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  1. #1
    Silver Member Bday's Avatar
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    Dec 2012
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    197
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    Lucerne, IN
    Tractor
    53' Allis WD, 54' Allis WD 45, 52' allis CA, Farmall 560, 656 , 47' Deere model A , 38' Deere model A

    Default Hydraulics on Farmall 656

    Just put a loader on my 656. The rams up work fine, but coming down they jerk a little. The system makes a chattering noise. One guy told me it could be a weak spring inside one of the couplers. He said if the loader stayed at the hold position in float. Then the problem most likely was a coupler. Make any sense? Or should I start digging deeper?
    Thanks , Brett

  2. #2
    Super Star Member J_J's Avatar
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    JACKSONVILLE, FL
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    Power-Trac 1445, KUBOTA B-9200HST

    Default Re: Hydraulics on Farmall 656

    Switch the hoses from the bucket for a test.

    Just reseating may help.
    J.J.

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

    Git er done.

  3. #3
    Silver Member Bday's Avatar
    Join Date
    Dec 2012
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    197
    Location
    Lucerne, IN
    Tractor
    53' Allis WD, 54' Allis WD 45, 52' allis CA, Farmall 560, 656 , 47' Deere model A , 38' Deere model A

    Default Re: Hydraulics on Farmall 656

    Quote Originally Posted by J_J View Post
    Switch the hoses from the bucket for a test.

    Just reseating may help.
    Hi JJ,
    We switched outlets and still come up with same issue.

  4. #4
    Super Star Member J_J's Avatar
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    JACKSONVILLE, FL
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    Power-Trac 1445, KUBOTA B-9200HST

    Default Re: Hydraulics on Farmall 656

    Another test to see if the valve is passing fluid.

    Remove the QD's from the lift hoses and place in a bucket and see if there is flow from fwd and rev lever position .

    Did the relief valve ever activate?
    J.J.

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

    Git er done.

  5. #5
    Silver Member Bday's Avatar
    Join Date
    Dec 2012
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    197
    Location
    Lucerne, IN
    Tractor
    53' Allis WD, 54' Allis WD 45, 52' allis CA, Farmall 560, 656 , 47' Deere model A , 38' Deere model A

    Default Re: Hydraulics on Farmall 656

    Quote Originally Posted by J_J View Post
    Another test to see if the valve is passing fluid.

    Remove the QD's from the lift hoses and place in a bucket and see if there is flow from fwd and rev lever position .

    Did the relief valve ever activate?
    Not sure what you mean about relief valve activation. The loader jerks when dropping from raised position. We have down pressure to lift front end of tractor. Chattering noise comes when loader is lowered down. Since we switched outlets do you think it's in the loader?

  6. #6
    Super Star Member J_J's Avatar
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    JACKSONVILLE, FL
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    Power-Trac 1445, KUBOTA B-9200HST

    Default Re: Hydraulics on Farmall 656

    Have you checked fluid level, or cleaned any screens or replaced filters .

    Are there any air bubbles in the fluid? If so, could be suction leak.

    The relief valve will activate when you have enough fluid and blockage to over pressure the relief valve.

    Does your valve have load checks. If so, remove, inspect and clean if needed.

    Install a 3000 psi pressure gage to the IN port of FEL valve and use it to monitor and trouble shoot the hyd system.

    Erratic pressure is an indication of air in system, and also low fluid level..
    Last edited by J_J; 12-25-2012 at 10:37 AM.
    J.J.

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

    Git er done.

  7. #7
    Elite Member
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    Jan 2010
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    3,126
    Location
    Northern, IL
    Tractor
    Branson 2400H, JD X540

    Default Re: Hydraulics on Farmall 656

    A couple of questions:
    Does it drop smoothly in float?
    Does the loader chatter coming down slowly when empty?
    Does the loader chatter worse when moving faster?
    Does putting a load in the bucket make a difference?
    Have you tried swapping the hoses on the lift function only? I.e. switch the raise and lower hoses. Does the problem still occur?
    Does the same thing happen when to bucket dump when you have a load in the bucket and dump it?

    Typically bad QD's don't chatter, they just totally stop all movement.

    Are you using the valves on the tractor or is their a seperate valve for running the loader.

    The fact that it raises fine would indicate the pump is functioning properly.

    Jerky lowering sounds like either a mechanical bind or some form of pilot operated load device in your system. Not at all familiar with the IH 656 hydraulics so not sure what features they have.
    Artificial Intelligence will never overcome natural stupidity.

    Branson 2400H MMM & FEL

    JD X540

  8. #8
    Super Member RickB's Avatar
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    Eastern NY
    Tractor
    Case 885, Ford 4000

    Default Re: Hydraulics on Farmall 656

    The loader is dropping faster than your tractor's hydraulics can supply oil to the rod end of the lift cylinders. Adding an adjustable one-way restrictor to the lift cylinder's base end hose between the tee and QD male tip can help. Limit the return flow to the point where the cavitation is eliminated. A one way restrictor will not slow the lift function.
    We have too much gun control.
    What we need is more idiot control.

  9. #9
    Silver Member Bday's Avatar
    Join Date
    Dec 2012
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    197
    Location
    Lucerne, IN
    Tractor
    53' Allis WD, 54' Allis WD 45, 52' allis CA, Farmall 560, 656 , 47' Deere model A , 38' Deere model A

    Default Re: Hydraulics on Farmall 656

    Quote Originally Posted by oldnslo View Post
    A couple of questions:
    Does it drop smoothly in float?
    Does the loader chatter coming down slowly when empty?
    Does the loader chatter worse when moving faster?
    Does putting a load in the bucket make a difference?
    Have you tried swapping the hoses on the lift function only? I.e. switch the raise and lower hoses. Does the problem still occur?
    Does the same thing happen when to bucket dump when you have a load in the bucket and dump it?

    Typically bad QD's don't chatter, they just totally stop all movement.

    Are you using the valves on the tractor or is their a seperate valve for running the loader.

    The fact that it raises fine would indicate the pump is functioning properly.

    Jerky lowering sounds like either a mechanical bind or some form of pilot operated load device in your system. Not at all familiar with the IH 656 hydraulics so not sure what features they have.
    The loader drops slowly, smoothly if you ease the lever forward. If you push the lever too far forward the down action stops. Then use ease it back and it starts the jerky down motion. We did switch remotes same problem. It does it also when tractor is off and you drop loader to relieve pressure.

  10. #10
    Super Star Member J_J's Avatar
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    JACKSONVILLE, FL
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    Power-Trac 1445, KUBOTA B-9200HST

    Default Re: Hydraulics on Farmall 656

    In float position full fwd, the ports on that spool are all open to tank.

    If the lift arms stop lowering when you go to float, then the spool is not working like it is supposed to.

    Remove the end cap on the the float spool and inspect and clean the float assembly parts. Check the spring center parts also.

    All the float parts do is to keep the spool in a locked position, so all ports are open to tank, and the bucket follows the ground contour.
    J.J.

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

    Git er done.

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