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  1. #1

    1250 maintenance questions?

    does anyone know yet if the procedures for adjusting the valves and checking cam timing is the same for the shiftcam motor as the 1200w motor? And will my cam tensioning tool, tdc tool and the cam timing tool from my 2015 work on the new motor? Also are the service intervals the same ? I plan to buy a new r1250rt in about a year and am curious to learn if i will still be able to do my own service.Thanks

  2. #2
    I have no idea as to the specific answers to your question, but would also venture that even if the procedure is different, if you can read the instructions for your current bike and do the maintenance then you will be able to read and/or see the instructions for the new bike and do that too. Maybe a new tool will be required but valve clearances are valve clearances. Measure and get them right.
    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://web.bigbend.net/~glaves/

  3. #3
    Registered User LFarling's Avatar
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    TDC tool should defiantly work.

    The cam chain tool should also work.

    And I would think the jig for the cam ends should work also.

    I been thinking about this and I think the cam returns and sits at the lower lift side of the dual cam profile. I also think the base circle for both cam profiles are the same only the lobe area would change and they do not come into play on valve checks as you are on the base circle of the cam to measure.

    I am thinking they will work but as has been reported the cam chain tensioner is not obtainable.

    If someone near me gets a 1250 I would love to find out and check it for them.
    Lee
    2017.5 R 1200 GSW

  4. #4
    Addicted to curves azgman's Avatar
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    I am not so sure the cam chain tool for the 1200 will work on the 1250. They have gone to a 3 piece "flat" cam chain and that means that it is likely the cam chain tension is different.
    MOA #107139
    RA #28511

  5. #5
    MOA #24991 Pauls1150's Avatar
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    Just a wag, but I agree that the tension is different; also, while the base circle has to be the same, would they actually wear at identical rates? Fer now (with zero experience on these), I'd say check both places and adjust the tighter one for correct clearance.

  6. #6
    Registered User pappy35's Avatar
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    Another WAG: The base circle area sees no load due to the clearance. When the bike is hot it close up a lot but it should never be in contact while running. So, no load means no wear to the cam at that location. Knowing that, if/when I own one, I'd probably still check it at both positions , assuming of course that it can be easily moved, because I can be anal about such things.
    '13 R1200RT 90th Anniversary Edition

  7. #7
    Registered User LFarling's Avatar
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    Quote Originally Posted by azgman View Post
    I am not so sure the cam chain tool for the 1200 will work on the 1250. They have gone to a 3 piece "flat" cam chain and that means that it is likely the cam chain tension is different.
    Maybe but I doubt it.

    I would bet the silver spacer would/could change to adjust for that if it did change. Make the spacer longer more tension, shorter less. I do not think the style of chain will make any difference at all.

    Now if the cam sprockets changed in size or the cam chain sprocket changed then yes it may have changed.

    Also I see no way the cam base circle will change from one cam lobe profile to the other. It just can not do that and keep the valve to shim space the same.

    Like I say would love to get to a new one and at least crack it and see what is what. I believe the tools will work. Just looking and comparing cam chain tensioners would be a little insight.
    Lee
    2017.5 R 1200 GSW

  8. #8
    Addicted to curves azgman's Avatar
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    I don't understand how the spacer would change the tension. You turn the cam chain tool until it slips at its preset torque value. Please 'splain this to me!
    MOA #107139
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