[Farmall] 1950 cub oil filter bolt

[Jim Becker]

Two answers to this question, depends on which engine block you have.  If 
your engine block has part number 251341R1 through 251341R7, there is an 
adapter screwed into the block that the bolt screws into.  The adapter is 
part 251390R1, which Messicks still shows available for less than $10.  Get 
a replacement adapter and bolt and you are back in business.  You can 
probably get the parts from somebody that has a junk engine block.  If you 
happen to have block number 251341R8 (which started at engine number 245701) 
you will probably have to do as Mike suggested.  Here is the parts catalog 
page that shows the adapter:
http://www.cleancomputes.com/Cub/Cub%20Parts%20Manuals/TC-37C%20Parts%20Catalog%20(08-29-52)/Engine/Page-19.jpg

If your tractor has the original engine, it will be one with the adapter. 
By the way, there were two different bolts.  One for blocks with the 
adapter, another for those without.
Jim Becker

--------------------------------------------------
From: "Mike Sloane" <mikesloane at verizon.net>
Sent: Sunday, March 21, 2010 8:13 AM
To: "Farmall/IHC mailing list" <farmall at lists.antique-tractor.com>
Subject: Re: [Farmall] 1950 cub oil filter bolt

> I am sure others will have their thoughts, but here is what I would do:
>
> I would run a correct size plug tap very gently down through the
> casting. If it runs through with little effort, then I would just leave
> that part alone. If the block casting is badly damaged, then an insert
> (or brazing and re-drilling/tapping) might be your only alternative, and
> I would leave something like that up to a machine shop to handle.
>
> Then I would run a die gently over the bolt threads to see if the
> threads can be restored. That bolt doesn't need huge amounts of torque
> to seal the filter housing, so you don't need perfect threads. If the
> bolt is ruined, a replacement, new or used should not be hard to find.
>
> Mike
>
> Robert Luscomb wrote:
>> Hello all, this is my 1st post and I have real doozey for everyone.
>> Just got my 1st cub she is a 1950 6v, w/ j-4 magneto. I removed the
>> filter bolt and it was stripped out, well cross threaded. Any
>> suggestions on how I should go about repairing this. Thanks for the
>> advice in advance. Bert
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