connecting rods

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yellow52
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connecting rods

Postby yellow52 » Thu Apr 23, 2015 5:59 pm

I have a 52 cub (yellow). engine is original and has never been torn down. I had to replace the rings and after everything was going great, one of the nuts on a connecting rod stripped. First I have not figured out the best way to get it off the bolt, and second I have been told 2 different torques to tighten to, one person said around 40 #'s and one said 17#'s. help

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Glen
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Re: connecting rods

Postby Glen » Fri Apr 24, 2015 1:34 am

Hi,
Welcome to the website. Maybe some of the other guys know how you can get the stripped nut off, I am not sure how without seeing it.
The torque in the IH Service Manual, for the connecting rod nuts is 16 foot pounds. Here are pages below. The first page is the manual that the 2nd page is in. Click on the pics makes them bigger. :)

http://www.farmallcub.info/manuals/gss- ... 000-01.jpg

http://www.farmallcub.info/manuals/gss- ... 001-09.jpg

Clip
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Re: connecting rods

Postby Clip » Fri Apr 24, 2015 6:33 am

I'd try one of those splitters to break the nut in place. Looks like a thumb screw with a cold chisel edge. This is without seeing pictures of the current state of things.

yellow52
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Re: connecting rods

Postby yellow52 » Fri Apr 24, 2015 6:42 am

Thanks, I have been around tractors since I was about 6, and have worked on many of them but this is the first time for dealing with rings and pistons. Glad to be a part of this forum.

Charles (49) Mo
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WELCOME

Postby Charles (49) Mo » Fri Apr 24, 2015 9:32 pm

I'm shure all of us together can help. The reverse is true, you might help us too.

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John *.?-!.* cub owner
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Re: connecting rods

Postby John *.?-!.* cub owner » Fri Apr 24, 2015 10:09 pm

If it is stripped and the nut simply spins without backing off, and you are sure it is not the bolt also turning, the threads on the bolt part part probably damaged and it will need replaced also. At this point just cutting it off is probably easiest.
If you are not part of the solution,
you are part of the problem!!!

yellow52
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Re: connecting rods

Postby yellow52 » Tue Apr 28, 2015 6:54 am

Thanks. I am going to just cut the nut off and replace both bolt and nut. Any suggestions on where to find the bolt and nut, or will a regular bolt with a lock nut work?

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bob in CT
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Re: connecting rods

Postby bob in CT » Tue Apr 28, 2015 7:58 am

yellow52 wrote:Thanks. I am going to just cut the nut off and replace both bolt and nut. Any suggestions on where to find the bolt and nut, or will a regular bolt with a lock nut work?


Buy the correct rod bolt and nut from IH. P/N 251 249 R21 It needs to be the proper strength and it needs to balance. You can order online from Messicks or call your local dealer.

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Re: connecting rods

Postby Charles (49) Mo » Tue Apr 28, 2015 8:12 am

Go to Case New Holland = case IH and get them there. Both are special. Look at the PDF manuals at top of page under parts to get BOTH of the correct numbers.

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bob in CT
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Re: connecting rods

Postby bob in CT » Tue Apr 28, 2015 8:18 am

Charles (49) Mo wrote:Go to Case New Holland = case IH and get them there. Both are special. Look at the PDF manuals at top of page under parts to get BOTH of the correct numbers.


The number I posted is an assembly- bolt and nut, according to the manual.

yellow52
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Re: connecting rods

Postby yellow52 » Wed Apr 29, 2015 2:30 pm

Thanks. I got the nut off and will get the replacement tomorrow. Thanks again

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Re: connecting rods

Postby yellow52 » Fri May 01, 2015 5:44 pm

Well I got the shock of a lifetime. Our local case/ih dealer has gone out of business. So I go to the trusty internet to find a connecting rod bolt. I found only one site that had one 59.99 for 1 bolt, not counting the nut. With all the cubs I hear of being salvaged in the tractor graveyards you would think someone would have a bolt + nut. I would hate to but I am wondering if I wouldn't come out better parting out this one.

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bob in CT
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Re: connecting rods

Postby bob in CT » Fri May 01, 2015 5:54 pm

Put a wanted ad in The Vine.

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bob in CT
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Re: connecting rods

Postby bob in CT » Fri May 01, 2015 6:13 pm

yellow52 wrote:Well I got the shock of a lifetime. Our local case/ih dealer has gone out of business. So I go to the trusty internet to find a connecting rod bolt. I found only one site that had one 59.99 for 1 bolt, not counting the nut. With all the cubs I hear of being salvaged in the tractor graveyards you would think someone would have a bolt + nut. I would hate to but I am wondering if I wouldn't come out better parting out this one.

The part number changed, not by much, but it is listed as a bolt for $35.45 at Messicks. By the time they ship it it will be $50. New number for future reference: 251249R2 The new number for a self-locking nut is 232-4615, but that is only 88 cents. Never use a nylon locking nut on a connecting rod. The nylon will not stand up to the temperature.

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Re: connecting rods

Postby Bob McCarty » Fri May 01, 2015 6:58 pm

bob in CT wrote:Put a wanted ad in The Vine.


Or contact JP Salvage (sponsor at the bottom of the page). I'll bet he can fix you up.

Bob
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we need to think differently."
-Albert Einstein


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