Ultegra 6700 front shifter stuck

matt21

Hi all

Another week, another question! Took my cube agree out earlier and realised after a mile or so the front shifter had jammed. I've taken everything apart - new cable, thorough clean and re grease. Outers are fine too.
If I release the cable from the front mech and tension the cable by hand, it will shift up and down perfectly, but as soon as I reattach to the front mech it will shift up to the big ring but not back down. Anyone got any thoughts?

Actually scrub that! Now it has completely jammed - shifted up and wont release at all....

arlowood

Have a read through this thread - it relates to a triple front shifter(6703) but there may be clues for you to investigate on your problem. Seems that a small retaining nut that holds the mechanism in place can work loose causing it to jam up.

viewtopic.php?f=40004&t=12914428&p=18312184&hilit=jammed#p18237341

matt21

Thanks for that.
On closer inspection there's a bent spring over the ratchet pawl. The whole internal barrel also seems a bit loose. Are these parts replaceable or does anyone know if these can be serviced?

unixnerd

You can't get parts for Shimano levers and Shimano don't regard them as being serviceable. I managed to fix a damaged one once but it was no fun, there are a few vids on youtube that help. If you can't fix it try ebay for a used one.