Page 2 of 9 FirstFirst 12345 ... LastLast
Results 11 to 20 of 89
  1. #11
    Platinum Member 3v0's Avatar
    Join Date
    Jan 2013
    Posts
    520
    Location
    Oklahoma Pan Handle, United States
    Tractor
    Kubota BX2200

    Default Re: Catastrophic Failure

    How many hours are on the L2900GST ?

  2. #12
    Elite Member Coyote machine's Avatar
    Join Date
    May 2009
    Posts
    4,658
    Location
    Southern VT
    Tractor
    '10 Kioti DK 40se/hst KL-401 FEL, loaded tires, KB-2485 bhoe, Tuffline TB160 boxblade, Woods QA forks, MIE Hydraulic bhoe thumb & ripper tooth, Igland 4001 winch, & GR-20 Log Grapple. Woods BBX72" Mower. Diamondplate aluminum canopy.

    Default Re: Catastrophic Failure

    To the OP: does anything come to mind that could explain why the problem occurred, that might go back some time beyond recent use, where the tractor was being strained in any way?
    Anything having to do with use of the 3PH or any heavy load condition that could have led to the failure over time?

    Who is Carl?
    And forget about buying American- there's virtually nothing made here anymore, and what if there were...nothing made in America has ever broken?
    2010 DK-40se/hst, Kioti KL-401 FEL, (reversible Kioti cutting edge), 72" Ratchet Rake. Fit Rite Top-N-Tilt hydraulics & diverter valve. HLA Series 2000 7' snowplow, Aquiline MPC rear chains. Samuri Sickle bar.

    Scag Wildcat: Kawasaki 26HP, with bagger. Dr. brush mower, & 42" lawn deck, Dr. self propelled, 6.5HP Trimmer mower. Pro-Mow 3 gang mower, no HP.

    Bunch of STIHL chainsaws: 011x 2, MS192T, MS200T, MS180C, MS230, MS270 (Wood Boss), 038 Farmboss, '86 anniversary edition.

  3. #13
    Elite Member Don87's Avatar
    Join Date
    May 2010
    Posts
    4,226
    Location
    SW Pa.
    Tractor
    Massey Ferguson GC2400

    Default Re: Catastrophic Failure

    Quote Originally Posted by Coyote machine View Post
    To the OP: does anything come to mind that could explain why the problem occurred, that might go back some time beyond recent use, where the tractor was being strained in any way?
    Anything having to do with use of the 3PH or any heavy load condition that could have led to the failure over time?

    Who is Carl? And forget about buying American- there's virtually nothing made here anymore, and what if there were...nothing made in America has ever broken?
    http://www.tractorbynet.com/forums/j...out-pulls.html
    Don

    MF GC2400, FEL, 60in.MMM, 5ft. Cultivator, Single Bottom Plow, Bush Hog RTC48 tiller, MF 2360 front mount snowblower, 5ft backblade. BXpanded Piranha toothbar.

  4. #14
    Platinum Member PitbullMidwest's Avatar
    Join Date
    Sep 2001
    Posts
    944
    Location
    SE Iowa
    Tractor
    1998 Kubota L2900GST

    Default Re: Catastrophic Failure

    Quote Originally Posted by 3v0 View Post
    How many hours are on the L2900GST ?
    1400+
    Curt
    "No man, having put his hand to the plow, and looking back, is fit for the Kingdom of God" - Luke 9:62

  5. #15
    Platinum Member PitbullMidwest's Avatar
    Join Date
    Sep 2001
    Posts
    944
    Location
    SE Iowa
    Tractor
    1998 Kubota L2900GST

    Default Re: Catastrophic Failure

    Quote Originally Posted by Coyote machine View Post
    To the OP: does anything come to mind that could explain why the problem occurred, that might go back some time beyond recent use, where the tractor was being strained in any way?
    Anything having to do with use of the 3PH or any heavy load condition that could have led to the failure over time?
    Nothing comes to mind, I drag a 5' box or 5' grade blade behind it and brush cut but nothing outside normal or intended 3pt use. But the cylinder assembly controls all things hydraulic, so repeated use of the FEL to push, lift and compact (down pressure) the burn pile may have lead to a failure over time, but again nothing outside of what I would say is normal, intended use of a FEL. I will say though that every time I've ever exceded the load limit the bypass relief valve has kicked in.
    Curt
    "No man, having put his hand to the plow, and looking back, is fit for the Kingdom of God" - Luke 9:62

  6. #16
    Elite Member Don87's Avatar
    Join Date
    May 2010
    Posts
    4,226
    Location
    SW Pa.
    Tractor
    Massey Ferguson GC2400

    Default Re: Catastrophic Failure

    Quote Originally Posted by PitbullMidwest View Post
    Nothing comes to mind, I drag a 5' box or 5' grade blade behind it and brush cut but nothing outside normal or intended 3pt use. But the cylinder assembly controls all things hydraulic, so repeated use of the FEL to push, lift and compact (down pressure) the burn pile may have lead to a failure over time, but again nothing outside of what I would say is normal, intended use of a FEL. I will say though that every time I've ever exceded the load limit the bypass relief valve has kicked in.
    Everything is pointing to the relief valve.
    Don

    MF GC2400, FEL, 60in.MMM, 5ft. Cultivator, Single Bottom Plow, Bush Hog RTC48 tiller, MF 2360 front mount snowblower, 5ft backblade. BXpanded Piranha toothbar.

