BMW K bikes (Bricks)

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1Back to top Go down    Final drive seal replacement on Sat Nov 24, 2018 6:01 pm

klompy the grey brick

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asking on behalf of a fellow late model K lover who has a leaking final drive on a K1100. Apparently there are numerous special tools to replace seals. Does anyone know the best option ie does someone do this job professionally or is the job doable with normal tools?

Cheers Klompy


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KKlompy
"Grace" 1984 K100RS Silver VIN 0019026 Mitt eine Staintune Zorst.
"Olivia" 1997 K1100LT Dark Grey VIN WB1052600W0237453.









Chassis number0019026
Vehicle code0503
SeriesK589
ModelK 100 RS 83 (0502 ( 0503 )
Body typeK 100 RS 83 (0502
Catalog modelECE
Production date1984 / 07
Engine0513)




    

2Back to top Go down    Re: Final drive seal replacement on Sat Nov 24, 2018 7:57 pm

RicK G

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It's a very easy job that is if it is the big seal at the wheel and not the small seal behind the spline. It can be done on the bike. The wheel caliper and disc need to be removed while the oil is draining then remove 8 Allen head bolts and the plate with the seal comes away with the crown gear, separate the gear and plate then remove the seal from the plate. You may need to heat the alloy plate to separate the gear as the big bearing is a very snug fit.  Make sure the sealing surface is good, run a fingernail across the surface to feel any grooves and if that is OK then replace the seal and put it back together. Make sure the big shims go back as they were.
Some here have used self taping screws into the seal to pull it out and done it in situ.


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"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

3Back to top Go down    Re: Final drive seal replacement on Sat Nov 24, 2018 8:06 pm

klompy the grey brick

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Thanks Rick shall pass that on. Sounds pretty similar to K100.


__________________________________________________
KKlompy
"Grace" 1984 K100RS Silver VIN 0019026 Mitt eine Staintune Zorst.
"Olivia" 1997 K1100LT Dark Grey VIN WB1052600W0237453.









Chassis number0019026
Vehicle code0503
SeriesK589
ModelK 100 RS 83 (0502 ( 0503 )
Body typeK 100 RS 83 (0502
Catalog modelECE
Production date1984 / 07
Engine0513)




    

4Back to top Go down    Re: Final drive seal replacement on Sat Nov 24, 2018 11:35 pm

klompy the grey brick

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What about the small seal end. Because as luck would have it that’s where it is leaking.


__________________________________________________
KKlompy
"Grace" 1984 K100RS Silver VIN 0019026 Mitt eine Staintune Zorst.
"Olivia" 1997 K1100LT Dark Grey VIN WB1052600W0237453.









Chassis number0019026
Vehicle code0503
SeriesK589
ModelK 100 RS 83 (0502 ( 0503 )
Body typeK 100 RS 83 (0502
Catalog modelECE
Production date1984 / 07
Engine0513)




    

5Back to top Go down    Re: Final drive seal replacement on Sun Nov 25, 2018 1:42 am

RicK G

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Well that changes the story quite a bit. You need a special type of socket to get in and undo the nut that is in front of the seal.


__________________________________________________
"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

6Back to top Go down    Re: Final drive seal replacement on Sun Nov 25, 2018 6:51 pm

Snod Blatter

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Beware that it seems the big seals usually start leaking because the cage in the crown wheel bearing has broken up and turn the seal to shreds, might be worth checking that it's not just the seal!

EDIT: Oops, missed the bit above..



Last edited by Snod Blatter on Sun Nov 25, 2018 7:26 pm; edited 1 time in total


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1989 K100RS SE ABS 8v  VIN: 0149214
Others: 1.5 x Honda CBX250RS-E, '94 CB250, '95 TRX850, '16 Z250SL
http://justbikethings.blogspot.co.uk/
    

7Back to top Go down    Re: Final drive seal replacement on Sun Nov 25, 2018 6:59 pm

charlie99

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a few have made a bar that fits across the  wheel fixing screws klompy

to hold the drive from rotating whilst in a vice  when attempting to undo that nut


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cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

8Back to top Go down    Re: Final drive seal replacement on Sun Nov 25, 2018 8:21 pm

mike d


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Well that changes the story quite a bit. You need a special type of socket to get in and undo the nut that is in front of the seal.

It's not the nut, which is just a 36mm deep walled socket, but the castleated ring which holds the seal that needs a special tool.

Mike

    

9Back to top Go down    Re: Final drive seal replacement on Sun Nov 25, 2018 8:54 pm

charlie99

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yep its a thing a few have made here as well ...is it 2" exhaust pipe with the castellation's cut into it ….then a tommy bar through holes drilled through the shaft of the exhaust pipe

and heat to remove the lock tight holding it in place   ?


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

10Back to top Go down    Re: Final drive seal replacement on Mon Nov 26, 2018 9:08 am

mike d


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Don't know about the 2" pipe, because I have a few of the BMW tools (33-1-700) - I run the UK club's tool hire facility. These have a 1/2" square female to take a standard 1/2" drive tommy bar. Heat will help.

Mike

    

11Back to top Go down    Re: Final drive seal replacement on Mon Nov 26, 2018 12:44 pm

charlie99

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well that would make a huge difference mike

cheers


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cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

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