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Need Brake And Axle Advice

Discussion in 'Intermediate CJ-5/6/7/8' started by joltes, Jul 14, 2019.

  1. Jul 14, 2019
    joltes

    joltes Member

    Wheeling, WV
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    I am replacing my entire brake system, and want to clean up the backing plates. I pulled the axle out and would like some advice on how to proceed. Should I replace anything in the pictures, pertaining to the bearings?
    Is the part to the inside of the bearings on the axle a seal or bushing? Does it come off easily so I can remove the backing plate?
    The sleeve inside the axle housing where the bearing rides is loose. Is it supposed to be? There is a bunch of gunk in the axle tube that looks like a pile of greasy rust. Should I clean that out now, or pull the cover after I get it re-assembled?
     

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  2. Jul 14, 2019
    sterlclan

    sterlclan Member 2022 Sponsor

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    the bearing and race are junk, the inner seal lives just behind the pitted race and should be replaced too. clean the tubes out before installing any new parts. the ring on the axle inboard of the bearing is a retainer collar and has to come off before the bearing will, it will come with the new bearing as its destroyed to remove it. the race shouldn't spin in the tube sometimes a few punch marks in the tube will tighten it up. if you don't have a factory service book I recommend one. ere is an online source for the manual. Jeep® 1974 TSM online the axle "should" slide out of the backing plate the flanged retainer on the other side of the backing plate stays with the axle...
     
  3. Jul 14, 2019
    joltes

    joltes Member

    Wheeling, WV
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    Ok, so I remove the collar and then the bearings and backing plate will slide off? Then I replace the inner seal, bearings and the race that is inside the axle tube? Is the bearing and race supposed to be one piece? I have a manual, but wanted advice on what all needed replaced. Thanks for the help!
     
    Last edited: Jul 14, 2019
  4. Jul 14, 2019
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
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    Normally the backing plate stays with the Jeep when the axle and bearing is pulled. Something is goofy if the backing plate won't come off of the axle without removing the bearing. Normally you use some coat hanger or hay wire and leave the backing plates hanging on the chassis when you pull the axle out. Once you remove the bolts from the end of the housing, there is nothing to keep the backing plate on the axle.

    upload_2019-7-14_15-51-18.png
    Axle assembly out of the Jeep, backing plate still on the Jeep.

    Yes, that bearing is terrible. Look at the race - see all the pits and marks? Junk! It will be really noisy too.

    You need a new bearing set and both seals. The bearing set will include a bearing and a new collar that will have to be pressed on. From the outside in, axle flange, bearing retainer, outer oil seal, bearing and race, bearing retainer, inner oil seal.

    The bearing should have come out with the race. It's a unitized bearing that goes on the axle before the axle goes into the housing. Refer to the manual that Jeff linked. You want the procedure on p. 10-9 for "semi-float flange shaft."
     
    Last edited: Jul 14, 2019
  5. Jul 14, 2019
    joltes

    joltes Member

    Wheeling, WV
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    Yeah, the race won’t fit through my backing plate, unless my backing plate has part of the seal “rust-welded” into it.
    Is it supposed to come apart where that circle is that I cleaned off? I thought that was part of the backing plate.
    B9364B78-2C2F-4695-88FD-6760C3A64A44.jpeg D5BB1A8B-B750-464C-A68A-EBCA81966C0F.jpeg BD5BFBCD-797C-4849-93F5-6DBCF65D3ACC.jpeg FC8C429A-A847-468D-96FF-FB9AFC27F6B8.jpeg FC8C429A-A847-468D-96FF-FB9AFC27F6B8.jpeg
     
  6. Jul 14, 2019
    joltes

    joltes Member

    Wheeling, WV
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    Well, I guess I answered my own question.

    A48BA005-1D39-4117-A3BA-B75D06A94D0D.jpeg
     
    Last edited: Jul 14, 2019
  7. Jul 14, 2019
    sterlclan

    sterlclan Member 2022 Sponsor

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    I cut almost all the way through the inner pressed on collar then smack it with a fat chisel and a bfh in the groove just cut, they split and then you can remove the retainer.
     
