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  1. #1
    New Member
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    Jul 2012
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    7
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    Matheson Ontario
    Tractor
    John Deere 1120

    Default John Deere 1120 hydraulic oil type and how to check

    I have recently purchased a John Deere 1120. I have no operators or service manual. I believe all hydraulics e.g. steering, the loader and the rear lifts are all operated from the trany/diff oil. The dip stick is located on the right side below the seat. It has a red coloured oil that looks like car oil.
    My questions are
    1. I'am i right on what the hydraulics run?
    2. What is the right type of oil. Is Universal tractor fluild (TDH) good oil for the hydraulics on this unit?
    3. The unit has a "park" on the transmission - so do you check the hydraulic oil cold or with the engine running?

    Thanks.

    Gordk

  2. #2
    Elite Member Tx Jim's Avatar
    Join Date
    Jan 2007
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    4,300
    Location
    Coyote Flats,Tx
    Tractor
    JD 4255/Kubota M7040 HDC

    Default Re: John Deere 1120 hydraulic oil type and how to check

    JD Hy-Gard or it's equivalent hyd oil which isn't red in color. Yes you are correct in that the dipstick you referred to takes care of ALL the oil levels except the engine. Check hyd oil with engine running.

  3. #3
    New Member
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    Jul 2012
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    7
    Location
    Matheson Ontario
    Tractor
    John Deere 1120

    Default Re: John Deere 1120 hydraulic oil type and how to check

    Thank you very much. This has been very helpful.

  4. #4
    Veteran Member
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    Apr 2004
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    2,102
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    East Coast of Lake Huron
    Tractor
    Deere, several

    Default Re: John Deere 1120 hydraulic oil type and how to check

    1-800-522-7448 for the manuals

  5. #5
    Elite Member Tx Jim's Avatar
    Join Date
    Jan 2007
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    4,300
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    Coyote Flats,Tx
    Tractor
    JD 4255/Kubota M7040 HDC

    Default Re: John Deere 1120 hydraulic oil type and how to check

    buickanddeere
    I'll bet that anyone that can boot up a computer can find JD's well published 800 phone #.

  6. #6
    Elite Member Zebrafive's Avatar
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    Aug 2010
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    2,922
    Location
    South West MI
    Tractor
    John Deere 2030, John Deere 6415

    Default Re: John Deere 1120 hydraulic oil type and how to check

    Not mentioned is you check the trans/hydraulic oil by setting the dip stick back on the tube, but do not screw it back on.
    Since the oil is red and reccommended oil is not, I would change it then you know what you have. Also change the filter and clean the screen.
    John Deere 2030 JD 245SL Loader
    John Deere 6415 mfwd JD 640SL Loader

  7. #7
    New Member
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    Jul 2012
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    7
    Location
    Matheson Ontario
    Tractor
    John Deere 1120

    Default Re: John Deere 1120 hydraulic oil type and how to check

    Thank you very much. I have changed the oil and filter and tested the tractor (hauled out some large logs and place for a mill to come in today. The tractor is oil and smokes a bit but starts , runs and has good hydraulics. So far so good.

    Gordk

  8. #8
    New Member
    Join Date
    Jul 2012
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    7
    Location
    Matheson Ontario
    Tractor
    John Deere 1120

    Default Re: John Deere 1120 hydraulic oil type and how to check

    Thank you. Appreciate your response.

  9. #9
    New Member
    Join Date
    Jul 2012
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    7
    Location
    Matheson Ontario
    Tractor
    John Deere 1120

    Default Re: John Deere 1120 hydraulic oil type and how to check

    Thank you. Your response was useful and appreciated.

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