JD59 snowblower hydraulics leak
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Thread: JD59 snowblower hydraulics leak

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    JD59 snowblower hydraulics leak

    Have a JD59 snowblower on a JD3720 tractor. A leak has developed and gotten steadily worse only when the cylinder is lifting the blower.

    If you look on the JDparts diagram, the leak is between parts 16 (elbow fitting) and 15 (union fitting) and appears to be weeping up the threads. I have attempted to tighten the connection - it was already very tight. Anyone know what type of connection this is? The part diagram does not show it but is it possible there is a failed o-ring? If not is this the type of connection that should (or could) have sealant? I donít see any sign of sealant in it now. I also donít see any signs of a crack but Iím know sure one would be visible to the eye.

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    Captain Hook Kennyd's Avatar
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    I could not find the picture quickly in JDP, can you post it?

    The fitting could be NPT, JIC, ORB, or ORFS. Only the NPT requires any sealant.
    Kenny

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    Thanks Kenny.

    Here is the section in JDParts: LIFT CYLINDER AND HOSES (31/33/35/3720 CUTS) - ST630343

    And the image attached.
    Click image for larger version.†

Name:	JD 59 Snowblower lift cylinder.JPG†
Views:	64†
Size:	28.9 KB†
ID:	577193

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    jgayman's Avatar
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    Very doubtful that those fittings have sealant. I looked the part numbers up on JD Parts but they give no details at all which is very odd.
    Last edited by jgayman; 03-25-2018 at 09:15 AM.
    2012 2720 -- 200CX Loader -- 54" Quick Attach Snow Blower -- Frontier LR5060 Rake -- Land Pride RB1660 Blade (Hydraulic Angle) -- Artillian 42" Forks -- Ken's Bolt on Grab Hooks -- Fit Rite Hydraulic top-link -- 2013 X500 for mowing duties

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    Captain Hook Kennyd's Avatar
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    Yes unfortunately there is not enough detail to really know. You will have to take it apart and see.
    Kenny

    -John Deere 3720 Deluxe Cab TLB
    FEL, MMM, Artillian 42" Forks and Modular Grapple, I-Match, Ballast Box, and lots of other STUFF.
    -John Deere 455 w/60" MMM


    Bolt on Grab Hooks and other cool stuff are now for sale!!

    Visit our YouTube Channel

    My Equipment:
    John Deere 3720 Deluxe Cab, 300cx FEL, 366 Front Blade, 59" Front Snowblower, Ballast Box
    Artillian 3K Forks, Grapple, Front-Hoe Bucket
    John Deere 455, 60" MMM

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    Ok. Going to wait until snow season is over and then we’ll investigate. I’ll report back what I find.

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    leak

    no sealent ...... rubber o rings ....#3...... bout $.50 ea. all jd hyd hoses and fittings use o rings don't overtighten ...good luck

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    jgayman's Avatar
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    Quote Originally Posted by teddyg1 View Post
    no sealent ...... rubber o rings ....#3...... bout $.50 ea. all jd hyd hoses and fittings use o rings don't overtighten ...good luck
    The #2 elbow and #16 elbow are different fittings with different part numbers. #16 does not appear to have the same separate O-ring as #2 ($1.37).
    2012 2720 -- 200CX Loader -- 54" Quick Attach Snow Blower -- Frontier LR5060 Rake -- Land Pride RB1660 Blade (Hydraulic Angle) -- Artillian 42" Forks -- Ken's Bolt on Grab Hooks -- Fit Rite Hydraulic top-link -- 2013 X500 for mowing duties

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    Took it apart today after removing the snowblower. #16 elbow has o-rings on each end. Replaced one that matched #3 on the connection between #15 and #16. No more leaks in testing.

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