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Thread: 2002 K1200RS Clutch Slip

  1. #1

    2002 K1200RS Clutch Slip

    The clutch on my K1200RS slips a bit if I gas it in 3 or 4 and don't down shift. I'm careful not to do this, but I imagine it's also slipping some on the highway. I used to be a Tech and can tackle most mechanical issues. R&R the clutch looks to be a major job and probably requires special tools. Should I attempt it or leave it up to an experienced BMW shop? The bike is currently in FL, but will be in WI this summer. Any suggestions would be appreciated. Thanks.

  2. #2
    Liaison 20774's Avatar
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    Welcome to the forum! Can you provide some further background? Are you first owner? How many miles on the bike...on the clutch?

    I wonder if the clutch is hydraulically actuated? Could this slave cylinder be acting up or low on fluid?
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  3. #3
    Debbie's Servant Lee's Avatar
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    Welcome to the forum

    The K1200RS has a history of the rear main seal leaking and getting oil on the clutch.

    This thread on i-BMW may help.
    http://www.i-bmw.com/showthread.php?...al+bmw+k1200rs
    Lee
    2016 R1200RS
    MOA # 30878
    Past BMW Bikes: 2011 K1300S, 2003 K1200RS, 1991 K75S, 1987 K75T, 1984 R100RT

  4. #4
    3 Red Bricks
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    In the future, please put the year and model of the bike you are refering to. IN THE TITLE of your thread. That way you will get more relevant answers and others will be able to search this forum easier.
    That being said, if you add that info in your next post, I will put it in the title of this thread.

    The most common cause of clutch slippage on early K bikes, other than a grossly misadjusted clutch with no freeplay, is the O-ring behind the nut that holds the "flywheel" to the output shaft. It drys out and cracks, causing oil to get on the friction surface. The labor to replace this O-ring is only 1 step less than replacing the rear main seal. So, if you're already in that deep.......

    It's not a hard job, just a lot of things to remove to get there. Get a shop manual and follow the steps. Pay extra special attention to the part about keeping the three parts of the clutch assembly orientated with the same rotational orientation on reassembly to maintain proper balance. That means marking the parts before disassembly.




    LONG MAY YOUR BRICK FLY!

    Ride Safe, Ride Far, Ride Often

    Lee Fulton Forum Moderator
    3 Marakesh Red K75Ss
    Mine, Hers, Spare

  5. #5
    Debbie's Servant Lee's Avatar
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    Quote Originally Posted by 20774 View Post

    I wonder if the clutch is hydraulically actuated?
    Yes, the K1200RS has a hydraulic clutch.
    Lee
    2016 R1200RS
    MOA # 30878
    Past BMW Bikes: 2011 K1300S, 2003 K1200RS, 1991 K75S, 1987 K75T, 1984 R100RT

  6. #6

    More info

    Thanks for all the replies. Sorry I did not add more details. I am not the original owner, I purchased the 2002, K1200RS three weeks ago with 15,300 miles. I did not notice any clutch slippage initially. lt showed up a few days later when driving in town. I was not aware you could adjust a hydraulic clutch. Also, back in the old days, if we had oil on our clutch it would grab. This engages fine. I will order a work shop manual ASAP. Thanks again.

  7. #7
    Debbie's Servant Lee's Avatar
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    If you decide to do the work yourself there are 3 seals or o-rings.
    If you spend all that time to break the bike in two you should replace all three.

    On my 2003 K1200RS I had the rear seal replaced during the warranty period and my wife had the rear and output seal replaced on her 03 K1200RS.
    On one bike the clutch had to be replaced. On the other one there was very little oil on the clutch and they were able to clean it.
    Lee
    2016 R1200RS
    MOA # 30878
    Past BMW Bikes: 2011 K1300S, 2003 K1200RS, 1991 K75S, 1987 K75T, 1984 R100RT

  8. #8
    Kein Nasebohrer RBEmerson's Avatar
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    Quote Originally Posted by 20774 View Post
    Welcome to the forum! Can you provide some further background? Are you first owner? How many miles on the bike...on the clutch?

    I wonder if the clutch is hydraulically actuated? Could this slave cylinder be acting up or low on fluid?
    Easy fix for that: bleed the system. If that fixes it, there you are.
    Some people are wise. Some people are otherwise.

