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  1. #1
    Member
    Join Date
    Jan 2012
    Posts
    42
    Location
    West Ontario
    Tractor
    Kubota L2900/ Zetor 8011/ Kubota KX41Excavator

    Default Hydraulics frozen?

    I have a kubota L2900 with a LA480 Front End Loader. The FEL usaly works fine.
    Now with the freezing weather the stick does not move to the up or down position for the arms. The bucket curls up and down fine. After running the tractor for half an hour the FEL works again.
    There are 2 steel cables from the stick to the valve block. They seem not to be stuck.

    Does anyone have a solution? Thanks.

  2. #2
    Veteran Member SSdoxie's Avatar
    Join Date
    Jun 2010
    Posts
    1,911
    Location
    Cumberland Plateau, TN
    Tractor
    Bobcat CT225

    Default Re: Hydraulics frozen?

    Suspect there is moisture in the float detent cap. You described the typical sympton of this. You can somtimes clear this out wiithout taking the cap off the spool by drilling a small hole low in the end of the cap, spray some deicer in there let drain then push grease in the hole.
    If you have to take the cap off to clean it, be very careful not to loose the small steel balls and springs that will likely fall out.
    Dennis

    CT225 w/7TL QA FEL, 60"tooth dirt bucket, 68" smooth bucket, Pallet Forks, Bale Spear. Hydrualic top llin, QH, 48 RC, 60" tiller, Angle blade, Landscape rake, Carry-all, Post hole auger.

  3. #3
    teg
    teg is offline
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    Default Re: Hydraulics frozen?

    Quote Originally Posted by BertZegers View Post
    ...There are 2 steel cables from the stick to the valve block...
    Do you have a photo of this area? So the FEL stick is not directly connected to the valve?

    Most of the time, what SSdoxie said... is the root cause. When the oil runs through the valve, it warms up and melts the ice. If the water can't drain anywhere, it just refreezes and you have the problem again.

  4. #4
    New Member
    Join Date
    Jul 2013
    Posts
    9
    Location
    Sellersville, PA.
    Tractor
    Kubota B2150 and John Deere 235GT

    Default Re: Hydraulics frozen?

    What is a float detent cap. Having same issues with my kubota.

  5. #5
    J_J
    J_J is offline
    Super Star Member J_J's Avatar
    Join Date
    Sep 2003
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    15,781
    Location
    JACKSONVILLE, FL
    Tractor
    Power-Trac 1445, KUBOTA B-9200HST

    Default Re: Hydraulics frozen?

    On a loader valve , there is usually two spools that have cover cans on the bottom of the valve.

    You can remove theses cans to inspect and clean and repair whatever is necessary.

    There is usually a hole in the can that should be pointed down that drains any moisture.

    After cleaning, put some waterproof grease in the can.

    If the can does not have a hole, then drill a small drain hole.
    J.J.

    When I works, I works hard. When I sits and thinks, I goes to sleep.

    Git er done.

  6. #6
    Elite Member Tx Jim's Avatar
    Join Date
    Jan 2007
    Posts
    3,715
    Location
    Coyote Flats,Tx
    Tractor
    JD 4255/Kubota M7040 HDC

    Default Re: Hydraulics frozen?

    It doesn't take much moisture in the JS control cables in freezing weather for the cables to bind. I did own an kubota M4900 that the JS loader valve cables bound up in freezing weather but thank God it doesn't normally stay below freezing much where I live.

  7. #7
    Member
    Join Date
    Apr 2008
    Posts
    49
    Location
    Western Massachusetts
    Tractor
    YM 276D

    Default Re: Hydraulics frozen?

    When I bought my YM 276 the loader valve froze in cold weather. It unfroze after warm up. I replaced the loader valve boot with a universal cv joint boot and stored the tractor under a shed. I guess moisture in the valve evaporated. The second winter no problems.

  8. #8
    Gold Member
    Join Date
    Mar 2013
    Posts
    270
    Location
    Canada Ontario
    Tractor
    1996 Kubota L4200 GSTC

    Default Re: Hydraulics frozen?

    On my old tractor, I use to "wrap" a battery warmer blanket" around the block.
    When I knew the weather was going to be extremely cold,
    I would plug it in overnight, they don't use much power and worked for me at the time.

  9. #9
    New Member
    Join Date
    Feb 2010
    Posts
    8
    Location
    Illinois
    Tractor
    Kubota L4330 HSTC, Kubota B2710, Kubota L48 TLB, Bobcat 843B

    Default Re: Hydraulics frozen?

    Hello All!

    I was facing an issue with my loader valve 'sticking' in cold weather on my kubota L4330, but I was able to find the problem and the solution. On the control cables leader from the lever in the cab to the valve block on the loader frame, I drilled a 1/64" weep hole on the lowest point of the control cable and instantly water drained out (with the tractor having been in the heated shop to thaw out before beginning work).

    I hope this post helps others to figure out what might be going on with their equipment. As for me, it's back to plowing snow!

  10. #10
    Bronze Member
    Join Date
    Sep 2012
    Posts
    82
    Location
    Lebanon, VA
    Tractor
    Long

    Default Re: Hydraulics frozen?

    Sort of along the same line I had trouble with water in the transmission/hydraulics. Drained, pure white. Put old fluid in an open topped clean 5 gallon bucket and set in old building till I could dispose of. Working on a second tractor with same problem. Drained and installed some new fluid and ran. Next day it was white again and ice was frozen at the drain plugs. The day before I got some pure water out of the bottom while it was warmer. Putting the fluid I had drained in the same building I noticed what had been in their for awhile looked like new fluid. Poured old fluid through a strainer and on the bottom of the bucket was about an inch and half of ice. Considering using this fluid for a "flush" and then installing new fluid.

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