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Pinion Setting Tools

Discussion in 'Early CJ5 and CJ6 Tech' started by alpina72, May 7, 2016.

  1. alpina72

    alpina72 Member

    Was wondering you guys opinions on different pinion setting gauges.
    This is the one I'm currently considering is this one from proform

    ProformParts.com - 66516, PINION SETTING TOOL. FOR REAR ENDS
    Does anybody use that one, is it any good?
    I'd like to get something better than harbor freight quality but not gold plated either.
    Thanks
     
  2. 45es

    45es Active Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

  3. alpina72

    alpina72 Member

    I have a few of those mag base setups amd a full set of gauge blocks.
    How would you use it for setting the pinion depth though?
    Would be nice if I could make it work,
     
  4. Mark Wahlster

    Mark Wahlster Member

    How many ring and pinions are you going to be setting up?
     
  5. alpina72

    alpina72 Member

    Have a Dana 27 a 44 and a couple Chevys on the list.
    New territory for me, starting with the 27 which is just new bearings the rest will be gear swaps.
     
  6. alpina72

    alpina72 Member

    After a few hours of scouring the internet, I found the actual pinion depth.
    Pretty sure I can do it with my depth mic and drop indicator on the mag base amd probably be more accurate than the gauge.
     
  7. Posimoto

    Posimoto Hopeless JEEP Addict

    In the FSM there is a chart that you use the markings on the end of the pinion to determine the startup shim pack. Of course the pattern is the final determiner. A pinion depth guage would be helpful for a diff that has never been setup but I have done several re-gears and never needed one.
     
  8. uncamonkey

    uncamonkey Member

    It would be another tool to have... I never have needed one in all of these years.
     
    alpina72 likes this.
  9. alpina72

    alpina72 Member

    I couldn't find anything in the FSM that gave me an actual # to go by. Which according to the chart i found is 2.904". Everything I found was setting to the gauge.
    This 27 I'm working on now, I don't believe the shims were in the correct locations to begin with. Plus the caps for the carrier bearing were a little on the loose side.
    So anything to make life easier.
     
  10. Rralphs

    Rralphs Old Member

  11. wheelie

    wheelie beeg dummy 2024 Sponsor 2023 Sponsor

    This pinion depth is for a 27? Please double check. I've been searching for the same info and found 2.094 in some jegs article. It's all I could find.
     
    alpina72 likes this.
  12. alpina72

    alpina72 Member

    You are correct Wheelie it's 2.094.
    I transposed the numbers when I typed them. My bad
     
  13. alpina72

    alpina72 Member

    I found a pdf. Download called "the black art of differentials part 2"
    I downloaded it to my phone but now I can't find a link to it again.
     
  14. Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

  15. alpina72

    alpina72 Member

    Last edited: May 8, 2016
  16. Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    alpina72 likes this.
  17. ShnitzlHaus

    ShnitzlHaus Member

    Can I point out if you choose to invest in a setup kit, make sure the manufacture you order your gears from marks the gears for there respected best pattern. (electro penciled, paint markered)
    every gear set is different from another and they will differ in pinion height.
    some manufactures do not mark them, and if you find that out your tool is useless.

    if you decide to do it with the marking compound it is easily do able, you can spare the oil baffle (the ones that get beat to death on dis assembly) with shims, then on the final assembly use the oil baffle :) (i.e., if the oil baffle is .030, use .030 worth of shims)
     
    Last edited: May 11, 2016
    alpina72 likes this.
  18. wheelie

    wheelie beeg dummy 2024 Sponsor 2023 Sponsor

    Thanks. That's helpful.
     
  19. alpina72

    alpina72 Member

    Now that I have my differential set up, I can see how that tool would be pretty useless.
    I'm guessing it relies on the bearing center line to be at the flat where the caps bolt up?
    I was getting .03 difference depending which flat I measured off and the closest was .015 from the actual centerline.
    I ended up figuring out my own way of doing it using depth mics , gauge blocks and an indicator on a magnetic base. Got the pinion depth dead nut on factory specs.
    Setting the bearing preload ....well that was just an educational headache.
    I got lucky with the carrier and was able to use the original shim packs and it worked out almost perfect.
    Now just waiting for more parts for my steering knuckles and hubs which are being shipped by what I'm guessing is a slow moving donkey.
     
    Last edited: May 22, 2016
  20. Posimoto

    Posimoto Hopeless JEEP Addict

    Did you run a gear pattern?