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King Pin confusion

Discussion in 'Early CJ5 and CJ6 Tech' started by lower7, Mar 5, 2007.

  1. Mar 5, 2007
    lower7

    lower7 Junior Member

    Boise, ID
    Joined:
    Oct 29, 2004
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    22
    Is the upper king pin on a dana 25 knuckle supposed to be splined? My lower pin is not and all my parts research says that I need part #'s 52940 and 52941 for both the upper and the lower bearings and cups but my upper pin is not going to work. Am I missing something? The frame and body of this jeep have shown pretty good front end damage so I dont think it would be a stretch to say that the front axle is a transplant but from all outside appearances it "is" a 25. I can take pics of the king pin if necessary.

    Thanks in advance

    John Hicks


    1960 CJ5
     
  2. Mar 5, 2007
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Tantallon, Nova...
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    Never seen or even heard of a splined king pin, can't imagine the reason one *would* be splined:?

    I've pulled a few 25s apart, the bearings & pins are definitely the same top & bottom-


    H.
     
  3. Mar 5, 2007
    Hawk62cj5

    Hawk62cj5 Captain of OldSchool

    Brodnax Va.
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    Oct 28, 2004
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    694
    Ummmmm are you sure its spined or did the needle bearings "spine it"

    On mine one of the needle bearings ate into the king pin enuff for it to look like it was machined spined.I replaced all my pins and needle bearings.
     
  4. Mar 5, 2007
    lower7

    lower7 Junior Member

    Boise, ID
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    Oct 29, 2004
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    Here is pic of what I have.
     
  5. Mar 5, 2007
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Tantallon, Nova...
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    Not sure whatnhell you got there but on a 25 the bearings are tapered rollers that fit over the pin & into cups pressed into the bell, these are the right bearings-

    [​IMG]

    Ignore the rods, they were part of my setup to check if the axle was bent:rofl:


    H.
     
  6. Mar 5, 2007
    lower7

    lower7 Junior Member

    Boise, ID
    Joined:
    Oct 29, 2004
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    Well, thats what the bottom bearing looks like. The brass piece in my picture is the same size as the new bearings I got and even fits in the new cup. But there are no moveable parts on it. There is a channel that swirls around it from the top to bottom (grease channel???) I was really hoping that someone was going to tell me that I had the wrong parts. bummer.

    Can a guy buy a new pin for the top?
     
  7. Mar 5, 2007
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Tantallon, Nova...
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  8. Mar 5, 2007
    lower7

    lower7 Junior Member

    Boise, ID
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    Oct 29, 2004
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    Perfect. that is the part I was looking at earlier. I have lost a little faith in what I have and was a little hesitant to buy it. Here is a better shot of the "bearing" next to a new bearing.
     
  9. Mar 5, 2007
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
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    that's interesting indeed
    gonna have to dig thru the old books and see if I can ID that puppy
     
  10. Mar 5, 2007
    lower7

    lower7 Junior Member

    Boise, ID
    Joined:
    Oct 29, 2004
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    Any info would be appreciated. At this point I am just hoping that P/N 910901 from Walck's will replace the splined pin in the picture. This jeep has had a few suprises hidden in it. I'm still trying to find out where the engine came from.

    Thanks,

    John
     
  11. Mar 6, 2007
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
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    The splined king pin and bronze bushing is from a Scout Dana 27. Scouts used a bronze bushing on the bottom IIRC and a bearing like Jeep's use on the top. Got some more if you want'emR) . Nickmil
     
  12. Mar 6, 2007
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
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    Nick beat me to it.
    The Scout parts book shows that style.
    you could probably grind the splined portion of the cap off and use it that way for the bearing.
     
  13. Mar 6, 2007
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    What you have isn't necessarily bad. The front end of my M37 is setup like that. I wonder if that's from an MB or GPW? Maybe they were made that way? Does your front axle have the Bellcrank welded on the axle tube, or evidence it was there?
     
  14. Mar 6, 2007
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    Nevermind, now we know. R)
     
  15. Mar 6, 2007
    lower7

    lower7 Junior Member

    Boise, ID
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    Oct 29, 2004
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    Thanks for all the input. i have one more thing I was hoping someone could answer. Will Walcks P/N 910901 replace my existing splined pin and cap? I have already bought the bearing and cup and was hoping I could just buy a new pin and use the "correct" bearings.

    Also, the diff has "25" on it. are there other markings I should be looking for that would identify it as a Scout axle as opposed to a jeep axle or were they interchangeable?

    Thanks again,

    John
     
  16. Mar 6, 2007
    Vanguard

    Vanguard Take Off! Staff Member

    Vista, CA USA
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    That kingpin and bushing replacement is from a scout axle.
     
  17. Mar 6, 2007
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Tantallon, Nova...
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    Yes, that P/N is for the cap/pin only, bearings are listed/sold seperately.

    H.
     
  18. Mar 6, 2007
    kaiser_willys

    kaiser_willys Well-Known Member

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    i think the reason they did the splined deal was some where along the line they have had trouble with the king pin spinning inside the bearing,just a theroy
     
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