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Thread: Valve adjustment?

  1. #1
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    Valve adjustment?

    I don't have one but can someone tell me the procedure for adjusting the valves on the new engine? A condensed version would be fine. Just wondering and haven't seen it published. Thanks much.

  2. #2
    Cam Killer marchyman's Avatar
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    I think you have to remove the cams to get at the shims (adjusting plates according to the parts breakdown), but that is guesswork from looking at the engine pics.

  3. #3
    kindofblue reidhester's Avatar
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    Thumbs up Valve checks q 12k mi.

    Valve checks are every 12,000 mi. Here's a link to a google doc from advrider.com to the service schedule

    https://docs.google.com/file/d/0B9Dh...1zZWZLc3M/edit

    I'm not sure whether non-google users can access this though.

    Valves may well never have to be adjusted though because of the new design. The same seems to be true of the camhead GSs (08-12).

    And because it's fly by wire, there's no more throttle body adjustments!
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    Thanks and its great if it never had to be done - but - what if it did? Remove head covers, cams and insert shims???

  5. #5
    Cam Killer marchyman's Avatar
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    Remove valve cover. Measure. If out of spec calculate the needed change(s). Remove cam (that part is a guess) and remove current shim(s). Measure the shim(s) (maybe it's the marked size, maybe not -- assuming the shim is marked). Add in the calculated adjustment. Match that to the nearest standard size replacement shim. Buy (order) needed shims from your dealer. Replace old shim with new. Restore cam (assuming it was removed). Measure again to make sure you didn't screw up a calculation. Restore valve cover.

    Easy.

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    Just like the valve adjustment on a flying brick 4 valve K bike.

  7. #7
    MOA #24991 Pauls1150's Avatar
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    So the question remains unanswered. I've asked a few people, including a new owner, and nobody seems to really know "fer sure" yet...

    Shims? And what style? Setscrew & locknut? Slide the fingers over?

    Whoever gets inside - post a picture!!!

    "Never" is a pretty long time, very hard to accept... even hydraulic lifters may need a check once in awhile, especially if the oil is low-grade or not changed often enough...
    Last edited by Pauls1150; 05-26-2013 at 04:44 PM.

  8. #8
    Ponch ponch1's Avatar
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    Quote Originally Posted by Pauls1150 View Post
    So the question remains unanswered. I've asked a few people, including a new owner, and nobody seems to really know "fer sure" yet...

    Shims? And what style? Setscrew & locknut? Slide the fingers over?

    Whoever gets inside - post a picture!!!

    "Never" is a pretty long time, very hard to accept... even hydraulic lifters may need a check once in awhile, especially if the oil is low-grade or not changed often enough...

    From pictures, it looks a lot like a camhead. It has overhead cams with rockers and I imagine it uses shims.

    I've never had to check hydraulic lifters, not without having to replace them.
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  9. #9
    MOA #24991 Pauls1150's Avatar
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    Agreed, hydraulics are typically super-reliable and people take them for granted (in cars) and mostly ignore them.
    Their installation usually requires a specific "preload", maybe two turns of "compression" after the initial touch of the mating parts. If this isn't done correctly (and it's really not so very critical in a non-racing engine), it may wear faster or cause faster wear of the cam or followers, especially if the case-hardening was thin to begin with.
    Stock Harley hydraulic lifters got a bad rap for a long time because they'd collapse and spew bearing needles through the engine - very expensive if not caught immediately. ("What's that awful racket? I'll just spin it more and see if it quits.") Valve control improved when solid rods were installed, since they didn't need to spin up too high; occasional lash checks were accepted as the trade-off.
    Honda's Hawk 750 needed high-quality oil & frequent oil changes to keep the lifters reliable; otherwise it was a great motor.

  10. #10
    Ponch ponch1's Avatar
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    The Vulcan 1500/1600/1700/2000 have hydraulic lash and without drama.


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  11. #11
    MOA #24991 Pauls1150's Avatar
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    Good examples of how to do it, though they certainly don't spin like our engines.
    I haven't kept up with Kawi's developments; do their hydraulic valve trains live a long time?
    I've also expected Suzuki to come out with a good system, since they have a reputation of their bikes absorbing a beating and keeps on ticking.
    What do the big Yamaha Vees use?

  12. #12
    Ponch ponch1's Avatar
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    Quinton Grubbs did 260k miles on his 1500 nomad and I know another guy with a 2009 1700 voyager that has 175k miles. Lots of folks go over 100k miles with 1500/1600 nomads.


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  13. #13
    Ponch ponch1's Avatar
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    Big twin Harley's don't rev higher than vulcans


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  14. #14
    Registered User lkchris's Avatar
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    Kent Christensen
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  15. #15
    MOA #24991 Pauls1150's Avatar
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    Thanks, Kent! Now, do the followers slide sideways or does the cam have to be pulled...

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