Chrysler 8 3/4 Axle bearing and Seal R&R...A How To

Engine, Trans & Driveline

  1. threewood

    threewood FBBO Gold Member FBBO Gold Member

    Messages:
    2,900
    Likes Received:
    2758
    Joined:
    May 30, 2014
    Location:
    Yuma, AZ
    Local Time:
    8:34 PM
    I'm in the process of getting my rear end cleaned up and installing new seals and bearings so I figured I would take some time and document my process. A press is almost a must have and my HF 12 ton has paid for itself and then some. Well worth the money imho.

    1. Here is the old assembly (L and R are same procedure, only difference is the adjuster)
    20161001_104847.jpg

    2. Get a cutoff tool and cut a slit in the collar. You will also cut into the bearing, no biggie as it is being replaced. The collar and bearing have to come off to replace the outer seal.
    20161001_105105.jpg

    3. Get a cold chisel, gloves and eye pro and start chiseling into the slit. Obviously use a vise or anvil under it. It doesn't take hulk like hammering. The collar will stretch and slide off. You do not need to cut all the way through.
    20161001_105418.jpg 20161001_105506.jpg

    4. Now, what I do is cut a groove in the bearing shoulder and cut off as much of the cage as I can. With the groove I can pull the bearings out with a magnet. When all the bearings are out I pull out and snip the cage in half and remove.

    20161001_110216.jpg 20161001_110309.jpg 20161001_110412.jpg 20161001_110806.jpg 20161001_110910.jpg 20161001_111011.jpg
     
    • Like Like x 2
    • Thanks! Thanks! x 2
    • HEMI-ITIS

      HEMI-ITIS STREETER FBBO Gold Member

      My Photo Garage
      Messages:
      8,355
      Likes Received:
      7122
      Joined:
      Dec 14, 2008
      Location:
      Long Island,New York
      Local Time:
      11:34 PM
      You will Have to press on the new ones.
       
    • threewood

      threewood FBBO Gold Member FBBO Gold Member

      Messages:
      2,900
      Likes Received:
      2758
      Joined:
      May 30, 2014
      Location:
      Yuma, AZ
      Local Time:
      8:34 PM
      5. Now we have access to the inner race. Cut a groove in it as well. An angle keeps you from cutting through the retainer. It doesn't need to be super deep. Once it is cut, use the cold chisel and hammer on it until it starts to spin. It is now split. You do not need to wail on this either, just plenty of medium taps will crack it as it is pretty hard steel. Wear eye pro at a minimum.
      20161001_111309.jpg
      20161001_111246.jpg 20161001_111345.jpg

      6. Clean everything up and make sure the seal contact surface is clean and not grooved too bad. You can clean them up with scotchbrite pads or very very fine sandpaper. Replace the outer seal in the retainer. I use a seal tool set from HF which has all the correct sizes.
      20161001_112035.jpg 20161001_112144.jpg 20161001_112943.jpg 20161001_113537.jpg

      7. Now is the perfect time to replace any wheel studs. These are the only leftys left on the car so I am going to swap them over to righty. I press them out with a bronze bushing so they aren't damaged as someone may still have a use for them.
      20161001_113553.jpg 20161001_120038.jpg 20161001_123158.jpg
       
      • Thanks! Thanks! x 3
      • Like Like x 2
      • threewood

        threewood FBBO Gold Member FBBO Gold Member

        Messages:
        2,900
        Likes Received:
        2758
        Joined:
        May 30, 2014
        Location:
        Yuma, AZ
        Local Time:
        8:34 PM
        Hey man, don't give away the ending! :)
         
        • Agree Agree x 3
        • threewood

          threewood FBBO Gold Member FBBO Gold Member

          Messages:
          2,900
          Likes Received:
          2758
          Joined:
          May 30, 2014
          Location:
          Yuma, AZ
          Local Time:
          8:34 PM
          8. Lets get it back together. Retainer goes on first!!!!!! Don't forget this and make sure it is in the correct orientation. Then we drop the new bearing in place and press it home.
          20161001_123603.jpg 20161001_123710.jpg 20161001_123852.jpg 20161001_123930.jpg

          9. Once the bearing is seated against the shoulder, pull the axle out and drop the collar on the shaft and press it home as well.
          20161001_124409.jpg

          10. All done. I'll probably update this as I get everything else together.
          20161001_124526.jpg
           
          • Thanks! Thanks! x 4
          • Like Like x 3
          • 69a100

            69a100 Well-Known Member

            Messages:
            3,910
            Likes Received:
            4481
            Joined:
            Aug 22, 2012
            Location:
            The Real World
            Local Time:
            8:34 PM
            Nice write up! To bad people can't wait till the end before they make comments.
             
          • SgtLee511

            SgtLee511 FBBO Gold Member FBBO Gold Member

            My Photo Garage
            Messages:
            439
            Likes Received:
            228
            Joined:
            Jun 14, 2014
            Location:
            NE TEXAS
            Local Time:
            10:34 PM
            It was very informative, I liked it, I had to figure that out all by my self last month, you don't get that in a service manual, Ma Mopar didn't give you many pics either. Great compilation.
             
          • 69b3rt

            69b3rt Well-Known Member

            Messages:
            222
            Likes Received:
            147
            Joined:
            Oct 28, 2015
            Location:
            Fargo, ND
            Local Time:
            10:34 PM
            Please let us know your procedure for packing the bearings with grease also.
             
          • HEMI-ITIS

            HEMI-ITIS STREETER FBBO Gold Member

            My Photo Garage
            Messages:
            8,355
            Likes Received:
            7122
            Joined:
            Dec 14, 2008
            Location:
            Long Island,New York
            Local Time:
            11:34 PM
            Why didn't you "press" off the old one??
             
