I have had the shifters for about a year and they have only been used moderately on my road bike. I was changing gear prior to putting it on the turbo when the right long shift lever went 'slack'and it would not change gear any more when trying to move to easier gears on the rear cassette. It felt like the lever had reached the stop limit and there was no l,konger any audible click. Moving to harder gears with the small lever still worked fine.
At first I thought the cable may have snapped but this was still intact. After a lot of fiddling I decided to take the shifter off the bike completely. I then removed the rubber hood cover and the small cover plate on the underside of the shifter.
I took out the gear cable just to make sure it was not fouling anything up in the mechanism. I also gave it a good flush through with silicone spray as I know old grease and debris can cause problems.
Once clean I spent some time looking at the mechanism and found the following;
when the shifter is held upside down it seems to work properly and a small silver flange engages with the splined cog as you press the big lever across. It shifts up one gear at a time without problem and there is an audible click each time.
when the shifter is turned the right way up i.e as fitted on the bike, the small silver flange drops downwards slightly (as per photo-left of picture) and no longer engages the splined cog. The lever therefore just pushes right the way across instead of moving the gears one at a time. There is no audible click. I did try refitting the cover plate to see if this held the flange in place but no joy.
It seems like the silver flange should be under some kind of tension to hold it in place as gravity makes it fall downwards and away from the splined cog. I assumed maybe a small spring or something had broken. I therefore ordered a brand new shifter and found after fitting it to the bike the exact same thing happened.
Anyone else had the same problem or am I doing something wrong in the fitting process?
Photo attached showing silver flange on cog.