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B18B1 axle seal replacement

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  • #479322
    EricEric
    Participant

      I need to replace the passenger side axle seal on my hatch that has a B18b1 LS swap. I’ve never had to do this before, but i have replaced axles before. So removing the axle would be a piece a cake. I was just wondering if I will need to buy a seal remover/install tool, and if so what type would i need? If not, what’s the best way to go about removing and installing the new seal? Also, i’m kinda torn on what MTF i should run.I either want to go w/ Honda MTF or GM Synchromesh, since i’ve heard good things about Synchromesh. If anyone has opinions on tranny fluid, i’d love to hear them. Thanks.

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    • #479343
      LevinLevin
      Participant

        Personally i’d use the oem honda atf…atf-dw1.
        Taking the passenger axle seal out will mean you should drain the atf prior or you will have it all over yourself.

        As for the seal…

        After taking the axle out attempt to pull the seal using your finger. If that will not work use a small pick. Just make sure to not grind/scratch the seal housing. With the old seal out inspect the seal housing and and clean it using a clean cloth if it is dirty. I wouldn’t spray brake cleaner at it simply as some may go inside the transmission. Usually you do not need to lube the axle seals when going in but using just a small amount of lube never hurt. Use some atf from what you drained to lube the outside. Place the seal in and use a socket the same size as the seal or a pvc pipe cutout the same size as the seal to tap the seal in place. I’d suggest using a rubber hammer and tapping the seal evenly on all sides. Not one side fully and then the other…work it even all around.
        Place the seal in as far as the body of the seal is flush the the tranny casing. NOT when the outer protruding lip of the seal is flush, and not as far in as you can get it.

        Lastly, use an OEM honda seal…ive seen/heard bad stories with aftermarket seals not being the correct size.

        #479395
        EricEric
        Participant

          Sounds pretty easy, thanks for the info.

          OEM parts are the way to go, i learned from using cheap Vato Zone parts on my last car. So it’s OEM or better for me now.

          #480338
          EricTheCarGuy 1EricTheCarGuy
          Keymaster

            If you’ve done axles it should be easy because removing the axle is the hardest part in my opinion. Once you’ve done that you can just pry out the old seal. Before installing the new seal put a little grease or MTF on the inside lip of the seal, don’t install it dry. You can tap it in with a hammer, preferably a rubber mallet. You can purchase seal installers but I’ve never used them and I’ve been fine. Just be sure that all the edges are flush after the install.

            As for what fluid to use, you can use either. I’ve tried the GM fluid and was happy with the results.

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