BMW K bikes (Bricks)

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1Back to top Go down    changing final drive seals on Sat Apr 18, 2015 12:56 am

k100newbie

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Hi all I have the method down I think but having trouble finding a reasonable priced version of the tool that removes the ring with the 4 indents on the input side of the final drive

    

2Back to top Go down    Re: changing final drive seals on Sat Apr 18, 2015 1:04 am

RicK G

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The problem with getting a tool for that is that you cant buy cheap ones. Only the manufacturers of high end tools make them and in small quantities so you just have to wear the price.
I bought a 3/4 drive socket the right external diameter and cut it back so there was 4 tangs, it works quite well but even the ordinary socket was about $40.
When you do go to undo the nut use some heat as the factory used red loctite and it needs heat to melt it.


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If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

3Back to top Go down    Re: changing final drive seals on Sat Apr 18, 2015 1:08 am

k100newbie

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Thanks Rick guess I'm going socket shopping

    

4Back to top Go down    Re: changing final drive seals on Sat Apr 18, 2015 6:54 am

k100newbie

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is there anything i have to setup mesurement wise when i remove that to replace the seal ?

    

5Back to top Go down    Re: changing final drive seals on Sat Apr 18, 2015 7:40 am

RicK G

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there will be some shims so take note of where they came from and replace them in the same place


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If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

6Back to top Go down    Re: changing final drive seals on Fri May 01, 2015 8:47 pm

k100newbie

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Ok so trying to change the seal on the bevel drive/final drive the input side so small seal and for the life of me cannot get the nut undone I have secured it all in a jig but have tried heat, big bar rattle gun etc and still no joy any ideas

    

7Back to top Go down    changing final drive seals on Sat May 02, 2015 3:28 am

RT

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Hi mate, someone will know for sure but I'm thinking that's the one that gets torque of around 200 ftlb when done up, so won't be too easy. Wait til an expert comes on though.


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8Back to top Go down    Re: changing final drive seals on Sat May 02, 2015 4:27 am

k100newbie

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Hmm might be worth taking to bmw mechanic and just paying them to do it prob only take them an hour with the proper tools

    

9Back to top Go down    Re: changing final drive seals on Sat May 02, 2015 4:34 am

RicK G

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You wont get that big 4 prong nut of with a 1/2 in rattle gun. They are tough real tough.


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If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

10Back to top Go down    Re: changing final drive seals on Sat May 02, 2015 5:31 am

k100newbie

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Not worried about the 4 prong one it's the nut on the spline I can't undo wonder how much a mech would charge

    

11Back to top Go down    Re: changing final drive seals on Sat May 02, 2015 5:31 am

k100newbie

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Not worried about the 4 prong one it's the nut on the spline I can't undo wonder how much a mech would charge

    

12Back to top Go down    Re: changing final drive seals on Sat May 02, 2015 6:05 am

RicK G

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I have not had any trouble with them but I think I have used the 3/4 rattler on it. It would be marginal with a 1/2 inch rattler.
Wouldn't cost much as it should only be a very quick job.


__________________________________________________
If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

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