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Farmall & IHC Tractors Discussion Forum
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Farmall CNKS I need some advice

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fenton

11-24-2005 06:14:43




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On the 52 Farmall Super A, got the hydro pump apart. I"m looking at two opposing gears in a brass fitting.I don"t see a shaft that you guys had mentioned before with a seal on it that might be the problem causing hydro oil to go into the engine block. What it does have is a rubber O ring that goes around the outside of the two gears.I"m assuming that might be the culprit? It looked ok, but was a bit stiff so maybe it had flattened or dried out some causing the blow by into the engine. One gear is removable and there are no apparent seals on it"s shaft, the other gear seems to be fixed in and does not come out and I"m not forcing anything as we all know what that can do. So.....I guess I replace the O ring and hope that"s it? Seems way too simple...

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gene bender

11-24-2005 08:55:25




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 Re: Farmall CNKS I need some advice in reply to fenton, 11-24-2005 06:14:43  
Some of those pumps had an o-ring for the seal. Check where the o-ring goes on the shaft and if its worn there you need a speedy sleeve to get a good seat for the new o-ring.



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Peabody

11-24-2005 06:52:07




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 Re: Farmall CNKS I need some advice in reply to fenton, 11-24-2005 06:14:43  
Fenton, the big O-ring is NOT the culprit. If it were bad, the pump leak would be visible on the surface of the pump. The culprit is the seal on the one removable gear, which engages with the governor gear. The seal is probably still attached to the housing, but is removable. Take another look. The leak occurs at that seal around the removable (or drive) gear and the fluid drains into the oil pan via the governor gearing. Good luck & happy Thanksgiving!

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fenton

11-24-2005 07:17:27




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 Re: can't seem to find the seals in reply to Peabody, 11-24-2005 06:52:07  
Peabody, I looked at the housing and the removable gear and don't see any seal, other than what looks like brass inserts in both gear shaft holes on the housing body. Those look to be set in and very tight making removal difficult. I looked at the other attached half of the unit with the two gears coming out and took out the removable gear and in that hole is also a set in (I think) brass seal? The gear shafts are not worn or grooved in any way and the holes that the shafts sit in look good also, no apparent wear.

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Bob

11-24-2005 06:28:36




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 Re: Farmall CNKS I need some advice in reply to fenton, 11-24-2005 06:14:43  
Seal is item #6.

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