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Ford Tractors Discussion Forum
:

4140 Industrial - PS leak at top of column - see pic

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Threewilsons

09-30-2019 11:17:45




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Still working on getting the 4140 together and discovered a power steering leak at the top of the column, see picture. I m looking for insight on where to start. The rest of the sheet metal is off and so getting this exposed will be no problem.
Thank you!

Joel






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Tony Jacobs

10-05-2019 18:33:36




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 Re: 4140 Industrial - PS leak at top of column - see pic in reply to Threewilsons, 09-30-2019 11:17:45  
Hello Joel , I hope you ordered the rest of the seals for the steering box plus the two centering springs in the control valve otherwise you will be right back where you started , leaking again . I have rebuilt dozens of these boxes . Why would you go thru all that restoration work and not disassemble everything to at least inspect and replace seals , gaskets and o-rings at a bare minimum? Did you locate the correct lug nuts for the rear ? Your tractor must be a 64 or 65 because those are the only two years They came installed from the factory . Earlier tractors they would have been over the parts counter replacements . Both my 64 and 65 4140 4x4 s have those lugnuts and thicker wheel centers and my 64 has the 1 5/16 wheel weight studs on it , the only set I have ever seen and I have had over three dozen Heavy Duty Industrials not to mention all of the Light Duty Industrials because they also had the large lug nuts . Never seen them on even 65 AG tractors and I have 5 of them here also . Thanks Tony

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Threewilsons

09-30-2019 19:01:34




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 Re: 4140 Industrial - PS leak at top of column - see pic in reply to Threewilsons, 09-30-2019 11:17:45  
Bern, not Been! Spell checker got me and I can t edit for some reason.
Thanks again Bern.



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Threewilsons

09-30-2019 19:00:25




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 Re: 4140 Industrial - PS leak at top of column - see pic in reply to Threewilsons, 09-30-2019 11:17:45  
Bern, not Been! Spell checker got me and I can t edit for some reason.
Thanks again Bern.



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Threewilsons

09-30-2019 18:57:21




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 Re: 4140 Industrial - PS leak at top of column - see pic in reply to Threewilsons, 09-30-2019 11:17:45  
Quoting Removed, click Modern View to see

Been you re right. When I disassembled it, the oil seal was intact but looked a little wonky. I went to the local seal store and ordered one, actually two. It seems no one has inventory anymore and so I m three days away from reassembly.
But, I am now concerned that the leak, albeit small, may have pressure behind it - since the system has to hold considerable pressure. That oil seal won t hold much pressure - actually I don t know how all of this works so I m probably worried about nothing. I destroyed the seal removing it but here is what it looks like.

Thanks again!

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Bern

09-30-2019 20:30:30




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 Re: 4140 Industrial - PS leak at top of column - see pic in reply to Threewilsons, 09-30-2019 18:57:21  
There shouldn't be a lot of back pressure against that seal. If there is, you have some sort of excessive restriction in the return side of your pump reservoir, like maybe a plugged filter.

I don't know for a fact that the filter is on the return side of the system like it is on the later models, but if it is, a plugged filter could definitely be the reason for the seal leak.



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Threewilsons

09-30-2019 11:57:16




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 Re: 4140 Industrial - PS leak at top of column - see pic in reply to Threewilsons, 09-30-2019 11:17:45  
Looking at the exploded view, my guess is #3 or #4 or both.



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Bern

09-30-2019 18:00:21




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 Re: 4140 Industrial - PS leak at top of column - see pic in reply to Threewilsons, 09-30-2019 11:57:16  
#3 no. #4, definitely.



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