Interesting 1025R/H120 hydraulics finding...
Results 1 to 7 of 7
Like Tree2Likes
  • 1 Post By dieselshadow
  • 1 Post By tsdunay

Thread: Interesting 1025R/H120 hydraulics finding...

  1. Top | #1

    Join Date
    Nov 2013
    Last Online
    08-20-2019 @ 08:51 PM
    Location
    Upstate NY
    Posts
    19
    Thanks
    2
    Thanked 6 Times in 5 Posts

    Interesting 1025R/H120 hydraulics finding...

    After I had removed the bucket from my 1025R yesterday I noticed that the two sides of the JDQA were not even so I attempted to move one of them by hand and noticed that, not only are they easily manipulated with little pressure but also that the opposite side responds in an alternate fashion to the pressure on the other. Another way, if I push the top of one link toward the tractor, the other link moves in the opposite direction. I've linked to a video at the bottom to get a better idea of what I mean.

    I guess I am curious if A) this is normal behavior or B) this may be associated with the FBS/DBS symptoms a lot of guys are having? (thinking fluid moving past a valve it shouldn't be) I've only owned my machine for a month and used it only moving snow so far. I have noticed that there is a lot of play in the bucket, but haven't lifted anything heavy enough to note the drop when curling the bucket.

    Would any of you guys that have had the SCV replaced have a moment next time you are working with your machine to take the bucket off and see if the behavior on your machine is similar or different?

    I had the machine warmed up and about 1/4 throttle when doing this I believe.
    1025R hydraulics HD - YouTube

  2. Remove Advertisements
    GreenTractorTalk.com
    Advertisements
     

  3. Top | #2
    56FordGuy's Avatar
    Join Date
    Jan 2012
    Last Online
    Yesterday @ 09:20 PM
    Location
    Wyoming
    Posts
    10,043
    Thanks
    482
    Thanked 1,661 Times in 1,091 Posts
    That's normal. The tilt cylinders are plumbed together, so when you push one cylinder in, that fluid pushes the other cylinder out.
    -Blake

    Your mileage may vary.

    JD 6410
    Some other stuff

    YouTube- Life in Wyoming

  4. Top | #3
    Keeper of the GTT Cookies dieselshadow's Avatar
    Join Date
    Nov 2011
    Last Online
    Today @ 05:49 AM
    Location
    Joelton TN
    Posts
    19,933
    Thanks
    1,067
    Thanked 4,329 Times in 2,601 Posts

    Interesting 1025R/H120 hydraulics finding...

    Quote Originally Posted by 56FordGuy View Post
    That's normal. The tilt cylinders are plumbed together, so when you push one cylinder in, that fluid pushes the other cylinder out.
    Yup. Totally normal. If you look at the base of your JDQA shoes, you'll see horizontal timing rod that connects the base of the two shoes but allows a bit of slop for easy connecting of your attachment. If your shoes move to the opposite extremes, you may be missing a pin in your timing rod.
    Last edited by dieselshadow; 03-02-2014 at 10:23 AM.
    Gizmo2 likes this.
    - Jason

    GreenTractorTalk.com Rules, Policies, and Terms of Use

    Subscribe to dieselshadowman on YouTube

    2720 w/ 200CX FEL
    , Ken's weld-on hooks, Fit Rite Hydraulics Top and Tilt kit, Artillian forks.
    1954 60 - getting full restoration, 1964
    110 round fender in the shop for crustoration
    Ferris IS3200Zzero turn mower

    Quote Originally Posted by Gizmo2 View Post
    Dieselshadow is my Hero.


  5. Remove Advertisements
    GreenTractorTalk.com
    Advertisements
     

  6. Top | #4

    Join Date
    Aug 2011
    Last Online
    05-03-2019 @ 02:38 PM
    Location
    Crozet VA
    Posts
    160
    Thanks
    19
    Thanked 34 Times in 27 Posts
    I think what you are seeing is explained by the fact that the two cylinders are connected off the two arms of T's. One line comes from the valve, through the disconnects, then to a T, and then off each arm of the T sits one side of the cylinders (one on each side of the FEL). The other side of the cylinders gets run back through an identical setup all the way back to the other output from the valve.

