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  1. #1
    New Member
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    Oct 2011
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    3
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    John Deere 2040

    Default John Deere 2040 Hydraulic Problem

    I inherited a John Deere 2040 (80s model) and let someone use it. Love it and loved working it as a kid but now it is mine to maintain which Dad always did So, after loaning it out ....the hydraulics will no longer work for the aftermarket installed front-end loader and the three point hitch. The differential lock petal below the seat on the left side appears to be much looser than normal but this should not affect the hydraulics. Any ideas on the hydraulics. I can not even move the tractor because there is NO HYDRAULIC and the loader will not lift up at all. But the fluid on the stick says full Thanks for any help and have a great day...I looked for a manual online put I could not find one so I am asking. Thx ps: Does anyone have a pdf of the owners manual or know where I could purchase on on-line? Also how to I unlock the differential lock...

  2. #2
    Gold Member Glen Watkins's Avatar
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    Dec 2009
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    490
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    Finger Lakes Region of New Yorkistan FUAC
    Tractor
    2007 John Deere 4320 Cab Tractor

    Default Re: John Deere 2040 Hydraulic Problem

    Sounds like one of the hydraulic quick disconnections is not connected properly. Check all your connections. Some can be difficult to disconnect or reconnect because of pressure build up.
    JD 4320 Cab,6' KK Brush Hog{Old Heavy Version}, 6' Woods Finish Mower, 400x FEL 73" HD Bucket, 3rd Function Kit Installed, 6' AF11 Snow Blade, 60" Root Rake Grapple, Wallenstein FX-90 Skidding Winch...

  3. #3
    Super Star Member
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    Aug 2001
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    11,939
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    Upper Midwest USA
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    JD 4300, JD X485 JD 4x2 Gator, JD 425, JD455

    Default Re: John Deere 2040 Hydraulic Problem

    Getting the diff lock unlocked will be a good idea, as the tractor is likely hard to steer if locked.

    Here is a pic of the parts, and assume it looks like what you have.
    Maybe the spring is broken and needs to be manually moved back to unlock.
    Attached Thumbnails Attached Thumbnails -2040_diff_lock-jpg  

  4. #4
    Platinum Member Henri88's Avatar
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    Nov 2009
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    724
    Location
    Northern N.B.
    Tractor
    2008 JD 2305

    Default Re: John Deere 2040 Hydraulic Problem

    Quote Originally Posted by Glen Watkins View Post
    Sounds like one of the hydraulic quick disconnections is not connected properly. Check all your connections. Some can be difficult to disconnect or reconnect because of pressure build up.
    Wouldn't think so. If he had a bad connection, it still shouldn't affect the lost of his 3PH. I am not familiar with the 2040, but it seem like he has lost all hydraulic pressure which would indicate a HD pump failure, or a clog filter if so equip.
    Henri

    How could you be told I was french?

    Rotary cutter 4' Howse , mid mount mower 54'' , f.e. loader 200CX , tiller RT1150 Frontier , cultivator PC1001 Frontier , middle buster PM1001 Frontier , JD 47'' front snowblower , pallet forks , grass-sweeper , quick hitch Speeco , trailer hitch , cab Jodale-Perry , trailer 16' galvanized Easy-Hauler ,

  5. #5
    Gold Member dntfxr's Avatar
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    Aug 2007
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    348
    Location
    north Louisiana
    Tractor
    Ford/NH, Kubota

    Default

    I would check the hyd pump up front. I would think if you had a clogged screen it would at least squeal or something. Does the power steering still work? I have a service manual if you need any info from it.
    '95 Ford/NH 3930 mfwd
    '83 Ford 3610
    '94 Kubota B7100 mfwd HST
    '14 Ferris is700 61" Vanguard BB

  6. #6
    Elite Member Tx Jim's Avatar
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    Jan 2007
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    4,690
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    Coyote Flats,Tx
    Tractor
    JD 4255/Kubota M7040 HDC

    Default Re: John Deere 2040 Hydraulic Problem

    How long since hyd filter was changed and sump screen cleaned?? What's the tractor serial number? There are 2 types of hyd systems(open vs closed) which are totally different on the 2040's. It could be the frt hyd coupler is the problem.

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