1. Registration trouble? Please use the "Contact Us" link at the bottom right corner of the page and your issue will be resolved.
    Dismiss Notice

More On My Rear Dana 44....

Discussion in 'Intermediate CJ-5/6/7/8' started by Lockman, Jan 31, 2020.

  1. Feb 21, 2020
    ITLKSEZ

    ITLKSEZ Volvophilic

    Post Falls, ID
    Joined:
    Aug 13, 2015
    Messages:
    3,928
    I’ll wait for someone to chime in with a second opinion before I wholly accept the liability for this. :D
     
    FinoCJ likes this.
  2. Feb 21, 2020
    '74Renegade

    '74Renegade Active Member 2019 Sponsor

    Fair Oaks, CA
    Joined:
    Sep 1, 2005
    Messages:
    1,115
    So I'll ask a stupid question.....how do you check the gear mesh without being able to turn the gears. Obviously I've never installed gears before.
     
  3. Feb 21, 2020
    Lockman

    Lockman My " Rosie" 2020 Sponsor 2019 Sponsor

    White City, NY 14617
    Joined:
    Dec 4, 2018
    Messages:
    665
    HI Mike,
    Not a stupid question at all., but these are the side gears inside the case. I think the gear mesh that you are asking about , refer's to the ring & pinion gears
    after the case is installed ? I am in no way an expert either ; that is one reason I ask questions to our forum members. There is a lot of knowledge & experience here.
     
  4. Feb 21, 2020
    Fireball

    Fireball Member 2020 Sponsor 2019 Sponsor

    Pullman, WA
    Joined:
    Feb 9, 2018
    Messages:
    286
    Lockman and ITLKSEZ like this.
  5. Feb 21, 2020
    '74Renegade

    '74Renegade Active Member 2019 Sponsor

    Fair Oaks, CA
    Joined:
    Sep 1, 2005
    Messages:
    1,115

    Got it! I was thinking ring and pinion. (y)
     
  6. Feb 22, 2020
    oldtime

    oldtime oldtime

    St. Charles,...
    Joined:
    Aug 14, 2006
    Messages:
    2,716
    Sorry I'm really late to see this topic.

    Here is a little hint whenever setting up a new ring gear or using a different case.
    After setting up several differentials I taught myself this new trick.
    If you'll notice the ring has 10 bolts to hold it in place.
    This is time consuming but if you try the ring in all 10 positions then you can test lateral gear runout at all 10 of the positions.
    The trick is to start with minimum runout and hopefully it will be virtually zero.
     
  7. Feb 22, 2020
    ITLKSEZ

    ITLKSEZ Volvophilic

    Post Falls, ID
    Joined:
    Aug 13, 2015
    Messages:
    3,928
    I gave this some thought...
    If you can put the other axle shaft in the top and try to spin that with a pipe wrench while the other shaft is in the vice, it’ll give you 1:1 leverage on the clutches. By trying to spin the differential case, you’re locking the clutches tighter as you apply force. I’ll bet it’ll spin if you let go of the case and spin the opposing axle.
     
    Fireball and Lockman like this.
  8. Feb 22, 2020
    Lockman

    Lockman My " Rosie" 2020 Sponsor 2019 Sponsor

    White City, NY 14617
    Joined:
    Dec 4, 2018
    Messages:
    665
    Ryan, Thank you so much. Makes perfect sense....... I Just tried that , with a 16" pipe wrench . Does not move , just made the axle in the vice slip.
    I was the Joint's arm wrestling champ , 40 years ago. I don't know how much torque I'm applying ..... My geusstimate is ~ 100 ft pds ? According to our TSM, if over two hundred is applied & it does not turn, something's wrong. Of course , that's for a Dana 60 ?
    I'm glad I did not start the picture below , yet. I think I will have to take it apart again ? :worry:
    03 13 97 series 3 Timken Case Bearings install.jpg
     
  9. Feb 22, 2020
    Lockman

    Lockman My " Rosie" 2020 Sponsor 2019 Sponsor

    White City, NY 14617
    Joined:
    Dec 4, 2018
    Messages:
    665
    Thanks Ken,
    Did you , by chance , ever post this trick before ? It seems that I read that somewhere or sometime ?
     
  10. Feb 22, 2020
    Lockman

    Lockman My " Rosie" 2020 Sponsor 2019 Sponsor

    White City, NY 14617
    Joined:
    Dec 4, 2018
    Messages:
    665
    Hi Again , Gents...... Just found this :
    " Typically, if the breakaway torque value is below 50 ft-lbs, the differential needs to be rebuilt or simply re-shimmed. A good range for street use that still provides decent performance is between 110 and 140 ft-lbs of torque. If the clutch pack is shimmed tighter, it produces poor on-road manners during slow, tight-turning maneuvers. These poor manners are exhibited by tire wind-up during a low-speed, tight turn maneuver (such as pulling into a parking spot). Also, the differential will act more like a locked differential and the vehicle can tend to under steer or plow.

