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  1. #1
    Silver Member Circle W's Avatar
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    May 2013
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    Lone Chimney, OK
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    John Deere 820

    Default John Deere 820 hydraulics

    I am fairly new to the tractor scene, but have learned a few things about them since I now have one. I have a 1968 John Deere 820 that runs great. I've recently changed a bent drag link and one of the steel hydraulic lines. Like I said, after those repairs the thing has run great. But when I checked the hydraulic dipstick near the right foot plate, I noticed that I was above the fill line. How can I drain some of the fluid out of there or is it ok to have a little bit extra? Also, the fluid appears to be sort of creamy colored (almost gravy colored), should I be concerned? Any advice is appreciated, thanks.

  2. #2
    Elite Member Tx Jim's Avatar
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    Jan 2007
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    4,592
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    Coyote Flats,Tx
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    JD 4255/Kubota M7040 HDC

    Default Re: John Deere 820 hydraulics

    Cream colored hyd oil indicates moisture in the oil. Moisture is detrimental to brake linings. I'd recommend changing the oil & filter. JD recommends Hy-Gard oil or it's equivalent. Oil is supposed to be checked with engine running.

  3. #3
    Platinum Member
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    Nov 2012
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    mansfield,Il
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    john deere

    Default Re: John Deere 820 hydraulics

    Yep you need to change fluid and filter .

  4. #4
    Silver Member Circle W's Avatar
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    Lone Chimney, OK
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    John Deere 820

    Default Re: John Deere 820 hydraulics

    Thanks guys. So how do I get to the filter?

  5. #5
    Gold Member
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    Mar 2005
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    360
    Location
    The Real Central PA
    Tractor
    BX25D, JD 820

    Default Re: John Deere 820 hydraulics

    Filter is inside a cover under the tractor near the rear axle. Remove the retaining bolt and the cover can be removed. Replacement filter should come with a new o-ring for the cover. I believe there is also a drain plug in the same general area. It's been several years since I replaced my filter. I need to do it again soon. Not looking forward to it, as I recall it was a rather messy job.
    If ignorance is bliss, then why aren't more people happy?

  6. #6
    Gold Member
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    Mar 2005
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    360
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    The Real Central PA
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    BX25D, JD 820

    Default Re: John Deere 820 hydraulics

    Actually, it might drain through the filter cover. It's been so long that I just don't remember.
    If ignorance is bliss, then why aren't more people happy?

  7. #7
    Gold Member
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    Mar 2005
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    The Real Central PA
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    BX25D, JD 820

    Default Re: John Deere 820 hydraulics

    How many hours on your 820? I'm at about 5775, was about 4200 when I bought it.
    If ignorance is bliss, then why aren't more people happy?

  8. #8
    Silver Member Circle W's Avatar
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    May 2013
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    Lone Chimney, OK
    Tractor
    John Deere 820

    Default

    Thanks everyone, hopefully I can take it from there. I honestly don't know how many hours it has on it. The only gauge that still works is the temperature gauge.

  9. #9
    Elite Member Tx Jim's Avatar
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    Coyote Flats,Tx
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    JD 4255/Kubota M7040 HDC

    Default Re: John Deere 820 hydraulics

    Trans drain is close to hyd filter in bottom of trans. Removing trans filter will not drain trans oil.

  10. #10
    Gold Member
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    Mar 2005
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    The Real Central PA
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    BX25D, JD 820

    Default Re: John Deere 820 hydraulics

    That's correct Jim. My operators manual actually shows two drain plugs, one near the filter cover and one on the other side of the trans. Also there is an intake screen cover that should be removed and the screen cleaned when the filter is changed.
    If ignorance is bliss, then why aren't more people happy?

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