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Order Ford 4000 Parts Online

Re: 3 cyl 4000 P/S pump seal leaking into engine

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Author  [Modern View]

04-10-2013 16:56:23

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You can try a seal kit - it may or may not work depending on the condition of the bearings. I would pull it apart and see what the bearings look like. If they are bad, spring for a new pump. If the bearings look good and feel tight, install a seal kit. It's not hard.

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04-10-2013 17:23:28

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 Re: 3 cyl 4000 P/S pump seal leaking into engine in reply to Bern, 04-10-2013 16:56:23  
Our 3000 did that, too. In our case, the seal wore a groove into the shaft.

The rest of the pump was in ok shape so I took the shaft to a pro machine rebuilder (they rebuild large industrial machinery). I thought they'd do the standard things - weld the groove & turn the weld back down.

When I got it back, I found they'd cut a wider groove, then built it up with a flame sprayed-on ceramic (hard stuff!), then turned that flush with the shaft diameter.

I asked 'em why they did it this way and they said it's been their experience that welding a small diameter shaft sometimes causes the shaft to bend slightly, and rebuilding and remachining a bowed shaft then becomes a game of tail-chasing. From the welding I've done, I instantly knew what they meant. They said the ceramic is so hard, I'd be dead before the seal wore a groove in that spot again. Cost was $150, info I gained was worth a lot more than that.

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