            • Agree Agree x 1
            • threewood

              threewood FBBO Gold Member FBBO Gold Member

              Messages:
              2,900
              Likes Received:
              2758
              Joined:
              May 30, 2014
              Location:
              Yuma, AZ
              Local Time:
              8:34 PM
              Could have packed them with a grease cone before install but didn't think of it. I have a grease needle that works well to fill all the cavities. Just squeeze it in one end till it comes out the other.
               
            • threewood

              threewood FBBO Gold Member FBBO Gold Member

              Messages:
              2,900
              Likes Received:
              2758
              Joined:
              May 30, 2014
              Location:
              Yuma, AZ
              Local Time:
              8:34 PM
              If you look in the service manual, it requires a specialized tool I don't have and isn't necessary when using the cut and split technique. There is little to no room to get anything behind the bearing to press or pull and they are on there tight.
               
              • Like Like x 2
              • Agree Agree x 1
              • khryslerkid

                khryslerkid FBBO Gold Member FBBO Gold Member

                My Photo Garage
                Messages:
                12,615
                Likes Received:
                15038
                Joined:
                Mar 10, 2010
                Location:
                Hanover, Pennslyvania
                Local Time:
                11:34 PM
                Threewood, what axle housing do you have in your '62 or isn't that from that car?

                One of these can work in a press for bearing removal. You still have to be careful not to damage the retainer plate.
                download.jpg

                Thanks for the "How To" thread!
                 
                • Agree Agree x 2
                • threewood

                  threewood FBBO Gold Member FBBO Gold Member

                  Messages:
                  2,900
                  Likes Received:
                  2758
                  Joined:
                  May 30, 2014
                  Location:
                  Yuma, AZ
                  Local Time:
                  8:34 PM
                  I've seen those but don't have one in my toolbox. This rear end is out of my 69 GTX, 741. My 62 also has a 741 but has tapered axles.
                   
                  • Thanks! Thanks! x 1
                  • Cranky

                    Cranky Moderator Staff Member FBBO Gold Member

                    Messages:
                    15,545
                    Likes Received:
                    9752
                    Joined:
                    Dec 4, 2009
                    Location:
                    Pasa-getdown-dena Texas
                    Local Time:
                    10:34 PM
                    I use a torch to heat up the bearing retainer collar but have used a grinder too. In many cases, the grinder created enough heat to expand it but if it doesn't, a flat chisel will usually do the trick. Also, be careful when you use a chisel on the bearing as particles from the bearing or from the chisel can penetrate your skin too....even through your clothing.
                     
                    • Agree Agree x 3
                    • Glenwood

                      Glenwood FBBO Gold Member FBBO Gold Member

                      My Photo Garage
                      Messages:
                      2,548
                      Likes Received:
                      2035
                      Joined:
                      Jun 19, 2015
                      Location:
                      Kawartha Lakes, Ontario
                      Local Time:
                      11:34 PM
                      great thread, thanks for posting this!
                       
                      • Like Like x 1
                      • Agree Agree x 1
                      • kiwigtx

                        kiwigtx International Mod Staff Member FBBO Gold Member

                        My Photo Garage
                        Messages:
                        13,017
                        Likes Received:
                        17911
                        Joined:
                        Jun 12, 2012
                        Location:
                        Tomorrow, NZ
                        Local Time:
                        3:34 PM
                        Thanks for sharing this info and the great pictures. :thumbsup:
                         
                        • Like Like x 1
                        • Fran Blacker

                          Fran Blacker FBBO Gold Member FBBO Gold Member

                          My Photo Garage
                          Messages:
                          3,638
                          Likes Received:
                          3017
                          Joined:
                          Sep 23, 2016
                          Location:
                          Connecticut
                          Local Time:
                          11:34 PM
                          Great how to! Just changed third member to see if the one in the car was the noise from rear or axle bearings. Wanted to try 4.10's anyway Had a 3.23's one legger in the car, will put a suregrip in it while it's out.
                          One comment the factory service manual says to put a strip of metal around axle seal surface so you don't hit it with the grinder, oops.
                           
                        • threewood

                          threewood FBBO Gold Member FBBO Gold Member

                          Messages:
                          2,900
                          Likes Received:
                          2758
                          Joined:
                          May 30, 2014
                          Location:
                          Yuma, AZ
                          Local Time:
                          8:34 PM
                          I have 3.23s in my 62 with an Eaton Trutrac and really like it. Street car and it turns 3k @ 73mph so it is pretty good on the highway. Would like to try something lower to see how well it runs.

                          Anything wrapped around the axle is a safety measure and should be employed. Take it slow and remember, you don't need to cut all the way through. The chisel will do the job.
                           
                          • Thanks! Thanks! x 1
                          • 62 Dart Convertible

                            62 Dart Convertible Well-Known Member

                            My Photo Garage
                            Messages:
                            964
                            Likes Received:
                            401
                            Joined:
                            Feb 1, 2011
                            Location:
                            Australia
                            Local Time:
                            1:04 PM
                            Great write up threewood - thanks!
                             
                            • Agree Agree x 1
                            • 747mopar

                              747mopar Well-Known Member

                              Messages:
                              9,822
                              Likes Received:
                              9870
                              Joined:
                              Oct 30, 2012
                              Location:
                              ohio
                              Local Time:
                              10:34 PM
                              I've used a few methods, the chisel like you mention, grinding one side paper thin until it turns purple or just expanding it with heat until it pulls right off like Cranky mentioned. Yes you can buy a tool to press it off but everybody has a grinder lol. Nice write up.