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John Deere Tractors Discussion Forum

620 power steering fluid leaking into crankcase

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Author  [Modern View]

06-07-2020 10:41:56

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I have a 57 620 that the power steering fluid was disappearing. Checked the crankcase and it seems to be about three quarts too full. I imagine this is a seal. Anyone have this problem and how hard to fix. Do I have to pull full pump off to fix. According to parts manual there is a part number 26 (seal). Any help would be appreciated.

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06-08-2020 16:28:25

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 Re: 620 power steering fluid leaking into crankcase in reply to bobgrimes, 06-07-2020 10:41:56  
If you move the radiator forward be sure to put a piece of card board so you don't hit the fins when you move the fan forward.

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Dan in Ohio

06-07-2020 12:01:46

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 Re: 620 power steering fluid leaking into crankcase in reply to bobgrimes, 06-07-2020 10:41:56  
Bob your pump is leaking, there are actually two seals, the one next to the fan drive tube is the culprit. My 70 gas std. had the same problem.

Sure as I tell you it can not be fixed on the tractor someone will say they have done it so I will not say that. My recommendation is to remove the two bolts holding the radiator and move it forward about two inches (as far as you can) then it will come out the side. Plenty of info on what you will encounter and how to guidelines from guys who have done this job.

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Dan in Ohio

06-07-2020 14:21:13

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 Re: 620 power steering fluid leaking into crankcase in reply to Dan in Ohio, 06-07-2020 12:01:46  

Here is some info from this site to read. Hope this helps.

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