Best way to re-lube a 6800 shifter that's not shifting well when below freezing?
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  1. #1
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    Best way to re-lube a 6800 shifter that's not shifting well when below freezing?

    My right shifter's, little lever, doesn't ''catch'' when you push it all the time when I commute to work in freezing conditions. If I bang on the shifter a few times, it works for a few shifts, then skips again.

    It works perfectly on the way home, on the trainer and on weekend rides (i.e. above freezing temperatures). It works perfectly for the first 10 minutes of the morning commute too.

    Is the ''best'' approach as shown in these videos, to use aerosol degreaser, then spray lube and finally slick honey with a brush?

    I'll do a stocktake of all my degreasers etc and see if I've got something. I know I've got aerosol TriFlow, and then WD40, but I don't have the White Lightening Clean Streak for the first step.

    It wouldn't be a problem if it wasn't for the morning commute. It's a roadbike that is a little dirty, but it's not a cross bike or anything, so I can't imagine there's a ton of stuff in there after approx 3000 miles (of which maybe 2000 miles are indoors).

    Thanks

    (I've googled this, but can't find what i'm after. So many are for completely gummed up shifters, not ones that are not too bad like my situation).

    https://www.youtube.com/watch?v=nwJhi7F671U

    https://www.youtube.com/watch?v=9657OoOY3oE

  2. #2
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    Going out on a limb here, are you sure this is an issue with the shifter?

    I'm going to guess that since you are wearing gloves in cold weather, you are inadvertently hitting both the small and large lever at the same time. When you do that, the levers move in all the way and don't shift.

    Am I correct?
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  3. #3
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    have experienced the same thing with both Shimano Ultegra 6600 and DA 7800 groups.

    they shift flawlessly in warm weather, but once the temp drops significantly, got some hesitation when using the shifter for the RD.

    simply flushing with WD40 has usually improved the situation.
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  4. #4
    .je
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    I had an issue similar to yours. Light lube helped for a little while.

    https://forums.roadbikereview.com/co...ft-314443.html

  5. #5
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    Quote Originally Posted by StillKeen View Post
    My right shifter's, little lever, doesn't ''catch'' when you push it all the time when I commute to work in freezing conditions. If I bang on the shifter a few times, it works for a few shifts, then skips again.

    It works perfectly on the way home, on the trainer and on weekend rides (i.e. above freezing temperatures). It works perfectly for the first 10 minutes of the morning commute too.

    Is the ''best'' approach as shown in these videos, to use aerosol degreaser, then spray lube and finally slick honey with a brush?

    I'll do a stocktake of all my degreasers etc and see if I've got something. I know I've got aerosol TriFlow, and then WD40, but I don't have the White Lightening Clean Streak for the first step.

    It wouldn't be a problem if it wasn't for the morning commute. It's a roadbike that is a little dirty, but it's not a cross bike or anything, so I can't imagine there's a ton of stuff in there after approx 3000 miles (of which maybe 2000 miles are indoors).
    I would recommend shooting something like TriFlow in there. Not as much "flushing power" as degreaser or WD 40, but leaves behind a pretty good lightweight lube. Be sure to work the shifter as you are doing this so as to mix the grease with the thinner lube in the TriFlow. Do it enough so that some of the thinned grease dripps out. Wipe thoroughly and you'll probably have some dripping lube for a couple of days that will require you to keep wiping.

  6. #6
    'brifter' is a lame word.
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    ^This^ Do NOT take anything apart. The grease that Shimano use when they built the shifter gets old and sticky. Loosen it up a little and spray some light inside when you're done. You'll have to do this every few months most likely but the shifters rarely 'break'.
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  7. #7
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    Quote Originally Posted by Kerry Irons View Post
    I would recommend shooting something like TriFlow in there. Not as much "flushing power" as degreaser or WD 40, but leaves behind a pretty good lightweight lube. Be sure to work the shifter as you are doing this so as to mix the grease with the thinner lube in the TriFlow. Do it enough so that some of the thinned grease dripps out. Wipe thoroughly and you'll probably have some dripping lube for a couple of days that will require you to keep wiping.
    Thanks, I'll go for that. I wasnt so keen on the youtubes that said to degrease when it's not that dirty/old etc. I'm due a bar tape re-wrap, so will do that at the same time to make sure I don't end up with greased bar tape.

    Thanks

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