    If you are making the piston shorter on one side, then that pushes fluid out of the cylinder and it goes through the T to the other cylinder and tries to make that piston longer. The other side of the cylinder you are making shorter is sucking fluid, which also comes thru the T and has about the same effect.

    I hope this explains the mechanics, but that is expected behavior from two actuators T'd together. The Floppy bucket implies either air in the lines or leakage across the valve. I tried disconnecting the QDs one time to see if that helped and it didn't, so I think the problem is air in the system. How it gets in there is a question for others much wiser in the ways of hydro than I.

    - Hunter
    1026R TLB (53", Artillian diverter, Ken's Hooks), 260BH (thumb, step), 60D MMM, rear blade, box blade, landscape rake, land plane, tiller, aerator, Artillian forks, 50" wicked grapple
    IS700z (27HP B&S commercial, 61” deck)

  7. Top | #5

    Join Date
    Nov 2013
    Last Online
    08-20-2019 @ 08:51 PM
    Location
    Upstate NY
    Posts
    19
    Thanks
    2
    Thanked 6 Times in 5 Posts
    Sounds like I have nothing to be concerned about. I appreciate the feedback. Love this forum.

  8. Top | #6
    Captain Hook Kennyd's Avatar
    Join Date
    Aug 2010
    Last Online
    Today @ 05:55 AM
    Location
    Westminster, MD
    Posts
    16,442
    Thanks
    5,064
    Thanked 4,085 Times in 2,550 Posts
    Quote Originally Posted by mdnyrx View Post
    Sounds like I have nothing to be concerned about. I appreciate the feedback. Love this forum.
    Hey, don't listen to those screwballs, your machine is totally messed up and should be given to me ASAP to fix or it might blow up and kill little children and small pets!






































    (Just kidding, perfectly normal as stated since the cylinders are plumbed in parallel.)
    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

  9. The Following 2 Users Say Thank You to Kennyd For This Useful Post:

    fuelhog2000 (03-02-2014), moontree (03-02-2014)

  10. Top | #7

    Join Date
    Jul 2013
    Last Online
    11-24-2018 @ 06:13 AM
    Location
    Belle Vernon, Pa
    Posts
    70
    Thanks
    0
    Thanked 2 Times in 2 Posts
    Quote Originally Posted by Kennyd View Post
    Hey, don't listen to those screwballs, your machine is totally messed up and should be given to me ASAP to fix or it might blow up and kill little children and small pets!
    This is why i love this forum so much... So much diversity.
    Kennyd likes this.
    -Tom

    2013 1025R FILB w/ 60D MMM w/independent lift

    Ohio Steel 920 lb. Steel Lawn Roller, 24 in. x 52 in.

    Troy-Bilt 27-Ton Gas Log Splitter

    Troy-Bilt 250cc Chromium Gas Wood Chipper


  11. Remove Advertisements
    GreenTractorTalk.com
    Advertisements
     

Similar Threads

  1. 1025r & H120 Lift Capacity - Underrated?
    By psrumors in forum Sub Compact Utility Tractors (SCUT)
    Replies: 13
    Last Post: 08-03-2017, 10:26 AM
  2. H120 hydraulic hose routing on 1025R
    By tk1025 in forum Sub Compact Utility Tractors (SCUT)
    Replies: 35
    Last Post: 11-02-2014, 08:56 PM
  3. H120 loader hydraulics question
    By rockshaft in forum Sub Compact Utility Tractors (SCUT)
    Replies: 12
    Last Post: 09-25-2013, 12:07 PM
  4. 1025R with H120, 54" Snow Blower and 60" MMM Hydraulic lift auto connect?
    By prosper in forum Sub Compact Utility Tractors (SCUT)
    Replies: 3
    Last Post: 08-31-2013, 08:11 PM
  5. Hydraulics issue with 1026R H120 FEL
    By Dirtrod in forum Sub Compact Utility Tractors (SCUT)
    Replies: 86
    Last Post: 07-15-2013, 11:06 AM

Bookmarks

Posting Permissions

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