ST-M900 shifter / brake lever units, a bit tatty

gmtfd

Devout Dirtbag
I'm just wondering what people think these are worth? The right hand shifter (the one which is missing a cover) shifts up OK, but if you press the release lever it dumps all the gears in one go. The left hand shifter works fine but the shift action is not very clicky.
 

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what happens is that the old grease inside the mechanism dries up into a hard glue-like paste, messing the ability of the mechanism t operate properly.

clean the internals well by flushing with a spray like WD-40; let drip dry; then lube with a very light lubricant and they'll likely snap right back into a crisply operating set.
 
k-rod":3lxbxkdn said:
what happens is that the old grease inside the mechanism dries up into a hard glue-like paste, messing the ability of the mechanism t operate properly.

clean the internals well by flushing with a spray like WD-40; let drip dry; then lube with a very light lubricant and they'll likely snap right back into a crisply operating set.

Yep, did this myself last week with some old Alivio shifters which were sticking. Sprayed with a load of GT85 and left overnight. The next day they were fine.
 
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