How can I tell if my rear mech needs replacing?

craker

It's a ten yo deore LX 9 speed, replaced the jockey wheels and cables over the years, what else wears out? I wonder if it's not as rigid as it was, last time out I couldn't get the easy gear, got frustrated and ended up using more tactile techniques to get it to move to the right place (I bent it). :oops:

So ... how can I tell if it's worn out?

jairaj

I guess you replace it, when it no longer works to your satisfaction (and once did), even after a full service and tune up?

-liam-

Well if all that was wrong was you couldn't get it to shift to the big sprocket then either the cable tension needs adjusting or the screw stop needs a half a turn to allow the mech to shift over a little more, without ramming it into the spokes obviously

However, as you "Bent it" you probably now need either a new mech or a new hanger or both

nicklouse

it is worn out when the pivots have play in them.