer, grinning over my fine purchase.

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Re: Second throw out bearing in 1.5+ years

Postby Dale Finch » Sat Jan 13, 2018 11:33 pm

The throwout bearing isn't supposed to spin. It pushes onto the spinning clutch fingers, depressing them. That is why they MUST all be at the same proper level. If the bearing is not lubricated well, there is a lot of friction = wear. If the fingers on not even, and at the proper level = rough contact = broken bearing.

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Re: Second throw out bearing in 1.5+ years

Postby Landreo » Sun Jan 14, 2018 8:44 am

Looks like the result of bad adjustment or too much play in the clutch linkage, i.e. the holes in the fork that hold the carrier.

Graphite is slippery by itself and is and although the porosity will vary depending on the type of graphite not much oil is really going to soak through. It does not hurt to soak in oil but I would expect only slight effects. Soaking in oil is not going to fix alignment problems, poor quality bearings, adjustment problems, missaligned or rough finger faces, etc....

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Re: Second throw out bearing in 1.5+ years

Postby treesitter » Sun Jan 14, 2018 9:13 am

Thanks Glenn and landreo. Yes, I am suspecting improper adjustment too. I put a new yoke on last time. My old one had a lot of play in the holes. I'll be getting into it again tonight and tomorrow.
All she did when she first saw it was stand there looking at it, shaking her head,

while my buddy and I stood there drinking beer, grinning over my fine purchase.

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Re: Second throw out bearing in 1.5+ years

Postby Mrcordova » Sun Jan 14, 2018 1:50 pm

I'm new to this website, do you know how to start a post?


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