Sticky hydraulic valve on 955 Rockshaft
Results 1 to 9 of 9
Like Tree2Likes
  • 1 Post By Kennyd
  • 1 Post By maineuropa

Thread: Sticky hydraulic valve on 955 Rockshaft

  1. Top | #1
    maineuropa's Avatar
    Join Date
    Jan 2012
    Last Online
    Yesterday @ 06:09 AM
    Location
    Lyman, ME
    Posts
    70
    Thanks
    0
    Thanked 3 Times in 3 Posts

    Sticky hydraulic valve on 955 Rockshaft

    A while ago I posted that my rockshaft arms had lowered themselves and would not raise up. I rebuilt the Rockshaft control valve assembly...everything worked for about 4-5 months until I ran the log splitter off the rear hydraulics again...it worked briefly right after I disconnected the splitter, then shortly after would not after I moved a trailer with the rear hitch on the draw bar. I have been real busy with work so I ignored the tractor other than running it occasionally to turn/clean up the compost pile. After about 2-3 weeks of this today the rockshaft is working again(I literally had brought it into the barn for disassembly). I can only assume that there is a sticky valve (unloading, flow or lower control valve) in the system and that there must be some debris circulating. Would this assessment be correct? So I now am wondering what the next logical step should be. I think I should drain and clean the screens, replace the filter, etc before rebuilding the rockshaft or control valve assemblies?
    Rest and Be Thankful Farm
    Lyman, ME

    955 Deere, FEL, 7 Backhoe, 59 Snowblower, 72" MMM, 7 ft Enorossi sickle bar mower, New Holland 273 Baler, Mystery International hay rake, , Woods posthole digger, 7ft York Rake, Wood splitter

  2. Remove Advertisements
    GreenTractorTalk.com
    Advertisements
     

  3. Top | #2
    Captain Hook Kennyd's Avatar
    Join Date
    Aug 2010
    Last Online
    Yesterday @ 07:50 PM
    Location
    Westminster, MD
    Posts
    16,062
    Thanks
    4,911
    Thanked 3,949 Times in 2,467 Posts
    It sounds to me like you need to change your fluid, or at least do a "crackle test" on it to see if there is moisture/water in it. I suspect there is and the spools are corroding.

    Do you keep this machine outside?
    Do you use it often without it getting up to temperature? Like start is for less than 5 minutes or so?

    has15 likes this.
    Kenny

    -John Deere 3720 Deluxe Cab TLB
    FEL, MMM, Artillian 42" Forks and Modular Grapple, I-Match, Ballast Box, Trac-Vac 854 (for sale) 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

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

    dieselshadow (06-04-2012), has15 (06-04-2012)

  5. Top | #3
    Keeper of the GTT Cookies dieselshadow's Avatar
    Join Date
    Nov 2011
    Last Online
    Yesterday @ 09:21 PM
    Location
    Joelton TN
    Posts
    19,651
    Thanks
    1,063
    Thanked 4,252 Times in 2,560 Posts
    Great video Kenny! I knew you were good for something other than being a "hook"er.
    - 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

  6. Remove Advertisements
    GreenTractorTalk.com
    Advertisements
     

  7. Top | #4
    maineuropa's Avatar
    Join Date
    Jan 2012
    Last Online
    Yesterday @ 06:09 AM
    Location
    Lyman, ME
    Posts
    70
    Thanks
    0
    Thanked 3 Times in 3 Posts
    Quote Originally Posted by Kennyd View Post
    It sounds to me like you need to change your fluid, or at least do a "crackle test" on it to see if there is moisture/water in it. I suspect there is and the spools are corroding.

    Do you keep this machine outside?
    Do you use it often without it getting up to temperature? Like start is for less than 5 minutes or so?

    I keep the tractor in an unheated barn. I replaced the transmission oil yesterday and the transmission filter; also cleaned the screen. The tranny oil looked coke colored. I did notice something odd(this is a second hand tractor to me): the transmission drain plug housing has a Fernco type dual hose clamp hose connection on the take up side. Underneath the hose connection the aluminum casting drain plug has a 1 1/4 " pipe with a lip. Part of the lip was ground away* under where the hose attaches. Cannot even guess how that was achieved(my machinist neighbor/helper friend and I had fun speculating) One of the things we wondered was if there could be some air on the suction side because of this and whether that would cause some issues. At any rate we replaced the hose part and so far the tractor is fine. I liked the crackle test, but I 'll pass on using momma's best bread pan...
    Now, if it ever stops raining I will be able to start mowing again and see how the tractor really likes it T oil change.

