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Minneapolis Moline Tractors Discussion Forum

hydraulic oil through pump???

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Bindics

08-30-2007 05:46:38

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Do any of you know.... is it possible for hydraulic oil to get into the crank case through the pump? If so, what seal/part would I need to repair the problem? Thanks! You can also reply directly to [email protected]

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P Luna

08-31-2007 03:00:06

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Re: hydraulic oil through pump??? in reply to Bindics, 08-30-2007 05:46:38

Hydraulic oil can enter the crankcase because the shaft seal on hydraulic pump is leaking.Problem can be cured by replacing shaft seal in pump.Make sure too check shaft for wear.

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T.R.K.

08-30-2007 17:42:35

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Re: hydraulic oil through pump??? in reply to Bindics, 08-30-2007 05:46:38

How can we tell you what seal-if we even know-if you don't tell us what tractor the pump is on?

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Bindics

08-30-2007 18:29:31

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Re: hydraulic oil through pump??? in reply to T.R.K., 08-30-2007 17:42:35

(Sorry! this is the wife typing - you'll have to excuse my lack of knowledge on this stuff!) It's a Moline ZB 1949.

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T.R.K.

09-01-2007 19:20:43

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Re: hydraulic oil through pump??? in reply to Bindics, 08-30-2007 18:29:31

two things: MM only made the ZB from 1953 to 1955. Either the year is wrong or you have a ZA.

The second thing is you need to know if your pump is an Eaton or Webster. (The Eaton pumps had some problems. There was a kit to replace it with the Webster that used a different suction pipe.) ZA and ZB tractors used the same pumps, so the tractor model is not an issue as far as getting a seal goes.

The Eaton pump was pretty much round. It had a rotor type pumping system. The Webster pump has an oblong body. The Webster pumps I have seen have a tag on them, but I think it is either on the bottom or next to the engine.

After you determine which pump you have, Call Welters 417-498-6496, or Wendell Everett 740-922-3335. Either one should be able to help you with a seal. If not, get back on here with another post.

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Curt Cooke

08-30-2007 06:25:46

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Re: hydraulic oil through pump??? in reply to Bindics, 08-30-2007 05:46:38

Yes

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