  7. #17
    Veteran Member brain55's Avatar
    Join Date
    Jan 2008
    Posts
    1,626
    Location
    Brentwood, CA

    Default

    Quote Originally Posted by Don87 View Post
    Everything is pointing to the relief valve.
    Just to be clear, not the system relief but the safety relief. You had said it was 4 degrees out I believe, the oil in the 3-pt is static if you aren't using it. If the 3-pt was raised all of the way up there is only so much thermal expansion that can happen in the cylinder before the mechanism bottoms out. Once that happens if enough thermal expansion happens and the safety relief doesn't let out that pressure build up stuff breaks. I'm only guessing without seeing pictures and I probably wouldn't have come to this conclusion if he hadn't mentioned they were pushing stuff into the burn pile. I'm thinking there was enough temperature swing in the static cylinder to cause the problem.

    Brian

  8. #18
    Veteran Member
    Join Date
    Dec 2000
    Posts
    1,696
    Location
    Southern VT, Southern ME
    Tractor
    John Deere 4100 HST /410 FEL, R4s

    Default Re: Catastrophic Failure

    Im sure differnt manufactures use different setups but on my system there is only the one rockshaft mounted system pressure relief valve to control ALL hydraulic system pressure from the loader 3point, and my aux pb circuit. It consist of a valve seat, needle valve, spring assembly and is adjusted by a threaded screw pressure on the spring follower. Internally the rockshaft control valve has several check ball spring that close off and open hydraulic flow to sump when the rockshaft lever is activated. Even if one of those circuits failed the system relief would be there unless the spring failed or the needle got stuck somehow and wouldnt lift I've often heard of reliefs being held open usually by a floating chip of metal in the system fluid but never the opposite. Not that it couldnt happen I guess. I hope the hyd pump didnt get damaged.

  9. #19
    Veteran Member brain55's Avatar
    Join Date
    Jan 2008
    Posts
    1,626
    Location
    Brentwood, CA

    Default

    Once the 3-pt cylinder has lifted the rockshaft to the desired position the control valve shuts off the flow of oil to the cylinder. The hydraulic pump and the relief valve are no longer involved. The only way fluid is let out of the cylinder at that point is by moving the control lever or by internal leakage. If the control linkage is properly adjusted, and you raise the control lever to the full up position, you should manually still be able to lift the lift arms a couple more inches, this gives you room for the thermal expansion. If the linkage is not properly adjust or somebody adjusts it to get that last little bit of implement lift you don't have room for that expansion. It is possible too that there is no safety relief on that machine and they rely on proper linkage adjustment.

    Brian

  10. #20
    Veteran Member
    Join Date
    Dec 2000
    Posts
    1,696
    Location
    Southern VT, Southern ME
    Tractor
    John Deere 4100 HST /410 FEL, R4s

    Default Re: Catastrophic Failure

    Right. Op said they started the tractor. So the scenario on my machine would be the pump would be pumping and with nothing moving (rockshaft or loader) the oil should just be being relieved to sump by the rockshaft control valve check ball and if that didnt happen the system relief should lift and if it didnt kaboom.

Page 2 of 9 FirstFirst 12345 ... LastLast

Similar Threads

  1. JD4300 -- Catastrophic Failure of the Shift Shaft
    By reasley in forum John Deere Owning/Operating
    Replies: 75
    Last Post: 04-28-2014, 05:40 PM
  2. Catastrophic failure: Berta rotary plow
    By clytle374 in forum 2-Wheeled Tractors
    Replies: 19
    Last Post: 02-26-2013, 09:42 AM
  3. Catastrophic hydraulic top link failure
    By pclausen in forum Attachments
    Replies: 75
    Last Post: 01-07-2013, 12:35 AM
  4. Catastrophic failure 3 weeks after warranty expired
    By airbusdriver in forum Bobcat Tractors
    Replies: 6
    Last Post: 09-22-2012, 03:55 PM
  5. Hydraulics failure...
    By corelokt308win in forum Iseki
    Replies: 7
    Last Post: 08-09-2005, 04:57 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2014 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.