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Help! Replacing Oil seal behind front sprocket

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    Help! Replacing Oil seal behind front sprocket

    I have an GS550 LX it started leaking oil from from the bottom of the front sprocket cover after I took along ride with a slightly loose chain. I'm replacing the chain and front sprocket and thought why I was in there I should replace the oil seal. Does anyone have any advise? This is my first major repair I'm doing on my own. How do I hold onto the sprocket to get the 32 m nut off. I was told just use a rag and hold on tight. I'm trying to avoid buying the specialty tool even if I could find one.

    #2
    Leave the chain on, stick it in gear and get a mate to hold the rear brake on. Either that or wrap an old towel around it until it fills the void to the crankcase and crack the nut off with a sharp tap on a spanner.
    79 GS1000S
    79 GS1000S (another one)
    80 GSX750
    80 GS550
    80 CB650 cafe racer
    75 PC50 - the one with OHV and pedals...
    75 TS100 - being ridden (suicidally) by my father

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      #3
      does anyone own an impact???
      air or electric would save folks a huge amount of problems with large fastener removal.
      thats my suggestion anyways.....
      and that seal is supposed to be replaced when the cases are split but i have had OK luck with removing the old one and replacing with a known good used one...
      new seals are quite large so that they can be compressed between the case halves.
      dont kill the messanger.......

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        #4
        If you've got the case cover off, and the front sprocket, look around carefully at the seals in there. Mine had a big leak from the clutch pushrod oil seal, but the main crank seal was good. They both drip down to the same place, so it can be hard to tell until you run the motor with the sprocket off (you'll see it drip). I replaced my pushrod seal 4 times and only did a marginal job on the 4th go by loosening some case bolts to make the hole a bit larger (which probably didn't change it by more than a thousandth). Other people say they go right in. Go figure.

        I got the first one from BikeBandit, but then found that my local Suzuki bike shop could get them way faster and cheaper (without the shipping to Canada).

        And yes, an impact wrench and oversized socket was instrumental in dealing with the sprocket nut. Just hold down the rear brake and use the air wrench... no problem. Cheapo from Princess Auto (oops, I admitted it).
        Last edited by Guest; 07-08-2009, 05:29 PM. Reason: Thought of something else.

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          #5
          Check out this thread. It may be of some help. I have other pics if you need them.

          This forum contains old posts which may have information which may be useful. It is a closed forum in that you can not post here any longer. Please post your questions in the other technical forums.

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            #6
            Help!!!! Oil seal

            WOW!!! I couldn't ask for more detailed directs. THis is why I dig this forum!

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