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Gear shifting issues

Old 06-25-23, 04:19 AM
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Gear shifting issues

Hello all.

Iíve got an issue with my shimano gear shifters on my specialized mountain bike. Itís got the rapid fire shifters.

When shifting down from 9 there is full tension until you get to 6 then the lever loses all tension and wonít go any further down. there doesnít seem to be any bite there at all.

does anyone have any suggestions on what this could be and how to fix it please?
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Old 06-25-23, 06:36 AM
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Start with disconnecting the cable, then click your shifter through all the gears both directions a few times. Determine if you are getting the proper # of clicks. Report back.
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Old 06-25-23, 07:06 AM
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Thanks for the help.

when connect I get a click at 9,8,7,6 and nothing thereafter.

When disconnected I get 9,8,7 and nothing thereafter.

hope that helps
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Old 06-25-23, 07:22 AM
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OK, now try it while pulling lightly on the cable, just enough to tension it slightly. You should feel it moving as you shift. If that doesn't change anything, spray WD 40 into the shifter and click it a bunch. If that does nothing replace the shifter.

Last edited by shelbyfv; 06-25-23 at 07:27 AM.
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Old 06-25-23, 09:11 AM
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Thank you! All it took was a bit of WD40!! How didnít I think of that before haha
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Old 06-25-23, 11:50 AM
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Good job!
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Old 06-25-23, 01:19 PM
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Originally Posted by BikeRepairs12
Thank you! All it took was a bit of WD40!! How didnít I think of that before haha
be aware that penetrant oils turn STICKY when they dry up... and what you did was soften old grease in the shifter..

so.. the problem will return after a while,and be somewhat worse...

the best thing is to use penetrant, then use high pressure air to remove the old grease,then apply some LIGHT WEIGHT grease to the Shifter in certain locations... Shimano sells the special grease for this task. your local LBS should be able to obtain it for you,or you can find it online. GET THE CORRECT GREASE or you will not be happy with the results. Automotive axle grease is NOT appropriate, nor is spray-on lithium grease

PS.. what was sticking was a spring loaded pawl that holds the Cable reel in place after a "Shift"... it became so sticky that it wouldn't snap freely into the notches on the reel... it usually hides under another plate-like part and is usually hard to see.

Last edited by maddog34; 06-25-23 at 01:30 PM.
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