BMW K bikes (Bricks)

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paul.dickson_VA

paul.dickson_VA
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Hello All,

Trying to order a few more parts - I can't seem to find the name of the two red rubber O-rings that are fitted just to the side of the output shaft - can't see them until the bottom crank case is removed. Any ideas what they are called, or possibly what the part numbers are?

    

Inge K.

Inge K.
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I`ll guess it is the O-rings for the water passages you have in mind, since they are red.


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Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

paul.dickson_VA

paul.dickson_VA
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Looked in the Motobins site and a BMW site - can't seem to find them. When I pulled off the crank case (oil pan is attached to) off the engine to gain access to the output shaft two red O-rings were there. Not sure if they need to be replaced, but guessing they do. Any thoughts, Inge? Thanks for the quick reply.

    

Inge K.

Inge K.
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These ones?

Name/Part numbers for two red O-rings next to output shaft O-ring10


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

paul.dickson_VA

paul.dickson_VA
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Yep, those are the one's. Since they aren't oil seals wondering if I can use the same ones, or if they should be replaced?

    

Inge K.

Inge K.
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11 11 1 460 391 O-RING - 15X2,5
11 11 1 460 392 O-RING - 27,3X2,4

Gaskets, seal rings, O-rings or whatever (especially inside the engine) should always be renewed when they are disturbed, unless they are rather new (O-rings).

Exeptions is the rubber gaskets on the engine covers.



Last edited by Inge K. on Tue Aug 07 2012, 20:16; edited 1 time in total


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

RicK G

RicK G
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Any bearing supply place should be able to supply them, BMW very rarely use odd sizes so they should be available. Make sure you get the Viton ones as they will stand the heat best. The black nitrile ones won't stand up under the temperatures and only last a few years.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


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

paul.dickson_VA

paul.dickson_VA
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Great info - thanks, Inge - will do.

    

Inge K.

Inge K.
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@paul.dickson_VA wrote:Yep, those are the one's. Since they aren't oil seals wondering if I can use the same ones, or if they should be replaced?

The small one is for the oil passage.
The other one is for water.


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

paul.dickson_VA

paul.dickson_VA
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Outstanding - Tusen takk, Inge.

    

Inge K.

Inge K.
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@Rick G wrote: Make sure you get the Viton ones as they will stand the heat best.

Viton isn`t that fond of hot water (above 80 degrees celsius).


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

yankeeone

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I picked up the o-rings from MaxBMW they have online parts page,you can find them in the motor breakdown.

    

RicK G

RicK G
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Viton is for high heat applications,the rear main seal is made from it and:!: most valve guide seals as well.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


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

yankeeone

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11_4676 - ENGINE BLOCK MOUNTING PARTS
Name/Part numbers for two red O-rings next to output shaft Print



Name/Part numbers for two red O-rings next to output shaft B0000125




# 7--8
#7-- 11 11 1 460 391 O-RING - 15X2,5
#8-- 11 11 1 460 392 O-RING - 27,3X2,4

you might want to double check






    

paul.dickson_VA

paul.dickson_VA
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Rick/Yankeeone - great, thank you. Have placed my order. Think I am all set. at least at the moment Smile

    

Inge K.

Inge K.
VIP
VIP
@Rick G wrote:Viton is for high heat applications,the rear main seal is made from it and:!: most valve guide seals as well.

I do agree that Viton has a very good resistance against heat, but not in the combination with water.

And since one of the O-rings was to be used in a water passage.......................

Fluorocarbon, application disadvantages

On the other hand you got a whole lot different kind of special qualities within the Viton family (that also have better resistance against hot water), this is the one for standard use.................


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

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