power steering problem 2001 pete 379

Discussion in 'Trucks [ Eighteen Wheelers ]' started by johnjohn1984, Jan 28, 2020.

  1. johnjohn1984

    johnjohn1984 Bobtail Member

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    Jan 28, 2020
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    i have a 2001 pete 379, i recently changed out the power steering pump and also steer gear and have hard steering. seams like a lot of steering wheel kick. the list of things ive done with in the last six months...new king pins with load bearings, new steer leaf spring bushings with pins, 3 axel alignment,

    if im on a nice highway it drives fine but the moment i get on a rougher road it has a lot of steering kick, almost a real hard time keeping it stright. any help would be appreciated, thanks
     
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  3. Chubby Fly

    Chubby Fly Medium Load Member

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    Should be an easy thing to pinpoint. I have a 02 pete 379. When you say "kick" are you saying its a kick where you feel hydraulics fighting you? If so, it has nothing to do with kingpins or alignment. Or is it bump steer? Where you hit a bump and the steering wheel pulls to side of bump? How is your steer assist cylinder?
     
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  4. Bakerman

    Bakerman Road Train Member

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    I had a rusty u-joint in my steering shaft, replaced the shaft that had greaseable u-joints-problem solved.
     
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  5. johnjohn1984

    johnjohn1984 Bobtail Member

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    thanks for the reply. yes when you hit a bump or any uneven surface its hitting and puling the wheel. sorry but i dont know what t steer assist cylinder is. all i know i have a
    is the steer box and power steering pump.. thanks
     
    Last edited: Jan 28, 2020
  6. johnjohn1984

    johnjohn1984 Bobtail Member

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    Jan 28, 2020
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    thanks for the reply, ive checked the steering shaft and the u-joins and they all seam fine and greased.
     
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  7. Chubby Fly

    Chubby Fly Medium Load Member

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    steer assist is hydraulic cylinder mounted on passenger side
     
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  8. johnjohn1984

    johnjohn1984 Bobtail Member

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    mine does not have that on the truck. should it have one? thanks
     
  9. Chubby Fly

    Chubby Fly Medium Load Member

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    im not sure my friend. maybe it was an option on my truck. I wish i could be more help. I never ran into this issue. You stated you have new steer gear box and a new steering pump. That has me baffled. should be running good once air pockets are out
     
  10. johnjohn1984

    johnjohn1984 Bobtail Member

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    Last edited: Jan 28, 2020
  11. johnjohn1984

    johnjohn1984 Bobtail Member

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    agreed! i dont know what else it could be but a friend told me to put 15w40 in it and it worked good for a few days then went back to hard steering wheel and bump steer ect ect. only other thing i can thinbk of is try using atf and changing the filter out again and see what happends, thanks
     
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