  9. #9
    Debbie's Servant Lee's Avatar
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    Here's a pic showing the line for bleeding the clutch. You need to remove the grub screw in the end and install a bleeder.

    Lee
    2016 R1200RS
    MOA # 30878
    Past BMW Bikes: 2011 K1300S, 2003 K1200RS, 1991 K75S, 1987 K75T, 1984 R100RT

  10. #10
    Debbie's Servant Lee's Avatar
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    When the leak starts you will see a little oil at this seam, but not always.
    Attached Images Attached Images
    Lee
    2016 R1200RS
    MOA # 30878
    Past BMW Bikes: 2011 K1300S, 2003 K1200RS, 1991 K75S, 1987 K75T, 1984 R100RT

  11. #11

    Thanks

    Thanks for the info and pics. I'm currently in WI, I'll try bleeding the clutch and look for leaks when I get back to FL. If it is oil getting on the clutch, would the slippage get gradually worse, even if I baby it? I would like to ride it home to fix it! Lots easier than truck and trailer. Thanks, again.
    Ron
    2002 K1200RS, MOA# 17475
    2011 Zero S, 2001 Aprilia RST 1000, 1984 Yamaha FJ1100
    Past, BMW 1977 R100/7

  12. #12
    Debbie's Servant Lee's Avatar
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    Quote Originally Posted by MrKB View Post
    Thanks for the info and pics. I'm currently in WI, I'll try bleeding the clutch and look for leaks when I get back to FL. If it is oil getting on the clutch, would the slippage get gradually worse, even if I baby it? I would like to ride it home to fix it! Lots easier than truck and trailer. Thanks, again.
    If you do have a leak, you may be able to save the clutch by not riding home.
    Lee
    2016 R1200RS
    MOA # 30878
    Past BMW Bikes: 2011 K1300S, 2003 K1200RS, 1991 K75S, 1987 K75T, 1984 R100RT

  13. #13
    3 Red Bricks
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    Quote Originally Posted by MrKB View Post
    If it is oil getting on the clutch, would the slippage get gradually worse, even if I baby it?
    Yes.





    LONG MAY YOUR BRICK FLY!

    Ride Safe, Ride Far, Ride Often

    Lee Fulton Forum Moderator
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  14. #14
    Kein Nasebohrer RBEmerson's Avatar
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    If you fix the leak, probably it won't get worse. But I suspect that repair isn't happening in WI. I hope you can get a good deal on the trailer.
    Some people are wise. Some people are otherwise.

  15. #15
    Registered User 58058D's Avatar
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    While the rear main could be the most common culprit in 98Lee's experience (vastly more than mine), it is certainly not the only cause of a slipping clutch, especially a later K1200RS. I had the rear main go, the trans input seal go, etc on various K bikes over the years. Most recently for me was the Clutch Slave seal going bad while on the road (96,000 miles). This caused the clutch fluid to run down the rod that goes through the center of the trans from the back all the way to the center of the clutch basket. This fluid causes the trans input shaft seal to fail and the result is trans oil on the clutch as well as clutch fluid on the clutch and in the housing. Failure on the road is a pain as no matter how much clutch fluid (brake fluid) you add so you get a little clutch action, it has to go somewhere and that is into the trans and onto the clutch and the slippage just gets worse and worse. I know there are those out there that have ridden many miles after the slipping starts, but IF it is the clutch slave seal, do not chance it. I made it home 180 miles - BARELY.
    As noted above, regardless of the cause, you have to raise the frame off the engine/trans/driveline and pull the trans to get to the clutch. And, when you are in there, do all three seals. I do not have the tools, so I skipped the rear main and had the trans input seal done at the shop. The clutch slave seal was easy after I got the tranny back. Took me about 8 hours of sometimes physically hard work over a couple of weekends in my garage (when I had one). But it has held really well and the bike still runs fine at 137,000 miles.
    there are many DIY videos and threads out there here and on other forums.
    Jim Douglas '00 K1200RS >138,000 miles -- Black, 01/10/2000 to present
    Gone: White '09 K1300S sold @ 22k mi, Black '93 K1100RS traded @ 78k mi, Red '85 K100RS sold @ 44k mi, '06 Kaw 650R chrome yellow track bike sold http://www.seagullbb.com/

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