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Pittman arm position.

Discussion in 'Suspension, Steering & Brakes' started by 84 M1008, Jan 11, 2019.

  1. 84 M1008

    84 M1008 Full Access Member

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    Hey Bruce, how do I tell if it is a 2wd box? It is a hydroboost setup. I don't know if it's relevant or not.
     
  2. bucket

    bucket Super Moderator Staff Member

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    The 37's didn't hurt it. Just lack of maintenance and probably a good and regular application of the skinny pedal.
     
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  3. bucket

    bucket Super Moderator Staff Member

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    It's a 2wd box, or at the very least, the sector shaft has been swapped to a 2wd unit. Which then makes it a 2wd box.
     
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  4. Westislander

    Westislander Full Access Member

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    Not being an off road guy, what is the purpose behind crossover steering.
     
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  5. 84 M1008

    84 M1008 Full Access Member

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    From what I gather, it corrects steering geometry.
     
  6. 84 M1008

    84 M1008 Full Access Member

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    So here's the deal. It is crossover steering. As I remember now, my M1031 had the stock drag link. I do need the drop pitman arm. When I tried to center the steering wheel after I put the Borgeson steering shaft in it, it makes contact with the crossmember. Here's some pics. 20190112_101007.jpg 20190112_100839.jpg 20190112_100901.jpg
     
  7. Craig 85

    Craig 85 Supporting Member Supporting Member

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    Granted this is a coil over set up, but it lets you do this without the steering bind or bump steer.

    [​IMG]

    I looked at Rockauto's photos and they look the same. I can only guess the out put shaft must be clock 90 degrees off from the 4WD unit.
     
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  8. Craig 85

    Craig 85 Supporting Member Supporting Member

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    I was looking at ORD's cross steer set up and your's. It looks like you have a dropped pitman arm. Their's is 3 1/2" vs. 1 1/2" for stock. Do you have an "S" bend in the drag link? I can't tell from the pictures. They sell one the prevents interference.

    [​IMG]
     
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  9. bucket

    bucket Super Moderator Staff Member

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    It's the output shaft, or "sector" shaft. The way the pitman arms attach are very different and it's a different spline setup.
     
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  10. 84 M1008

    84 M1008 Full Access Member

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    Yes, there is an S bend in it. I think because of the 6 in lift, the drag link is on a pretty steep angle. I might need a deeper pitman arm.
     
  11. 75gmck25

    75gmck25 Full Access Member

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    This is the explanation of 2WD vs. 4WD steering boxes that I found in the ck5.com forum.
    "With a 2wd steering box the pitman arm moves side to side and the 4wd moves front to back. The sector shaft is different which won't allow you to just swap pitman arms. The 4wd box has a through bolt holding the pitman arm onto the sector shaft whereas a 2wd bos uses a nut and washer to hold it on. You need a 2wd steering box if you're doing crossover steering otherwise the 2wd box won't work unless you install a 4wd sector shaft. I believe the year difference for the fitting change was 1980 and earlier for the flare fitting hose and 1981 and later for the metric O-ring style hose."

    Crossover steering is covered in this article. https://ck5.com/forums/resources/crossover-steering.16/

    Bruce
     
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  12. 84 M1008

    84 M1008 Full Access Member

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    Thanks everyone, please excuse my ignorance to the crossover setup for these trucks. I'm just not familiar with it. Now I know what I have. Again thanks to everyone for the valuable information.

    Wayne.
     

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