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Proper Driveshaft Install?

Discussion in 'Early CJ5 and CJ6 Tech' started by Matt J, Sep 28, 2005.

  1. Sep 28, 2005
    Matt J

    Matt J New Member

    York, PA
    Joined:
    Sep 24, 2002
    Messages:
    23
    I've heard the proper way to install a driveshaft is with the slip-end up-hill at the t-case, which I have always done. What are some reasons against installing the slip-end downward, at the axle? I'm into doing things the proper way but with the SM420 swap, clearance is tight around the front output. The slip-end of my shaft is larger than the tube end and installing it with the smaller end where clearance is tigher may help my situation. Suggestions?
     
    Matt J, Sep 28, 2005
    #1
  2. Sep 28, 2005
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
    Joined:
    Sep 22, 2002
    Messages:
    5,349
    Dragging it thru the mud and water and forcing the debris into the slip joint.
     
    Mcruff, Sep 28, 2005
    #2
  3. Sep 28, 2005
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
    Joined:
    Sep 23, 2002
    Messages:
    12,529
    X2
    Nickmil.
     
    nickmil, Sep 28, 2005
    #3
  4. Sep 28, 2005
    66cj5

    66cj5 Jeep with no name

    NorthWest Indiana
    Joined:
    Sep 10, 2003
    Messages:
    2,084
    water can't get out. lots more spinning weight if shaft breaks. doesn't look "right".
     
    66cj5, Sep 28, 2005
    #4
  5. Sep 28, 2005
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
    Joined:
    Jul 30, 2003
    Messages:
    8,525
    the slip for the front d/shaft should be at the front axle, that's factory.
    the rear d/shaft would have the slip at the t/case, that's also factory.
    that "looks" right to me :)

    can of worms
    ymmv
     
    jpflat2a, Sep 28, 2005
    #5
  6. Sep 28, 2005
    Matt J

    Matt J New Member

    York, PA
    Joined:
    Sep 24, 2002
    Messages:
    23

    what about the grease hole in the end of the shaft. under compression grease will squirt out, shouldn't it let water out too?
     
    Matt J, Sep 28, 2005
    #6
  7. Sep 28, 2005
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
    Joined:
    Sep 22, 2002
    Messages:
    8,360
    Yes....;)
     
    Patrick, Sep 28, 2005
    #7
  8. Sep 28, 2005
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
    Joined:
    Jul 30, 2003
    Messages:
    8,525
    I was going to suggest that as well !
    I can see mud and dirt causing premature wear on the splines; that is a point well taken. They wear out fast enough as it is !

    do what will work best for your own needs
     
    jpflat2a, Sep 28, 2005
    #8
  9. Sep 29, 2005
    lynn

    lynn Time machine / Early CJ5 HR Rep Staff Member

    Huntingdon PA
    Joined:
    Sep 20, 2002
    Messages:
    3,437
    I received and installed my new Woody yesterday. I installed the fatter end at the tcase, the thinner end at the diff.
    looks like I could possibly experience contact around the starter area under full suspension compression, but maybe not.
    This shaft is 2" diameter, a bit bigger than what I was running and WAY bigger than the factory V6 shaft.
    The slip joint on this one is covered by a large flexible boot like a shock boot, secured with metal bands at each end.

    Matt, you going to be ready for Tioga? What are your travel plans?
     
    lynn, Sep 29, 2005
    #9
  10. Sep 29, 2005
    Matt J

    Matt J New Member

    York, PA
    Joined:
    Sep 24, 2002
    Messages:
    23
    Hey Lynn, we must have ordered our shafts the same day 'cause mine just came yesterday as well. Very happy with what came and everything should fit. My front shaft is very close and I'm gonna have to do some checking with what it will do during flex.

    At this point I'm pretty sure the jeep will be ready, hoping to get it done a week or so before to work out any bugs. Regardless, Dad and I will go jeep or no jeep and I guess hitch rides with someone on the trail. We are planning on heading up thrusday night/afternoon and if the jeep comes, it will be on the trailer. It seems that there is nothing major left to do on the jeep (fingers crossed), need to have exhaust made, floor pan finished, grille and fenders put on and then give everything the operations test. I'll keep you posted.
     
    Matt J, Sep 29, 2005
    #10
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