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  1. #1
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    Default Yanmar YM186 Power steering problem

    I have a YM186 power steering unit that only wants to steer to the left. Has anyone had this problem before and what would be the cause?
    By the way, this is not on a Yanmar tractor, it is on a custom garden tractor project.
    Thanks,
    Mike

  2. #2
    Platinum Member
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    Jan 2012
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    YM2000

    Default Re: Yanmar YM186 Power steering problem

    Any Pics. of it. Is the Steering shaft extended all the way forward or back ?? Usually should be in the center Forward R. Backward L.Etc.. Just A Guess

  3. #3
    Elite Member
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    yanmar 2002d

    Default Re: Yanmar YM186 Power steering problem

    May not help but the third and sixth posts in this thread has a layout of the 186 power steering set up. http://www.tractorbynet.com/forums/y...-assisted.html

  4. #4
    Veteran Member Pete Judd's Avatar
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    The Thin Gravy Ranch in The wet PNW
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    Yanmar 186d, JD 314

    Default Re: Yanmar YM186 Power steering problem

    Wow, I did not know that power steering was an option when these were sold. I just went through the 1981 printed 186/d manual, and can find no info on power steering.
    Yanmar 186D 1981
    5 foot Unknown brush hog.
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  5. #5
    Elite Member
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    yanmar 2002d

    Default Re: Yanmar YM186 Power steering problem

    Quote Originally Posted by mnoonan View Post
    I have a YM186 power steering unit that only wants to steer to the left. Has anyone had this problem before and what would be the cause?
    By the way, this is not on a Yanmar tractor, it is on a custom garden tractor project.
    Thanks,
    Mike
    Any findings on your problem?

  6. #6
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    Default Re: Yanmar YM186 Power steering problem

    Winston1,
    No findings just yet. The shuttle valve "Driver Assy" pulls out (to turn left) much easier than trying to push in (to turn right). I plan to take the whole unit to a hyd. shop to take apart and see what's wrong. It will turn to the right by exerting more force on the shuttle valve. In my earlier question, I was hoping to hear if anyone else had this problem and how they fixed it. I have attached a picture of my installation. Do you have any recommended place to get parts? Thank you, Mike.-pc181053-jpg
    Last edited by mnoonan; 01-15-2013 at 06:51 PM.

  7. #7
    Platinum Member
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    Pomfret,Connecticut
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    yanmar 336d w ldr,Cub,many attachments

    Default Re: Yanmar YM186 Power steering problem

    looks like a flat head ford......r u working on a old ford v8 conversion ?

  8. #8
    Super Member kenmac's Avatar
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    yanmar 3110D

    Default Re: Yanmar YM186 Power steering problem

    Strange looking ym186
    Yanmar 3110D
    07 Dodge 2500 5.9 Cummins
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    16' Tow Master Dump Trailer ,20' Yanmar Hauler

  9. #9
    Elite Member
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    gilmer tx
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    yanmar 2002d

    Default Re: Yanmar YM186 Power steering problem

    No recommendations for parts. I'm thinking a good hydraulic shop may have access to any seal parts you might need. Since this was sold on American sold Yanmars you could contact Yanmar dealers but I am doubting they still sell these parts. Keep us informed what you find out. Got more pictures of your project?

  10. #10
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    Default Re: Yanmar YM186 Power steering problem

    Fellas, this is Case garden tractor model 226 repowered with a 1949 Ford flathead V8 and customized with Allis-Chalmers "B" sheet metal. It is near done but with a few issues to resolve, one being this power steering issue. This thread started out with the following earlier thread;

    http://www.tractorbynet.com/forums/y...-question.html

    Thanks, Mike

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