Tiagra rear mech.

Skippy2309

Grr just set the bike up to swap some parts over gave the pedals a spin and the rear mechs miss shifting. it is giving me 10 clicks I get another click and movement at the smallest cog and its jumping around the middle of the cassette...

any advice is much appreciated.

keef66

Release all the clicks at the shifter and release the cable clamp at the mech. Then set it up from scratch as per Shimano's instructions.

Skippy2309

would that be to the top or bottom of the cassette. getting the instructions now. going to need to redo the front mech as I am changing from a compact to a standard. didnt think i would need a special tool to get that bleeding plastic screw out :roll: well its ordered now... so rebuilding has stalled.

Skippy2309

hold my hands up I am an idiot with the chain off i spun the cranks and heard a clicking was looking to find out where it was coming from as they spin really well (even tho I am replacing them) I had to know where it was coming from!

well i kinda forgot about the garmin cadence sensor :oops: 20minutes of fiddling and searching for it to be something like that :roll:

keef66

When you run out of down-clicks you should be on the smallest sprocket at the back with almost no tension in the cable

Proper tool for the plastic crank cap is vital: nothing else will fit properly, and it ensures you can't really overtighten it (and hence overload the bearings) when you install the LH crank.

Good point about the garmin sensor. I'll look out for that if ever I can afford one!