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  1. #1
    Member
    Join Date
    Sep 2009
    Posts
    30
    Location
    West Virginia
    Tractor
    1976 Economy Power King 1614

    Default Cylinder Moving In Only One Direction

    I have a Takeuchi TB016 1.6 Ton Mini Excavator that has lost the ability to raise the boom. All the other cylinders, slew motor and travel motors function properly.
    The hoses can be swapped on the boom cylinder and the cylinder will extend to raise the boom but then will not retract to lower it.
    I have the service manual, and in the Troubleshooting section it addresses no movement of the cylinder but not movement in one direction only.
    The cylinder was recently rebuilt at the local hydraulic shop, but if I can swap hoses and make it work, doesn't that eliminate the cylinder from being the problem?

  2. #2
    Super Star Member J_J's Avatar
    Join Date
    Sep 2003
    Posts
    18,402
    Location
    JACKSONVILLE, FL
    Tractor
    Power-Trac 1445, KUBOTA B-9200HST

    Default Re: Cylinder Moving In Only One Direction

    Remove the two hoses going the cyl and place in a bucket and move the valves levers to see if fluid is flowing out both hoses.
    J.J.

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

    Git er done.

  3. #3
    Silver Member
    Join Date
    Sep 2012
    Posts
    218
    Location
    hawesville
    Tractor
    600 ford

    Default Re: Cylinder Moving In Only One Direction

    Quote Originally Posted by fisherridge View Post
    I have a Takeuchi TB016 1.6 Ton Mini Excavator that has lost the ability to raise the boom. All the other cylinders, slew motor and travel motors function properly.
    The hoses can be swapped on the boom cylinder and the cylinder will extend to raise the boom but then will not retract to lower it.
    I have the service manual, and in the Troubleshooting section it addresses no movement of the cylinder but not movement in one direction only.
    The cylinder was recently rebuilt at the local hydraulic shop, but if I can swap hoses and make it work, doesn't that eliminate the cylinder from being the problem?
    try what j j said this is a way to check your control valve

  4. #4
    Super Star Member J_J's Avatar
    Join Date
    Sep 2003
    Posts
    18,402
    Location
    JACKSONVILLE, FL
    Tractor
    Power-Trac 1445, KUBOTA B-9200HST

    Default Re: Cylinder Moving In Only One Direction

    If the trouble swaps, it is not the cyl. Check them QD's for correct operation.

    You have four hoses to test any cyl.

    If the cyl will not retract, I would look for the nut that holds the piston on, has come off the rod.
    J.J.

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

    Git er done.

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