620 rod journal size?

I have read several post about this, but I have seen that the rod journal original diameter was 3.377 and also seen 3.375. Which one is it?

Thanks in advance
 
(quoted from post at 08:16:24 08/12/14) I have read several post about this, but I have seen that the rod journal original diameter was 3.377 and also seen 3.375. Which one is it?

Thanks in advance

I bought a I&T manual and it list it as 3.375".
 
(quoted from post at 08:16:24 08/12/14) I have read several post about this, but I have seen that the rod journal original diameter was 3.377 and also seen 3.375. Which one is it?

Thanks in advance

The late Great Duane Larson compiled all the JD two cylinder service bulletins on PDF. All the obscure data is listed there. iirc his estate still sells the info.
 
(quoted from post at 13:27:47 08/13/14)
(quoted from post at 08:16:24 08/12/14) I have read several post about this, but I have seen that the rod journal original diameter was 3.377 and also seen 3.375. Which one is it?

Thanks in advance

The late Great Duane Larson compiled all the JD two cylinder service bulletins on PDF. All the obscure data is listed there. iirc his estate still sells the info.

Thank you
 
(quoted from post at 13:27:47 08/13/14)
(quoted from post at 08:16:24 08/12/14) I have read several post about this, but I have seen that the rod journal original diameter was 3.377 and also seen 3.375. Which one is it?

Thanks in advance

The late Great Duane Larson compiled all the JD two cylinder service bulletins on PDF. All the obscure data is listed there. iirc his estate still sells the info.

I took my crank to the machine shop today. It is going to require the .030 undersized rod bearings. I told th I wanted the rod journals finished at 3.345. This should be correct. Any input would be nice.
 
(quoted from post at 20:13:40 08/14/14)
(quoted from post at 13:27:47 08/13/14)
(quoted from post at 08:16:24 08/12/14) I have read several post about this, but I have seen that the rod journal original diameter was 3.377 and also seen 3.375. Which one is it?

Thanks in advance

The late Great Duane Larson compiled all the JD two cylinder service bulletins on PDF. All the obscure data is listed there. iirc his estate still sells the info.

I took my crank to the machine shop today. It is going to require the .030 undersized rod bearings. I told th I wanted the rod journals finished at 3.345. This should be correct. Any input would be nice.

right here http://www.jd2cylservice.com/
 
Just wanted to let everyone know that the I&T manual was correct on the rod journal size for my tractor. I didn't want to spend the money on the service updates so I took a chance on the I&T. Worked out perfect. Wanted to add it here in case someone else looks for the same info this may be of some help.
 

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