Dave Larrington said:Attack grip shifts, operating Ultegra mechs. The rear one is fine and
you'd think that the front one, being fresh out of the box and still
using the factory cable, would be too. I put new ones on the
Speedmachine last year and they behaved admirably from the word "go".
Sorry, but this is going to seem a little bit like skule.
Consider fig.1:
http://www.bikepages.de/images/grip-shift_zahlen_gross.gif
OK, its a rear shifter, not a front one, but the principle is the same.
The cable is supposed to run in slot 3 (or "Dichtring zum Schutz vor
Schmutz" as the original German describes it). Sometimes this fails to
happen. In order to find out if this is what's wrong, you need to remove
the cable inner before any other disassembly. While you're doing this is
a good time to see if its stiff somewhere else along the line, as the
next bit is the bit you want to avoid if possible. If its difficult or
impossible to get the cable inner out of the shifter, then assembly 1
("Gehäuse des Schaltgriffes"😉 needs to be removed. This is usually the
cause of two things: panic at how clunky it is to remove, and further
panic when part number 6 ("Feder"😉 attempts to provide further evidence
for Newtonian physics being a good approximation of Murphy's law. Having
found part number 6 (left as an exercise for the reader), and
disentangled the cable from its incorrect but imaginative (for an
inanimate object) routing, the whole assembly goes back together in the
reverse order you took it apart (you may omit hiding part number 6 if
you so please).
HTH
Thanks to bikepages.de for providing (fair I hope) use of fig.1
JimP
--
Let's think the unthinkable, let's do the undoable, let's prepare to
grapple with the ineffable itself, and see if we may not eff it after
all. - DNA