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  1. #1
    New Member
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    May 2008
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    10

    Default John Deere 755 Hydraulic problems

    I have a 1987 JD 755 4x4 Hydrostatic with FEL. The FEL slowly stopped lifting as did the three point lower links and the power steering failed at the same time. Does anyone know what this could be?

  2. #2
    Gold Member
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    Feb 2008
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    262

    Default Re: John Deere 755 Hydraulic problems

    Looks like your hydraulic pump went bad. You should get a guage and check the output pressure.

  3. #3
    Veteran Member crashz's Avatar
    Join Date
    May 2005
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    1,004
    Location
    Eastern MA & Upstate NY
    Tractor
    John Deere 770, Bobcat 753

    Default Re: John Deere 755 Hydraulic problems

    I think your 755 is similar to my 770 in that it has both a power steering and an implement hydraulic pump. So the chances of both failing simutaneously is slim. And with any mechanically problem, look at the simple and cheap options first. My guess is that the pumps, which I think use a common suction, are restricted due to a blockage on the suction side. Not sure about the 755, but the 770 and 790 have a suction screen (often found clogged with "stuff") as well as a spin on filter. To access the screen, you must drain the transmission/rear axle/common sump.

    I'm pretty sure that if you drain the fluid, clean the screen, replace the spin on filter and replace the fluid with new clean tractor fluid (the JD stuff is good and fairly reasonable) you will find that the machine is back to normal. If the HST has a filter or screen, it should also be cleaned or replaced.
    I've had a wonderful evening, but this wasn't it. ~ Groucho Marx

  4. #4
    Gold Member yankeerider's Avatar
    Join Date
    May 2007
    Posts
    450
    Location
    North Central Connecticut
    Tractor
    Deere 755

    Default Re: John Deere 755 Hydraulic problems

    I'm quite confident just one hydraulic pump on the 755, but that doesn't necessarily mean the pump went south. Attached is list of "things to check" on this model tractor.
    Attached Thumbnails Attached Thumbnails John Deere 755 Hydraulic problems-755nohydraulics.jpg  
    Jerry

    JD 755 w/70 loader, 60" MMM, DR 3pt chipper, Woods RB60 blade, 48" KKII tiller, 8 hp tow behind Giant Vac
    Gator HPX 4x4 Gas,Cat 303c CR mini-ex

  5. #5
    New Member
    Join Date
    Feb 2013
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    1
    Location
    efferson maine
    Tractor
    jd755

    Default Re: John Deere 755 Hydraulic problems

    does anybody know if the jJD755 has a screen in the hydraulics and if so where it is

  6. #6
    DFB
    DFB is offline
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    Dec 2000
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    1,657
    Location
    Southern VT, Southern ME
    Tractor
    John Deere 4100 HST /410 FEL, R4s

    Default Re: John Deere 755 Hydraulic problems

    John Deere - Parts Catalog
    Attached Thumbnails Attached Thumbnails John Deere 755 Hydraulic problems-mp4716_________un01jan94.gif  

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