[AT] [Farmall] @$#@$#% Cub - red engine oil

[Mike Sloane]

I actually bought a 1/2" Chicago Rawhide "speedi-sleeve for the pump 
that was badly damaged. I forgot the reason, but I couldn't use the 
sleeve - I think that there wasn't enough room between the pump housing 
and the drive gear. I suppose, if I had a lathe, I could have put it on 
an arbor and cut the sleeve shorter, but I don't have a lathe. I still 
have the sleeve, as they are "non-returnable" once the package has been 
opened.

The only way that I think would do the job properly would be to spatter 
weld additional material on the groove and then precision grind it down 
to the proper finish. I still have the damaged pump (somewhere in my barn).

Mike

charliehill wrote:
> Mike have you ever tried to repair the groove in one of those shafts with a 
> speedy sleeve?  Also,  it looks to me like there is enough room on the shaft 
> to turn it down and press fit a bushing on the damaged area.  Hard to tell 
> looking at a picture and not knowing how it goes back together.
> 
> 
> ----- Original Message ----- 
> From: "Mike Sloane" <mikesloane at verizon.net>
> To: "Farmall/IHC mailing list" <farmall at lists.antique-tractor.com>
> Cc: "Antique tractor" <at at lists.antique-tractor.com>
> Sent: Saturday, August 15, 2009 6:37 AM
> Subject: Re: [AT] [Farmall] @$#@$#% Cub - red engine oil
> 
> 
>> This is a very common problem with older Cubs. The O ring on the pump
>> drive shaft gets dried out and permits hydraulic fluid to be pumped past
>> it into the engine. The seal is a standard SAE O ring, nothing special,
>> as are the two O rings on the back of the pump where the manifold pipe
>> is bolted up. (Case IH sells a pump "overhaul" kit that consists of the
>> O rings and some gaskets, plus a page of instructions.) After you remove
>> the old ring, look at the pump shaft carefully, If there is no damage to
>> the pump shaft, you can just replace the O ring and put everything back
>> together. If the ring has hardened and cut into the shaft, you have a
>> problem that is is pretty much impossible to repair if it is too deep. I
>> had one that I was able to just polish the shaft a little and use a
>> slightly thicker O ring, but on another one the groove was really deep
>> and could only be fixed by replacing the pump.
>>
>> See
>> <http://public.fotki.com/mikesloane/1952-farmall-cub/leakinghydraulicpump.html>
>> for a view of the shaft. In the image, I have a screw as a "pointer"
>> indicating the area of concern. Usually a light application of steel
>> wool or even very fine emery cloth is sufficient to restore the surface
>> to usability.
>>
>> I hope this helps,
>>
>> Mike
>>