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Shimano Ultegra Rear shifter won't catch when shifting down

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Shimano Ultegra Rear shifter won't catch when shifting down

Old 10-04-11, 11:34 AM
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Shimano Ultegra Rear shifter won't catch when shifting down

When I shift the large, right side Shimano Ultegra handle to shift down it doesn't catch. Sometimes it will catch for a few tries and then it won't for awhile.

What gives?

How do I repair?

Thanks.
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Old 10-04-11, 12:07 PM
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What gives is it sounds like you might have an old gunked up shifter. What has worked for me is a liberal spray down of WD40 inside the shifter. Use a lot, and wipe away as much as you can. Shift as you spray and if you're lucky, it will be good as new.
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Old 10-04-11, 01:01 PM
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Is it the shifter that isn't catching, or the derailler? If the latter, it could be the chain and rear cluster that are worn.
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Old 10-04-11, 01:08 PM
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+1 on what rydaddy said, Has worked for me more times than I can count
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Old 10-04-11, 03:11 PM
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Originally Posted by rydaddy
What gives is it sounds like you might have an old gunked up shifter. What has worked for me is a liberal spray down of WD40 inside the shifter. Use a lot, and wipe away as much as you can. Shift as you spray and if you're lucky, it will be good as new.
+1
This often cures your particular problem. Try it.
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Old 10-04-11, 04:45 PM
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It worked rdaddy!

Thanks everybody!
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Old 10-04-11, 08:01 PM
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Originally Posted by alanf
It worked rdaddy!

Thanks everybody!
Sweet!
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Old 10-04-11, 10:08 PM
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Originally Posted by rydaddy
What gives is it sounds like you might have an old gunked up shifter. What has worked for me is a liberal spray down of WD40 inside the shifter. Use a lot, and wipe away as much as you can. Shift as you spray and if you're lucky, it will be good as new.
+100. We should have a sticky for "semi-functional Shimano shifters".

Rydaddy, here's a better version of your avatar:

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