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Tiagra Rear Derailleur Won't Shift

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CheddarExpress Offline
New Member


Posts: 1
Joined: Feb 2014
Post: #1
Tiagra Rear Derailleur Won't Shift
So I have a trek 1000SL that I'm trying to get tuned up for ride the rockies this year. It has Sora triple shifters and everything else tiagra (9speed), and the rear derailleur won't shift up or down. When I use the shifter, it still gives and takes tension from the cable, which makes me think it must be a derailleur issue and not a shifter issue. Would getting new cables/housing fix this or do I need a new RD or a whole new gruppo?
Feb 19, 2014 09:39 AM
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nfmisso Offline
Veteran Member

San Jose, CA
Posts: 2,059
Joined: Jul 2010
Post: #2
RE: Tiagra Rear Derailleur Won't Shift
Insufficient information to provide an answer.

Did it use to work?

Remove your rear wheel, now try shifting the RD - does it move?
Disconnect the RD cable, now manually push the RD - does it move?

Nigel
Feb 19, 2014 10:23 AM
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Joe_W Offline
Veteran Member


Posts: 1,176
Joined: Jul 2009
Post: #3
RE: Tiagra Rear Derailleur Won't Shift
Check the cables for kinks, fraying, etc. Also make sure the clamping bolt is tightened at the RD.
Also (as Nigel suggested) : Does the RD move if you loosen the cable and push it by hand?
Feb 20, 2014 12:33 AM
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