  8. Jul 15, 2019
    joltes

    joltes Member

    Wheeling, WV
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    I got everything removed from the axles and degreased them. The tubes have a little bit of muck in them. Now I'm wondering if I should pull the carrier and replace the inner seals while I have it this far apart. Is there any issue with doing that? Will the carrier bolt right back in without any adjustment needed? I guess if I do that, I will probably just pull the whole axle housing and clean all the rust and coating and grease off of it. I just wanted to redo the brakes and get this thing moving under its own power. :shrug:
    Also, is it important to keep the axles in their respective sides, or are they interchangeable?
     
    Last edited: Jul 15, 2019
  9. Jul 15, 2019
    sterlclan

    sterlclan Member 2022 Sponsor

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    The rear inner seals are out at the wheel bearing end no need to pull the ring gear. Pull the seals and clean the tube.
     
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  10. Jul 15, 2019
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

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    If you worry about dirt, change the oil twice or thrice in a few months. It's even more appropriate in a Jeep, since differential oil contamination with dirt and water is much more likely than in passenger cars.
     
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  11. Jul 15, 2019
    joltes

    joltes Member

    Wheeling, WV
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    Oh, sweet. I thought there was another seal at the inner end of the tubes. I didn’t have my TSM with me to look.
     
  12. Jul 17, 2019
    joltes

    joltes Member

    Wheeling, WV
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    Ok. Got the bearings and axles back in. Next is the brake hardware and lines.
    And what is the plug in the axle flange called, and is it really needed?

    B415A05D-46DB-4B44-8DE2-2437FE4A91F5.jpeg
     
    Last edited: Jul 17, 2019
  13. Jul 17, 2019
    OzFin

    OzFin Vintage Jeep Guy

    Michigan
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    Not sure what the official Jeep name of the plug is called, I used a Dorman freeze plug.
    NOTE !--- I had replacement axle shafts so the hole in your axle flange could be a different size therefore the Dorman part that I used could be different than what you may need... but you should be able to find a suitable plug at the parts store.
    Oz
    [​IMG]

    [​IMG]
     
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  14. Jul 17, 2019
    Miller Mears

    Miller Mears Member

    Virginia Beach VA
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  15. Jul 17, 2019
    joltes

    joltes Member

    Wheeling, WV
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  16. Jul 17, 2019
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

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    I thought it did :rolleyes:
     
  17. Jul 17, 2019
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

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    Thanks to Miller Mears for posting a link to that thread. (y) I had forgotten about it, and was going to look in the parts book for a name and Jeep PN when I arrived home.

    To the OP, from your response I'd presume that you are most concerned about whether you can leave it out or not. The easy answer is that Dana-Spicer put it there so the brakes are sealed and you can still service the axle. They would have put an open hole and cut costs if there was no need for it. Whether leaving it out will cause problems, I don't know. Likely no one here can answer that with authority. I'd guess it would depend on your driving conditions and circumstance.
     
    Last edited: Jul 17, 2019
  18. Jul 17, 2019
    joltes

    joltes Member

    Wheeling, WV
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    My apologies, I guess my response was a little short. It just seems to me that when someone answers a question with only a link that they are being short as well. I know questions get repeated, and it seems sometimes that folks are leery of asking them for fear of someone telling them to do a search. I see so many posts where people start their question with, "I searched for this and couldn't find anything"...

    I did a search. I didn't find the answer to all of my questions, so I asked them. The TSM calls it a cup plug. It doesn't list a part number and I couldn't find a replacement with the google machine. I just didn't know if there was a defined purpose for the plug. I thank you for your answers.

    I would like to replace it, if for no other reason than aesthetics, but I guess it would help to keep brake dust off of the front of the wheel.
     
  19. Jul 18, 2019
    sterlclan

    sterlclan Member 2022 Sponsor

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    I haven’t had either plug in mine in years brakes get changed yearly I clean inside then.
     
  20. Jul 18, 2019
    Miller Mears

    Miller Mears Member

    Virginia Beach VA
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    yes i should have explained better but was at work. replaced mine by using a scrap piece of flat steel (around 14ga i think) and cutting out a rough round shape. then using a stationary belt sander rounding the disk on an angle so that i could "press fit it" with a socket and hammer. so far after several trips its all good. I was worried that the heat generated by the brakes could loosen the disk but so far all is well. once again thanks for all the help and ideas when i was working on mine. I learn something every time log on.
     

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