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Dana 30 Inner C Removal

Discussion in 'Intermediate CJ-5/6/7/8' started by 47v6, Mar 17, 2023.

  1. Mar 22, 2023
    47v6

    47v6 junk wrecker! 2023 Sponsor 2022 Sponsor

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    Pinion angle look about right?
    656F57FF-2A85-45E1-86E0-30B87720DF00.jpeg
    look how far the spring mount needs to go onto the housing to make it equal on both sides
    271DB567-6CD6-47C5-881E-65EA1C5518E0.jpeg
    should I weld on the inner C on the passenger side about .5 degree less than the DS to make it pull to the shoulder or just go equal? I read that what the factory does.
     
    timsresort likes this.
  2. Mar 22, 2023
    Fireball

    Fireball Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    Looks like it's pointed up too much. For no vibration, the flange on the diff needs to match the angle of the flange on the transfercase. The transfer case flange isn't visible in the picture, but I'm guessing your drivetrain isn't that nose down.
     
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  3. Mar 22, 2023
    Fireball

    Fireball Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    This is probably the best video I've seen on driveshaft phasing:
     
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  4. Mar 22, 2023
    Rich M.

    Rich M. Shoe salesman 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    Is the suspension loaded?
     
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  5. Mar 22, 2023
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
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    Pinion angle depends on if you plan on having the hubs locked and/or transfer case engaged at higher speed. If so as Fireball said the u-joint angles need to as close as possible. No different than a rear driveshaft. Put the caster angles the same on both sides. Some manufacturers are different side to side and some are not. I’ve always set them equal and they’ve always driven well. Road crown alone will cause the vehicle to want to drift toward the passenger side. Really only useful if you fall asleep at the wheel anyway.
     
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  6. Mar 22, 2023
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
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    I had one of those at work my last year there. It was a wonderful tool for teaching about u-joint and driveshaft angles and phasing.
     
    Fireball likes this.
  7. Mar 22, 2023
    timsresort

    timsresort Active Member 2023 Sponsor 2022 Sponsor

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    Looks right. I go about 15* pinion up on a front. I would not worry about driveline angle, you are not going fast enough in 4wd to matter. And yes, you want the weight on the front end before you tack the perches. It's more important to keep the yoke out of the rocks, and then get camber right. Make the C's the same, 5* back, or so. I always get one on, then run a straight edge through the ball joint holes, then do the other, and you can eyeball between the 2 straight edges, so they are equal angle. A digital angle finder with a zero-out function works well, but don't agonize, as I did, over tenths of degrees. It's a jeep.
     
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  8. Mar 22, 2023
    Fireball

    Fireball Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    That's a good point. I drive my Jeeps in 4wd on snowy roads in winter so vibration at speed matters to me.
     
  9. Mar 22, 2023
    timsresort

    timsresort Active Member 2023 Sponsor 2022 Sponsor

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    Right, and I don't drive my trail jeep much on the highway in snow, but if I did, it would be at maybe 25 mph, and I don't think that's fast enough to cause a vibration. And come to think of it, I've always wondered, if the front of the case is pointed up, and the front pinion is pointing up, how would you get them parallel?
     
  10. Mar 22, 2023
    Jw60

    Jw60 Sitting up n buckled down. 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    Noise,
    Vibration,
    Harshness,


    :shrug:
    Turns radio up.

    Leaking,
    Leaning,
    Smoking

    :shrug:
    Turns radio up.



    Electrical issues...

    :gaah:
     
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  11. Mar 22, 2023
    Fireball

    Fireball Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    Oh no, the radio's not working!
     
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  12. Mar 22, 2023
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
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    I believe you mean caster. Caster is the forward or rearward tilt of the steering axis from zero.
     
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  13. Mar 23, 2023
    47v6

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    Tacked the spring perches on
    F3D55A05-47E7-45B7-9902-56539DA30EB4.jpeg
    Ruffstuff sells a bottom mount ubolt mount and u bolts for a D30, but they don’t work.
    E28EAA90-F4E3-4F16-8D93-E9AD03908053.jpeg
    ED8EA203-5459-4620-A3BD-4DCD013E6CD0.jpeg
    I’m over manufacturers who say something works when it doesn’t. The parts are nicely made, but just don’t work…

    I have some 3/8 plate I will cut up to replace the ubolt plate that needs replacing. I will just continue to make every single part of this junk heap.
     
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  14. Mar 23, 2023
    nickmil

    nickmil In mothballs.

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    When setting pinion angle I come off the yoke face if possible. You know that is vertical. The rough casting of the carrier you don’t really know if that is on plane or not. If the yoke is not installed I try to come off the pinion shaft opening, where the seal is installed as that is also a known vertical point. You will probably be fine and easy enough to double check. Just one more thing to consider.
     
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  15. Mar 23, 2023
    vtxtasy

    vtxtasy oldbee 2024 Sponsor 2023 Sponsor

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    I looked at those plates. Not liking that the inside split is not welded to increase the strength. It looks like the plate would fold when tightening the bolts.
    The pumpkin side u-bolt and the plate are pushed inboard toward the casting. I am not sure how well that would work.
     
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  16. Mar 23, 2023
    Jw60

    Jw60 Sitting up n buckled down. 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    They are sold "unfinished"
    I just hate how they didn't clean up the corner notch in solidworks. That happens on some stuff with that godawful cube corner
    They really should have made a brick with the spring relief, then shelled the body with an open bottom put the corner notches as the material thickness +0.001 off the top plane with the obrounds then inserted bends from there.

    Needless to say... I've already modeled it up for the front... the inside big u-bolt gets inset soo far I found it not worth running and then the shocks get pushed up or out into the knuckle and tie rod. Not an issue on the rear but lots of issues for the front.
     
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  17. Mar 23, 2023
    47v6

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    I wanted to save some fab work and have something a bit "trick". the welding aspect is nothing.. they just don't work as a package though. If they sold shorter Ubolts, I would have been done already.

    The part quality was excellent though.

    So now I make my own trick parts. Anyone got a Con Fer bolt plate I can copy? Post a pic. I got lots of 3/8 plate...
     
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  18. Mar 23, 2023
    jeepermc

    jeepermc Active Member

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    Is that how you got your "junk wrecker" nickname? :rofl:
     
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  19. Mar 23, 2023
    47v6

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    hahahahah. Junk wrecker!!!!!!!
     
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  20. Mar 23, 2023
    timsresort

    timsresort Active Member 2023 Sponsor 2022 Sponsor

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    Yes I did, whoops.
     
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