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Thread: Camhead oil leak

  1. #1

    Camhead oil leak

    Our 2011 1200RT was leaking oil on the left side. I'm pretty sure it is the bolt to access the cam chain tensioner had loosened up, it's located right behind the throttle body. A week later the same thing happened on our 2012 1200GS. Both bikes I just took off the throttle body and tighten the bolt and all seems good now.
    Has anyone else experienced this? Is this a known problem?
    Dan
    GSMmotoRent.com
    8459 St. Hwy. 73
    Townsend, TN 37882
    865-448-6090

  2. #2
    Registered User wvpc's Avatar
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    No leaks for me at 35K miles. How many miles are on your R bikes?
    12 R1200 RT
    83 R100 RT

  3. #3
    Registered User wyman.winn's Avatar
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    Solvang, CA
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    zero leaks on my 2013 RT with 69080 miles as of this morning!

    and she stopped using any oil about 50000 miles ago...
    ~wyman~

    2015 S1000R - Duke - Black Storm Metallic
    2013 R1200RT - Sassy - Fluid Grey Metallic

  4. #4
    A bozo on the bus deilenberger's Avatar
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    Spring Lake NJ, USA
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    Actually rather common on the camhead R1200 engines. I suspect the automated torque driver was out of adjustment for a bit. When mine did this I used a torque wrench to tighten it - and it took a reasonable amount of force to reach the correct torque value. It hasn't leaked since. Be happy if it hasn't happened to your camhead - but don't be surprised if it does.
    Don Eilenberger http://www.eilenberger.net
    Spring Lk Heights NJ NJ Shore BMW Riders
    '12 R1200R - I love this bike!

  5. #5
    I had the same issue on my 2011 R1200GS. I tightened it up like you did and I have had no further problems.

    Dave McDougall

  6. #6
    I've seen it on some of the Camheads.

  7. #7
    Registered User
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    Yes, this is a common problem. Tightening the cam chain tensioner bolt fixes the problem.

  8. #8
    Thanks for the replies, good to know. Both our bikes had between 20 and 30K miles when this happened. Maybe Fritz's torque wrench was out of adjustment on this run!
    GSMmotoRent.com
    8459 St. Hwy. 73
    Townsend, TN 37882
    865-448-6090

  9. #9
    Ken ken e's Avatar
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    Jul 2006
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    Virginia
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    Oil was seeping at 1700 miles from the right tensioner when bike was purchased used. Turned into a drip soon after.
    Per the repair manual, tourqued to 45 Nm and has been dry since.
    I find it odd that the left tensioner has a sealing ring, but the right side does not.
    Ken E.
    2012 R1200RT
    '09 RT, '93 K75, '69 R60US and others long gone....

  10. #10
    BMWJean
    Join Date
    Aug 2009
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    Freedom, WI
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    R1200S Oil Leak

    Quote Originally Posted by ken e View Post
    Oil was seeping at 1700 miles from the right tensioner when bike was purchased used. Turned into a drip soon after.
    Per the repair manual, tourqued to 45 Nm and has been dry since.
    I find it odd that the left tensioner has a sealing ring, but the right side does not.
    Been noticing an oil leak on my 07 R1200S. It currently has about 8K miles and want to check the tensioners per these posts.
    Anyone have pictures of the bolt locations? Many thanks in advance...
    1978 BMW R100S- My current money pit...uh, project.
    2007 R1200S
    1990 BMW 325is
    2007 Z4 M Coupe

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