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My Shimano TX-31 is not lined up correctly. When I shift into 7th the chain comes off because the Derailer goes beyond the 7 sprocket. How do I adjust this? It is also causes a clicking sound when in 1 gear.

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Take a look at the diagram in this link, see the two screws identified as Number 3. http://techdocs.shimano.com/media/techdocs/content/cycle/EV/bikecomponents/RD/EV-RD-TX31-2753B_v1_m56577569830637983.pdf
You need to adjust both screws, since one adjusts how far in the derailer goes, and the other adjusts how far out it goes. Start with the bike in a mid-gear and turn one of them 1/4 turn. Check the result. Proceed by trial and error. Good luck. If you found this helpful, please vote. Al K

Posted on Sep 01, 2010

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1 Answer

My Shimano TX-31 is not lined up correctly. When I shift into 7th the chain comes off because the Derailer goes beyond the 7 sprocket. How do I adjust this? It is also causes a clicking sound when in 1...


There are two screws that limit how far the derailer travels in both directions. Yours is apparently traveling to far out, and not far enough in. See the diagram at the link below. The two screws are identified by number 3. You will need to adjust both of them. With the chain on an intermediate gear, try turning one of them them 1/4 turn, then check the result. You'll soon get it right. Good luck. If you found this useful, please vote

http://techdocs.shimano.com/media/techdocs/content/cycle/EV/bikecomponents/RD/EV-RD-TX31-2753B_v1_m56577569830637983.pdf

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i hope this helps
-matthew

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