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Ford Tractors Discussion Forum

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

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Author  [Modern View]

09-30-2019 18:57:21

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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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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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