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Oil sight glass removal

Discussion in 'GS Boxers' started by Dan Cãta, Dec 4, 2019.

  1. Dan Cãta

    Dan Cãta Long timer Supporter

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    I know that there are countless threads about this, but after changing a few of these, here is what I have found to be the easiest way, yet.

    I have changed the oil level glass on my old 1100RT as part as a winter maintenance, together with some other stuff like heated grips, hard brake lines, etc.

    The bike has fresh oil inside the engine and I did not want to drain it. So I have leaned the bike over a stool on it's R/H side valve cover.


    upload_2019-12-4_16-52-43.png

    I had to add some spacers under the wheels, in order for the lean angle to permit me not to spill the oil once the glass was removed.

    As always, I broke the old glass using a large flat screwdriver(first I have cleaned the area surrounding it using brake cleaner):

    upload_2019-12-4_16-57-33.png

    The result:

    upload_2019-12-4_16-57-51.png

    upload_2019-12-4_16-58-5.png

    Cleaned the pieces from the seal:

    upload_2019-12-4_16-58-11.png

    Now for removing the seal... During the years, I have noticed that some seals come off easily, some you need to convince them to come off. Especially on the 1200 hexhead series, they thend to get stuck in there.
    IMHO, the secret is to pry it out evenly, since the edge is hard metal, getting it side after side is not really the best approach.

    So that is why I am using the bearing extractor kit. This allows a straight, even, dismount:

    upload_2019-12-4_16-58-25.png

    Putting the tool together, feels like a sniper assembling a rifle :D

    upload_2019-12-4_16-58-33.png

    upload_2019-12-4_16-58-38.png

    One pull and it came right off:

    upload_2019-12-4_16-58-47.png

    upload_2019-12-4_16-58-54.png

    All the puzzle pieces together:

    upload_2019-12-4_16-59-1.png

    You can almost see it's heart beating inside:

    upload_2019-12-4_16-59-6.png

    For putting the new one in, I have used the bushing made for the triple clamp bearing insert, it fitted right over the new seal:

    upload_2019-12-4_16-59-23.png

    And voila!

    upload_2019-12-4_16-59-52.png

    I can only hope that the bike will last 23 more years with this new seal on :D

    Dan.

    Attached Files:

    #1
  2. Dirt Bag

    Dirt Bag Jesus Hates A Pussy Supporter

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    Nice write up and pics- next oil change my 2006 gets a new one!
    #2
  3. mouthfulloflake

    mouthfulloflake Not afraid

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    I cant see the photos, I get a sugar sync website/ad

    edit: looks great, im surprised the bike did not need to lean over further to keep the precious juice inside.
    #3
  4. Dan Cãta

    Dan Cãta Long timer Supporter

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    Yeah, that is why I have put them as album, in the first rows :(
    Fixed now.

    Dan.
    #4
  5. JimVonBaden

    JimVonBaden "Cool" Aid! Supporter

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    Nice. It never occurred to me to do it like that. You are right though, some really fight you getting them out, some are easy. The R1200 usually fights you, especially if you neglect to remove the securing C-clip! :-)
    #5
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  6. Dan Cãta

    Dan Cãta Long timer Supporter

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    Good catch @JimVonBaden, I did not mention the 1200 case where there is also a c-clip involved.
    That one obviously needs removal prior to getting the seal out :D

    Dan.
    #6
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  7. wellcraft

    wellcraft Been here awhile

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    What was the purpose of removing the sight glass in the first place? Was it leaking oil or was something else going on that it required a new one?
    #7
  8. GS Addict

    GS Addict Pepperfool Supporter

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    Nice share Dan!
    I too break the "glass" remove it and then us a brake drum adjusting tool to lever them out.
    And yes, some are really seated in there - that white powder (corrosion) is like loctite
    #8
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  9. mouthfulloflake

    mouthfulloflake Not afraid

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    some cleaners ( like brake cleaner) will make the glass cloudy and difficult to see the oil level
    some weep or leak
    some folks swap them as a precautionary thing I guess
    #9
  10. JimVonBaden

    JimVonBaden "Cool" Aid! Supporter

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    Some blow out or melt from overheating, and some just fall out.
    #10
  11. vagueout

    vagueout Long timer

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    I used a very safe easy way to remove the window from my 1100S some years back. I didn't like the idea of drilling the "glass" or smashing it to pieces risking any debris going into the engine case. I used a small soldering iron to melt a hole through the plastic window then an Allen key as a pick to lever the whole assembly out. Safe and simple.:*sip*
    #11
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  12. mouthfulloflake

    mouthfulloflake Not afraid

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    so its not glass, its a plastic... hmmm

    I guess that explains why the brake cleaner hazed mine

    :photog
    #12
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  13. lewisjr1

    lewisjr1 Long timer Supporter

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    I believe the latest BMW part no. 11 11 8 523 906 to have a glass screen or window. Haven't the plastic versions gone away?

    Also, EME's listing for a replacement sight glass includes a link to the factory service instructions for the pre-water 1200s.

    Interweb claims the German spelling = Olstandsanzeige entkoppelt
    #13
  14. cycleman2

    cycleman2 Long timer

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    The new ones are glass, the old ones where plastic. BMW uses the same sight glass for all its R & K bikes, just on some you need the c-clip. When putting the new one in be careful and don't pound it in too far or you will break the glass on the new one. Ask me how I know.
    #14
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  15. JimVonBaden

    JimVonBaden "Cool" Aid! Supporter

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    A guy did that at my last tech day. Fortunately I had a spare. I don't have any more spares. :-)
    #15
  16. lewisjr1

    lewisjr1 Long timer Supporter

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    I'd put a replacement sight glass in the freezer for a few hours before inserting it into a warm engine block. Couldn't possibly hurt.
    #16
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  17. GS Addict

    GS Addict Pepperfool Supporter

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    Might work on some but definitely not on a corroded one.
    #17
  18. lewisjr1

    lewisjr1 Long timer Supporter

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    dry, Dry, DRY climate vs. Wet + corrosive chemicals.

    C'est la vie, but I'd prefer to ride in the former.
    #18
  19. GS Addict

    GS Addict Pepperfool Supporter

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    I'm with you on that for sure!:thumb
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  20. Dan Cãta

    Dan Cãta Long timer Supporter

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    There was some leak, around the edge of it. I figured it was a matter of time till it popped out, and we don't want loosing the oil while riding, right? :D

    Dan.
    #20