Toyota Ring and Pinion Gear Thread

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    Toyota Ring and Pinion Gear Thread

    I have an idea but not a good direction Trying to establish a thread with FAQ style information for Toyota differentials.

    Guess i'll just start typing and see where it ends up. saving this first post to edit and add more information as i figure out what makes sense to go here.

    http://gearinstalls.com/

    everybody should always go to gear installs .com first and foremost. Zuk is awesome

    this would also make a good thread for people to post their "hey, check my pattern" pictures and such


    Up is difficult, down is dangerous

    #2
    Here are a few pictures as we journeyed to the center, mostly, of an 8" diff with an ARB.

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    This would be why they are coming apart, as well as to get regeared from the existing 5.29 ratio. The major concerns are, did the destruction cause any damage to anything important, bearings and such, and does the rust and corrosion from sitting get in to anything that matters. Best way to find out is to pull it all apart.

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    9/16" on the bulkhead fitting with a 10mm on the inside to free up the air line. Two different diff's here, two different style fittings.

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    12mm to remove the side bearing locks

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    ...


    Up is difficult, down is dangerous

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      #3
      two different styles of ARB here, one uses the hex key screws

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      The other uses a snap ring of sorts

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      large wrench, screwdriver and 3 hands worked. turns out, i prefer the allen key style

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      pops off the air supply side

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      14mm to remove the carried side gear caps

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      Up is difficult, down is dangerous

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        #4
        always mark your caps and try not to drop the carrier on your foot. personally, I don't think most caps or bearing care if they go back in the same place so long as you can get them lined up properly and there isn't excessive wear in the races, but your mileage may vary.

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        with the carrier out, time to bend down the little bolt lock flaps. these are optional, red locktite also works well. 17mm in the impact makes quick work of these

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        hammer to pop off the ring gear. I prefer to start with the soft hammer and move to the hard hammer as needed.

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        these were 5.29 gears with 37 teeth on the ring and 7 on the pinion with other stuff that means things to people smarter than me

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        ring gear is all that holds this half of the carrier together

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        Up is difficult, down is dangerous

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          #5
          here you can see that inside it looks just like a typical open carrier, with the addition of the super beef gears to lock the side gears together

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          here is the carrier after hitting it with a wire wheel. all the corrosion cleaned up pretty well. no real significant pitting to be concerned about, certainly not as pretty as brand new.
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          Time to remove the pinion gear, anything to hold the flange makes life easy and a couple pieces of flat bar and 3 bolts works really well. 30mm pinion nut

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          IMG_3119.JPG
          Upload failed due to your usergroup's upload quota. This file will require 891.4 KB but you only have 663.4 KB of 23.84 MB remaining.
          OK
          welll....damn



          Up is difficult, down is dangerous

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            #6
            Welp, in the interest of finishing out my teardown i'm going to just use placeholders until the picture limit thing is sorted

            Some gentle hammering finishes sending the pinion out of the case.

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            This particular setup was done using 0.072" of shim on the solid spacer for preload, so we'll start with that when going back together

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            Next is removing the front bearing off the pinion. the shims for pinion depth are located between the head and this bearing, press makes the job easy, but i've done several with the hammer. putting the pinion nut back on while hammering helps prevent mushrooming

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            the pinion depth shim stack was 0.067"

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            Seals pullers really do work well. Remove the seal so we can check out the upper or tail or whatever, the smaller pinion bearing

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            Last edited by Provience; 06-04-2020, 06:51 PM. Reason: adding pictures


            Up is difficult, down is dangerous

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              #7
              Shot down the pinion hole, you can see where the housing had cutouts so that the races can be replaced and the thick washer/oil shield on the right hand side. All these bearings and races appear to have no damage, so that's good news

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              and now that we are happy with how all the bearings look, time to order up parts

              1) Ring and pinion gears

              2) pinion seals

              3) pinion nuts

              4) shims <-i've got a few, but more is always better

              going to reuse the bearings, because they are in just dandy condition and reuse the hardware, because none of it is torque to yield. Once parts show up, we will journey the other way and see if we can get a reasonable pattern.
              Last edited by Provience; 06-04-2020, 06:51 PM.


              Up is difficult, down is dangerous

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                #8
                pictures for comparison sake, crush sleeve vs aftermarket solid spacer. substantial difference in beef. i like the machined spacers over the cast ones, mostly because they look better

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                difference between the V6 and 4cyl diff's? Carrier bearings.


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                also, the V6 housing is ribbed for her pleasure

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                This is what a V6 open carrier looks like. fancy 4 pinion 2 piece case construction. here you can see the 2 cross shaft ends. Is it better than the 4cyl style? Yeah, sure. is it a Detroit? no

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                V6 case bolts

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                Last edited by Provience; 06-04-2020, 06:53 PM.


                Up is difficult, down is dangerous

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                  #9
                  Pics no work

                  Comment


                    #10
                    This is what the 4cyl open carrier looks like. this one has been welded and destroyed, but the look is very different than the V6 open carrier

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                    and i need to track down a couple other threads so that i can add my adventure with drilling open and trying to figure out a way to load bolts an 8" (there is simply no good way to do it without being specific to one exact set of gears. swap gears and you'd need to change the whole setup) as well as bring over some pictures of the 9.5" stuff i've got
                    Last edited by Provience; 06-04-2020, 06:54 PM.


                    Up is difficult, down is dangerous

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                      #11
                      Originally posted by Aisin View Post
                      Pics no work
                      yeah apparently i've hit some sort of limit for posting pictures. i've still got a ton of pictures i want to put up and figured that since i'd already started the thread i would just charge ahead and i'll add in pictures when the limit issue get's resolved.



                      Up is difficult, down is dangerous

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                        #12
                        Big thanks man for helping me get this done. There is no way I could do this one solo. It was great meeting your family as well. If you want when I come back over for setup I can bring a 7.5” over I have as well if we want to tare that down for pics as well.

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                          #13
                          Originally posted by Thefishguy77 View Post
                          Big thanks man for helping me get this done. There is no way I could do this one solo. It was great meeting your family as well. If you want when I come back over for setup I can bring a 7.5” over I have as well if we want to tare that down for pics as well.
                          sure thing, if you don't need it, i'll add it to my stack of 3rd parts


                          Up is difficult, down is dangerous

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                            #14
                            Originally posted by Provience View Post

                            sure thing, if you don't need it, i'll add it to my stack of 3rd parts
                            I haven’t had an IFS for 7 years. Doubt I will fund a use for it. 🤣. Unless I build a trebuchet. Hmmm

                            Comment


                              #15
                              This was from a thread I started back in 2010.

                              What brand of 8" Gears have you broken?Edit
                              • Yukon Gear

                                Votes: 4531.7%
                              • US Gear

                                Votes: 64.2%
                              • Genuine Gear

                                Votes: 3021.1%
                              • Motive Gear

                                Votes: 128.5%
                              • Precision Gear

                                Votes: 2014.1%
                              • Factory

                                Votes: 6243.7%
                              • Other (please specify in your post)

                                Votes: 17
                              RIP PBB

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