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  1. #1
    New Member
    Join Date
    Jul 2012
    Cusick, WA
    Ford 4500 Tractor/Loader/Backhoe

    Default Why are both of my swing cylinders extending when I try to swing either left or right

    This is on a Ford 4500 T/L/Backhoe

  2. #2
    Veteran Member MikeInEburg's Avatar
    Join Date
    Feb 2008
    Emmitsburg, MD
    Kubota B7800


    Something is plumbed incorrectly. When swinging, one cylinder should extend and the other retract. Is it possible that hose connections were changed?

    "As you go through life, make this your goal: watch the donut, not the hole"

    Kubota B7800
    BH-75A Backhoe
    Rhino 60'' finish mower

  3. #3
    Super Star Member J_J's Avatar
    Join Date
    Sep 2003
    Power-Trac 1445, KUBOTA B-9200HST

    Default Re: Why are both of my swing cylinders extending when I try to swing either left or r

    Are you saying that the BH can't swing now as both cyl are extending?

    What was the last fix you did to the BH?

    Did you loan it out to someone?

    Did you put a gage on either or both cyl?

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

    Git er done.

  4. #4
    Veteran Member
    Join Date
    Apr 2006
    western NC
    Ventrac, Steiner

    Default Re: Why are both of my swing cylinders extending when I try to swing either left or r

    If nothing has changed in the plumbing, One cylinder could be bad allowing the oil to bypass internally.

  5. #5
    Join Date
    Jan 2012
    Ford 3930 Allis Chalmers B

    Default Re: Why are both of my swing cylinders extending when I try to swing either left or r

    Quote Originally Posted by 4500hoe View Post
    This is on a Ford 4500 T/L/Backhoe
    I've owned a couple of the good old Ford 4500 rigs and they do things a little different on the swing system hydraulics. Both swing cylinders are set up to PULL on the end of chain that fits around the base of the swing pin.They are single acting cylinders with two hoses going to each one. One hose connects to the swing valve and feeds pressure to PULL [or retract ] Now the other smaller hose connects BOTH cylinders together . Ford didn't just put a vent on each like other peoples SINGLE acting cylinders , NO . So what happens is the cylinder get worn and start passing oil to each other. Usually the little hose breaks or leaks enough so things keep swinging. Disconnect the small hose and get ready to catch some oil as you operate ...or remove and rebuild [probably both } cylinders. You can sit down the bucket, set down the outriggers and block up under the backhoe, disconnect the big nuts on each side of the seat . Use the outriggers and down pressure on the boom to lift the hoe up a little off the lower pins . CAREFULLY and slowly drive forward while watching the tractor to backhoe hoses . Stop before you break a hose and you should have room to remove the swing cylinders from the chain and rebuild them. A shop manual can probably be found on ebay and explain it better. Sorry for such a long post. Be careful, its all heavy !!!
    Ford 3930 FEL,Gill roll over scraper,Hankbilt pulveriser, 3pt fold over disk,PH auger, Hankbilt 3pt log splitter,blade,6"bushog,plow,boompole, Hankbilt subsoiler,72" ratchetrake 1949 Allis Chalmers B [ Its earned its retirement and goes to parades/shows when its owner has time/energy ] Growing old ain't for sissies !

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