    *If you told me it was from a chainsaw or the part had been dragged down the road, that would illustrate to you the lip condition.
    Geoff likes this.
    Rest and Be Thankful Farm
    Lyman, ME

    955 Deere, FEL, 7 Backhoe, 59 Snowblower, 72" MMM, 7 ft Enorossi sickle bar mower, New Holland 273 Baler, Mystery International hay rake, , Woods posthole digger, 7ft York Rake, Wood splitter

  8. Top | #5
    Captain Hook Kennyd's Avatar
    Join Date
    Aug 2010
    Last Online
    Yesterday @ 07:50 PM
    Location
    Westminster, MD
    Posts
    16,062
    Thanks
    4,911
    Thanked 3,949 Times in 2,467 Posts
    I think changing the fluid will go a long way to correcting your problems.
    Kenny

    -John Deere 3720 Deluxe Cab TLB
    FEL, MMM, Artillian 42" Forks and Modular Grapple, I-Match, Ballast Box, Trac-Vac 854 (for sale) 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. Top | #6
    Keeper of the GTT Cookies dieselshadow's Avatar
    Join Date
    Nov 2011
    Last Online
    Yesterday @ 09:21 PM
    Location
    Joelton TN
    Posts
    19,651
    Thanks
    1,063
    Thanked 4,252 Times in 2,560 Posts
    X2!
    - 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

  10. Top | #7
    maineuropa's Avatar
    Join Date
    Jan 2012
    Last Online
    Yesterday @ 06:09 AM
    Location
    Lyman, ME
    Posts
    70
    Thanks
    0
    Thanked 3 Times in 3 Posts

    Rockshaft droop question

    Since I am working on the 955 with another issue, I noticed this thread from a while back. We (my machinist neighbor and I ) did finally decide that the hydraulic oil level was low...I must say that trying to check the hydraulic oil on that shiny aluminum dipstick is a simple fools exercise. I am seriously considering putting some flat black paint on the dipstick...we must have checked that thing at least a dozen times and really had no idea the actual oil level. We kept adding hydraulic oil( more than a quart) and the level eventually was enough to re-activate the rockshaft, which was being hydraulic oil starved by the wood splitter. SO my take-away from this exercise is that if your rockshaft suddenly acts like it has no hydraulic oil...maybe it it actually doesn't! But don't try to determine that information from the dipstick!
    Rest and Be Thankful Farm
    Lyman, ME

    955 Deere, FEL, 7 Backhoe, 59 Snowblower, 72" MMM, 7 ft Enorossi sickle bar mower, New Holland 273 Baler, Mystery International hay rake, , Woods posthole digger, 7ft York Rake, Wood splitter

  11. Top | #8

    Join Date
    Apr 2014
    Last Online
    06-09-2015 @ 12:00 AM
    Location
    Southville, Ky
    Posts
    321
    Thanks
    14
    Thanked 55 Times in 44 Posts
    Quote Originally Posted by maineuropa View Post
    Since I am working on the 955 with another issue, I noticed this thread from a while back. We (my machinist neighbor and I ) did finally decide that the hydraulic oil level was low...I must say that trying to check the hydraulic oil on that shiny aluminum dipstick is a simple fools exercise. I am seriously considering putting some flat black paint on the dipstick...we must have checked that thing at least a dozen times and really had no idea the actual oil level. We kept adding hydraulic oil( more than a quart) and the level eventually was enough to re-activate the rockshaft, which was being hydraulic oil starved by the wood splitter. SO my take-away from this exercise is that if your rockshaft suddenly acts like it has no hydraulic oil...maybe it it actually doesn't! But don't try to determine that information from the dipstick!
    I think JD sells a red dye that you can add to your hydraulic oil to make it more visible.
    316, 332, 425, 430, 4200, 4300, 4720 w/cab, 54" front blade, 5' rear blade, 2 bottom JD plow, 4' JD tiller, 5' Woods tiller

  12. Top | #9

    Join Date
    Jan 2012
    Last Online
    03-10-2018 @ 11:32 AM
    Location
    Eastern Iowa
    Posts
    482
    Thanks
    181
    Thanked 59 Times in 50 Posts
    I use reflection from light to look for the oil. Tip the dipstick to get a reflection on the dipstick then you can see the oil level.
    Matt

    NRA Life Member

  13. Remove Advertisements
    GreenTractorTalk.com
    Advertisements
     

Similar Threads

  1. Replies: 4
    Last Post: 11-29-2012, 06:08 PM
  2. 955 hydraulic filter replacement question
    By maineuropa in forum Large Frame Compact Utility Tractors (LCUT)
    Replies: 4
    Last Post: 04-04-2012, 09:10 PM
  3. Completed rear hydraulic valve install
    By 93Mustang in forum Hydraulics
    Replies: 6
    Last Post: 12-12-2011, 07:28 PM
  4. Model 5103 John Deere Hydraulic Auxilary valve.
    By hpreacher in forum New Member Introductions
    Replies: 1
    Last Post: 10-19-2011, 06:24 PM

Tags for this Thread

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
  •