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Thread: R100RT 1990 clutch shaft lub.

  1. #1
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    R100RT 1990 clutch shaft lub.

    I have just returned from Fl with the bike on the back of our motorhome and now is the time to address the stcking clutch issue. What is the best lub to use on the spline shaft and should the transmison be removed completly? All the road grime from the trip back is now removed and some oil leaks will also have to be resolved.
    Thanks Bob

  2. #2
    Administrator 20774's Avatar
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    Bob -

    Another thread was started about the rear wheel splines...the answers there are applicable to your situation as well:

    http://www.bmwmoa.org/forum/showthre...-Lube-Question

    In a pinch, the transmission can be slid back, cleaned and lubed through the roughly 1" inch crack. But, it really should be done by removing the transmission for a thorough cleaning and inspection.

    A couple of sites that describe the pull-back-the-tranny approach:

    http://bmwmotorcycletech.info/inputsplinesthrowout.htm

    http://www.webbikeworld.com/t2/spline/
    Kurt -- Forum Administrator ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  3. #3
    Douglas Williams
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    honda has a good moly. Some folks like to add graphite and anti- seize. also check out moly from www.guarddogmolylubricants.com
    Doug
    Sent from a Galaxy, far, far away

  4. #4
    Day Dreaming ... happy wanderer's Avatar
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    Quote Originally Posted by 83014 View Post
    honda has a good moly. Some folks like to add graphite and anti- seize. also check out moly from www.guarddogmolylubricants.com
    Doug
    And this advice is from a guy who whips his RS tranny out in about 45 minutes. So he oughta know!
    MJM - BeeCeeBeemers Motorcycle Club Vancouver B.C.
    '81 R80G/S, '82 R100RS, '00 R1100RT

  5. #5
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    Work in progress

    I read in Snowbum's sight that some clutch push shafts were oversize and would tighten up when things got hot. Anyone had this promblem? Waiting on parts to change pushrod tubes seals to stop oil leaks on the motor. I have also removed the air into the exhaust system maybe this will help with the heat. Is it a good thing to remove the catalatic converter or would that not keep things cooler.
    Cheers Bob

  6. #6
    Administrator 20774's Avatar
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    Quote Originally Posted by Bob 1642 View Post
    Is it a good thing to remove the catalatic converter or would that not keep things cooler.
    Hmmm...no such thing on an Airhead!
    Kurt -- Forum Administrator ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  7. #7
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    Right you are it's the primary muffler. Would using stright pipes to replace it not keep some of the heat away from the trany when stuck in trafic?

  8. #8
    Administrator 20774's Avatar
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    Are you talking about the cross-over pipe? I can't see that would really contribute significantly to the heat of the transmission...the transmission is bolted to engine case and the clutch is sandwiched between...seems like that's where your heat is coming from. It's a debate about removing the cross-over pipe. BMW did it to improve general performance, especially the mid range torque as I recall. Getting rid of it will likely hurt some areas of performance but might help the top end...but not many of us spend that much time pushing the bike at the top end of RPM.
    Kurt -- Forum Administrator ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  9. #9
    not lost til out of gas 128521's Avatar
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    isn't Bob talking about the big box where the two pipes turn into one? I have seen a clean 2 into 1 where the pipe goes to a larger diameter, does this improve flow? or is it about looks?
    don't know where I'm going, but I'm making good time. 1990 R 100 GSPD, 2005 R 1200 GS

  10. #10
    Administrator 20774's Avatar
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    I'm not as familiar with the later bikes, but there is listed a "front muffler" part 18121452097 for the '90 R100RT. Certainly more than just a cross-over.
    Kurt -- Forum Administrator ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

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