Results 1 to 7 of 7

Thread: clutch spline lube 2005 R1200RT

Hybrid View

  1. #1
    Registered User
    Join Date
    Sep 2009
    Posts
    13

    clutch spline lube 2005 R1200RT

    On a 2005 1200rt,why does the clutch splines have to be lubed,when our trucks have the same type clutch and never needs to be lubed. Thanks Gary

  2. #2
    Benchwrenching PGlaves's Avatar
    Join Date
    Oct 2003
    Location
    "Big Bend" TX
    Posts
    8,659
    Quote Originally Posted by GaryGatlin View Post
    On a 2005 1200rt,why does the clutch splines have to be lubed,when our trucks have the same type clutch and never needs to be lubed. Thanks Gary
    Because without periodic cleaning and lubrication the splines wear.

    Now as to why do the splines wear, that is a better question. Metalurgy maybe. Shorter smaller diameter splines maybe. Shape of the splines - less square cut, maybe.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://www.bigbend.net/users/glaves

  3. #3
    Cam Killer marchyman's Avatar
    Join Date
    Jun 2008
    Location
    SF Bay Area
    Posts
    3,442
    How many hexheads have had spline wear issues? I know of one bike that needed a new input shaft... the cause was thought to be a broken transmission mounting tab which put extra load on the transmission input shaft such that it wore at an angle.



    Beyond that I don't have any facts, just a general feeling that clutch/transmission input spline wear on hexheads is not the issue it was on earlier bikes.

  4. #4
    Survivor akbeemer's Avatar
    Join Date
    Jul 2007
    Location
    Land of the Big Sky
    Posts
    3,898
    What is the recommended service interval?
    Kevin Huddy
    Intrepid Incompetent
    Tm Pterodactyl MT Outpost

  5. #5
    Benchwrenching PGlaves's Avatar
    Join Date
    Oct 2003
    Location
    "Big Bend" TX
    Posts
    8,659
    Here we go again.

    BMW does not specify a required service interval for clutch spline lubes. They didn't on R1100s. Didn't on R1150s. Didn't on R1200s. They also didn't on the rear driveshaft splines on monolever classic K bikes, and those will disappear in 20K miles if not lubricated.

    Some spline wear can be traced to misalignment. That is usually easy to spot due to the short period to failure and the wear pattern. Shame on BMW. But I have also taken apart several bikes where the wear was straight along the splines and just wear.

    We were told by internet experts that the 1100s didn't need it. Balderdash.
    We were told by internet experts that the 1150s didn't need it. Worse balderdash because the spline is shorter and only partially engages.

    We are told that the 1200s don't need it. Time will tell for sure but if I had a 1200 I personally wouldn't believe it till I had taken a few apart and found unworn splines with grease still in place and no fretting corrosion.

    The last time somebody halfway convinced me I was wrong about a 40K mile interval I let a bike go 60K and it cost me almost $2,000 in parts and transmission work after I removed (and later reinstalled) the transmission and clutch. And that was on a bike that had absolutely no alignment problem whatsoever.

    As an aside, maybe, have you ever read Motorcyclist, or MCN or another publication when they do a comparison of scheduled service costs over 100,000 miles between different makes and models. It gives me a good guess why BMW might somehow fail to mention $4,000 or $5,000 worth of spline lube service when they do required maintenance schedules. Nah, that couldn't happen.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://www.bigbend.net/users/glaves

  6. #6
    Survivor akbeemer's Avatar
    Join Date
    Jul 2007
    Location
    Land of the Big Sky
    Posts
    3,898

    Talking

    Thank you.

    So Paul, what are you doing about 15,000 miles on my R1200R from now?
    Kevin Huddy
    Intrepid Incompetent
    Tm Pterodactyl MT Outpost

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •