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  1. #1
    Silver Member
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    Sep 2009
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    249
    Location
    Western KY
    Tractor
    Kubota M6800 w/1600 hrs., Case Farmall 95 w/800 hrs., Long 2510 w/1100 hrs, Cat 236B2 Skidsteer w/1000 hrs

    Default Hesston 845 Round Baler Problem

    I have a Hesston 845 baler with the hydraulic bale tension. Sometimes when I am baling the pressure will suddenly drop & the belts will slip. There doesn'r seem to be any particular time when this happens. It is just sudden & if you hit the remote lever to pressure it back up it will pressure up & may not loose pressure again for several bales or it may loose pressure in the next minute. Does anyone have any ideas what is causing this. I have rebuilt all of teh hydraulic cylinders & replaced 2 check valves on the hyd valve body.

  2. #2
    Super Star Member J_J's Avatar
    Join Date
    Sep 2003
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    16,878
    Location
    JACKSONVILLE, FL
    Tractor
    Power-Trac 1445, KUBOTA B-9200HST

    Default Re: Hesston 845 Round Baler Problem

    Speaking in general.

    If you think the cyl are good, and the cyl leaks down, I would suspect the lever center springs weak or loose. If a spool is leaking, it will probably leak all the time, or when the fluid is hot.

    If you are trying to hold a cyl, you might try adding a needle valve to shut off the flow. If the cyl still leaks, then it is the piston seals.
    J.J.

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

    Git er done.

  3. #3
    Elite Member
    Join Date
    Jan 2010
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    2,577
    Location
    Northern, IL
    Tractor
    Branson 2400H

    Default Re: Hesston 845 Round Baler Problem

    Do you have a hydraulic schematic for this baler?

    Some of these balers use a combination of valves for density control. Does yours have the option of the center being would looser then the outside of the bale? If yes possibly one of the valves during this transition is sticking.

    Other balers use a relief valve for tension control. If there is a piece of crud floating around in this valve it could also randomly jam open and cause all of the tension to be released.

    HTH

    Roy
    Artificial Intelligence will never overcome natural stupidity.

    Branson 2400H MMM & FEL

    JD 112

    BX1850 gone but not forgotten

  4. #4
    Silver Member
    Join Date
    Sep 2009
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    249
    Location
    Western KY
    Tractor
    Kubota M6800 w/1600 hrs., Case Farmall 95 w/800 hrs., Long 2510 w/1100 hrs, Cat 236B2 Skidsteer w/1000 hrs

    Default Re: Hesston 845 Round Baler Problem

    There are separate controls for the center & outside bale density. I have tried removing the check valves & flow control and letting hyd fluid flush these out. It has not helped. The one for the center bale density usually gives me the most problems.

  5. #5
    Super Member 5030's Avatar
    Join Date
    Feb 2003
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    5,047
    Location
    Michigan, S.E. Monroe County
    Tractor
    Kubota M9000 Hyd shuttle/Massey 1085

    Default Re: Hesston 845 Round Baler Problem

    Probably why I have a NH 780. The bale tension can be locked in on the balier itself.
    A couple Kubota's
    "If haying was easy, everyone would do it. It isn't."

  6. #6
    Elite Member
    Join Date
    Jan 2010
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    2,577
    Location
    Northern, IL
    Tractor
    Branson 2400H

    Default Re: Hesston 845 Round Baler Problem

    Quote Originally Posted by Timm250 View Post
    There are separate controls for the center & outside bale density. I have tried removing the check valves & flow control and letting hyd fluid flush these out. It has not helped. The one for the center bale density usually gives me the most problems.
    With dual density there has to be some form of sensor that lets the controls when to switch from inner to outer density control. Again not sure on your machine if this mechanical or electro-mechanical I.e. limit switch.

    You may want to look for and at this sensor to see if it is occasionally binding or has chaff (spelling) jaming it from time to time.

    intermittant problems are the worst to solve.

    Roy
    Artificial Intelligence will never overcome natural stupidity.

    Branson 2400H MMM & FEL

    JD 112

    BX1850 gone but not forgotten

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