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  1. #1
    Member
    Join Date
    Apr 2004
    Posts
    36
    Location
    Pittsburgh, Pa
    Tractor
    John Deere 4200

    Default Hard turning at low RPM

    Hello All:

    Have a 4200 that when at idle and up to about 1/3 throttle is very difficult to turn the wheel.

    If I get the throttle above 1/3 to half, the wheel turns pretty much normal.

    Any suggestions?

    TIA.

    Brandon
    2000 4200, 420FEL, 60MMM, PHD, 5'BH

  2. #2
    Super Member Dargo's Avatar
    Join Date
    Mar 2004
    Posts
    5,980
    Location
    S. IN
    Tractor
    Jinma, Foton, TYM, Belarus, Yanmar, Branson, Montana, Mahindra and maybe some green and orange too.

    Default Re: Hard turning at low RPM

    I had a 4600 that did that on and off. Finally it did it for the dealer and I believe they replaced the pump that runs the steering. It has been a while and I've slept since then, but I think that it is a different pump than runs the loader? [img]/forums/images/graemlins/confused.gif[/img] If not, I'm sure someone will correct me. Anyway, the dealer fixed it. If you are under warranty I'd take it to the dealer.

  3. #3
    Elite Member Gary_in_Indiana's Avatar
    Join Date
    Apr 2002
    Posts
    3,388
    Location
    Fort Wayne, IN
    Tractor
    John Deere 4200 MFWD HST w/ JD 420 FEL w/ 61" loader bucket & toothbar & JD 37 BH w/ 12" bucket

    Default Re: Hard turning at low RPM

    My 4200 isn't as easy to turn at low RPM as it is at the higher throttle levels. It's not a problem. I'm driving slower so I don't need to turn all that far that fast. I just assumed that the pump wasn't operating at full efficiency because of the lower RPM's.

  4. #4

    Join Date
    Jun 2004
    Posts
    36
    Location
    s.central,pa.
    Tractor
    4410 e-hydro

    Default Re: Hard turning at low RPM

    i would think pump performance should be good at idle as well as wide open throttle.there could be an internal valve bleeding off at idle on you're machine.i would certainly have it checked out by you're dealer,sounds like pump replacement is in order.if it is not under warranty,there may be a rebuild kit available.it's a pretty straight forward operation,but if you are not mechanically capable have it performed by a professional as you can cause you're self lots of grief if not done properly.the power steering pump is seperate from the hydro pump,J.D. did it that way to avoid the problem you are having. good uck with the fix and let us know how it turns out.

  5. #5
    Member
    Join Date
    Apr 2004
    Posts
    36
    Location
    Pittsburgh, Pa
    Tractor
    John Deere 4200

    Default Re: Hard turning at low RPM

    Thanks for the input.

    I guess I will have the dealer take a look at that too.

    I have a few other things they need to fix for me as well that I have been waiting until I finished up all my landscaping and work around the house.

    1. Rear PTO needs adjusted as it clicks some (have to push the lever forward abit and it stops)
    2. Front axle seal need replaced
    3. A-B-C range shaft that goes into the trans broke off.
    4. Now add on the power steering pump.

    This little tirp is probobly going to cost me over $1000 at approx $50/hr. Ouch !

    Brandon

  6. #6
    Super Member Dargo's Avatar
    Join Date
    Mar 2004
    Posts
    5,980
    Location
    S. IN
    Tractor
    Jinma, Foton, TYM, Belarus, Yanmar, Branson, Montana, Mahindra and maybe some green and orange too.

    Default Re: Hard turning at low RPM

    I know it likely won't help much, but you own a good solid machine and it is unlikely to have to keep fighting these things with your JD. If you are not far out of warranty, it is not out of the question to have JD help some. It wouldn't hurt to ask.

  7. #7
    Super Star Member RoyJackson's Avatar
    Join Date
    Nov 2001
    Posts
    18,522
    Location
    Bethel, Vermont
    Tractor
    John Deere 4400 MFWD, Deere 855D UTV, Z920A Zero Turn Mower and assorted implements

    Default Re: Hard turning at low RPM

    check your front tire pressure.

    If this happens when you've a load in the bucket, up the front tire pressure to 25 lbs or so.


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