Results 1 to 3 of 3
  1. #1

    Join Date
    Oct 2012
    Posts
    2
    Location
    West Virginia
    Mower
    L 120

    L120 transmission oil

    what kind of oil does the L120 take in the transmission and how much ?

  2.  

  3. #2

    Join Date
    Apr 2012
    Posts
    82
    Location
    Australia
    Mower
    JDLT155x2/JD415/Deutscher Tractors16-600hp/Farm/Earthmoving Equip

    Re: L120 transmission oil

    I understand the JD L120 uses a Tuff Torq K46 - For hydro fluid in the Tuff Torq's replace the oil with premium synthetic product, I use Mobil 1 5w50 Engine oil.

    Whilst lots of hydro tranny's are supposedly "sealed for life", it's usually quite easy to change the oil (by removing the transmission & emptying/refilling via filling via fillerneck/cap where the factory originally put the oil in - it's critical to use the correct oil & volume ).

    A simple oil change can revitalise a so called "worn" tranny if is not too late & extend its life if done as regular maintenance.

    When changing Hydro oil:-
    - clean the unit thoroughly with compressed air or wash in water/dry prior to removing any filler plugs/caps, with hydro's any dirt ingress can quickly kill the unit
    - the oil level is critical, so measure/mark & replace exactly how much you remove (there may be a fill level marked just inside the filler housing but it's not always there)
    - there may be a small filter mesh screen & possbly a small spring just inside the filler housing which can be cleaned too is it drop out.
    - take time to let the oil drain slowly to empty as much as possible
    - also take time to fill with oil to allow the oil to distribute evenly in transmision & fill slowly to minimise any air bubbles/air locks forming in the oil, & also occassionally whilst filling rotate the axles slowly by hand to distribute the oil evenly in the hydro unit
    - depending on the filler plug/cap fitment, once you replace firmly it may be prudent to use a small bead of silcon externally around plug/cap to exluded all possibility of dust ingress.

    Good luck & let us know how you get on

  4. #3

    Join Date
    Oct 2012
    Posts
    2
    Location
    West Virginia
    Mower
    L 120

    Re: L120 transmission oil

    THANKS FOR THE INFORMATION. I AM GOING TO TACKLE THIS JOB THIS AFTERNOON, SO, I'LL LET YOU KNOW HOW IT GOES.

Similar Threads

  1. JD L120 Transmission
    By cdallisons in forum John Deere Forum
    Replies: 12
    Last Post: 04-18-2013, 06:58 PM
  2. What oil to use in Hydrostatic transmission?
    By rePhil in forum Honda Forum
    Replies: 3
    Last Post: 09-05-2012, 05:41 PM
  3. motor oil in transmission oil tank
    By rorr8 in forum Small Engine & Mower Repair
    Replies: 5
    Last Post: 04-29-2012, 05:42 PM
  4. Engine 721D Transmission Oil
    By DanHunt in forum Grasshopper Forum
    Replies: 1
    Last Post: 03-21-2012, 10:33 PM
  5. L120 Lawn Mower
    By engelm9 in forum John Deere Forum
    Replies: 1
    Last Post: 07-29-2011, 02:40 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •