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  1. #1
    New Member
    Join Date
    Nov 2011
    John Deere 400 garden tractor

    Default Loss of power assist steering on J.D. 400

    I'm having a problem with the steering on my old 400. The power assist steering has quit working suddenly. Checked all of the obvious and see nothing out of order. The one thing I did find was that if I use any of the other hydro controls (ie lift the mower deck) while steering, it steers just fine. But during normal cutting, it steers like a tank. This tells me that I have a problem in the hydro system, but I'm not sure where to start. Any thoughts?

  2. #2
    Super Star Member
    Join Date
    Aug 2001
    Upper Midwest USA
    JD_4x2_Gator, JD_4300, JD_X485, JD_425, JD_455, JD_110

    Default Re: Loss of power assist steering on J.D. 400

    A search on TBN may bring up some helpful ideas where to start.
    One thread recently comes up.

    Surely there are others that can help.

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