    For all my bench testing & checking, Does any one have 2) , 30 Spline axle shaft cutoff stubs? Should have looked for these before I started :oops:
     
  11. Feb 22, 2020
    Fireball

    Fireball Member 2020 Sponsor 2019 Sponsor

    Pullman, WA
    Joined:
    Feb 9, 2018
    Messages:
    286
    ITLKSEZ is right. There are ramps on the cross shaft that squeeze the clutches tighter as you rotate the case relative to the axle shafts. This allows the Powr-Lok to increase lockup based on how much torque is being put into it. To get an accurate measurement, you should put the other axle in the top and measure that torque from that.

    It's been too long since I've done free-body diagrams in physics to prove it, but it might make a difference.
     
  12. Feb 23, 2020
    oldtime

    oldtime oldtime

    St. Charles,...
    Joined:
    Aug 14, 2006
    Messages:
    2,716
    I think I likely posted that trick once before.
    Getting the ring gear on straight as possible can definitely make .005 or .006 thousands of difference on the lateral runout.
     
  13. Feb 23, 2020
    Lockman

    Lockman My " Rosie" 2020 Sponsor 2019 Sponsor

    White City, NY 14617
    Joined:
    Dec 4, 2018
    Messages:
    665
    New Trac- Loc is in . Waiting on a Dial indicator back from my Pal. :waiting: It " Feels " like very little backlash. :) Lateral runout on the ring gear will follow,
    But i'm feeling a bit better. Axles are all rebuilt with new bearings, retainer's , & seals, and are ready to go in. I'm into the Trac-Loc for only 300 Bucks , Including new Timken's & cone's. Aggravation & disappointment are often priceless , though. With you guy's support , I kept moving forward. Let's hope my Jeep does too. :whistle:
     
  14. Feb 23, 2020
    Lockman

    Lockman My " Rosie" 2020 Sponsor 2019 Sponsor

    White City, NY 14617
    Joined:
    Dec 4, 2018
    Messages:
    665
    Thanks.
    BTW, I feel that He is usually right......He's kinda a mechanical & woodworking genius , IMHO.
    Oh yeah, it's not a Power-lok that I've been working with. :confused:
     
  15. Feb 23, 2020
    Fireball

    Fireball Member 2020 Sponsor 2019 Sponsor

    Pullman, WA
    Joined:
    Feb 9, 2018
    Messages:
    286
    Trac-Loks do a similar thing, but it's the spiders on the cross pin themselves that push the outer spiders against the clutch disks as torque is applied to the case. I suspect it's not as well controlled as the ramps on a Powr-Lok.
     
    Lockman likes this.
  16. Feb 24, 2020
    Lockman

    Lockman My " Rosie" 2020 Sponsor 2019 Sponsor

    White City, NY 14617
    Joined:
    Dec 4, 2018
    Messages:
    665
    So..... Lateral run out at 10 ring bolt positions is zero to 0.001 :) Baclkash is 0.005 , same as the open case was. :)

    I've Got A Limited Slip in my Jeep ..... YaHoooo :beer: Torque test worked with one 31 X 10.5 on the ground & The other up . Cranked hard , maybe ~ 140 lbs, & the pinons turned a bit ! :D ( I knew I did it correctly, but I was starting to doubt & :worry: )

    I searched all over my '75 Dana 44 axle tubes .... no vents ? I do have grease Zerks for the wheel bearings. I was reading in Moses Ludell's CJ5 re-builders manuel, & he showed how to vent the housing cover ? I need to do that before I put it back on , fill it. Then I'll break in my new LSD when the weather
    ( Road Salt ) clears in the next couple- three days.
    Anyway , would you think that would vent the tubes , also ?
    Thanks for all your support on my endeavor...... I learned a lot of lesson's on this one.:study:

    Oh yeah..... Next is the Lock-Right in the front Dana 30, 27 Spline. That's going to go full steam , straight ahead. I'm psyched.
     
    Fireball, OzFin and FinoCJ like this.
  17. Feb 24, 2020
    Dphillip

    Dphillip Sponsor

    Omaha NE
    Joined:
    Nov 25, 2008
    Messages:
    272
    Congrats Richie!
    I’m glad you pushed through it for a successful outcome!
     
    Lockman likes this.
  18. Feb 24, 2020
    Fireball

    Fireball Member 2020 Sponsor 2019 Sponsor

    Pullman, WA
    Joined:
    Feb 9, 2018
    Messages:
    286
    Lockman likes this.

Share This Page

New Posts