The inner lever on my 7700 9speed is not returning all the way to its outer position. Is that the function of the really difficult spring located all the way under the mechanism. I have an old damaged shifter that does return but not sure about that last step. What do you think ?
3 days later? Yikes. Mine are working, but probably need a good cleaning. I wonder if I can flush with white lightning, dry out w/ air compressor, then shoot tri-flow, it will be okay.
I am up to the warning. My cable end is stuck so if I don't go further the lever is junk. But alas on mine, the ST7800 the Philips screw at the back, at 4:40 is surrounded by a "don't turn me" washer bent up all around the screw on eight sides, and the Philips screw itself appears to have been made out of a particularly soft metal so that the cross of the Philips head stripped rather than allow the screw to open. I think I used the right sized screw driver, and put all the force pushing my driver into the screw as I could manage but all the same, it was not turning and I went and stripped it. They really don't want me to get to the mechanism. Perhaps I could drill the screw out. Perhaps when the bolts are back on the nose, the Philips screw does not need to be there. I have a special reverse threaded drill tool designed to remove stripped screws. I will try that. Thanks for the video.
Just had the same problem with a stuck cable. I put the exposed cable end and clamped it in a vice then pulling hard tension on the cable I was able to click the shifter to zero and the cable pulled right out. Good luck.
@@johnmckenna6203 Alas the the standard method that you describe was not possible. Nor was I able to dismantle the assembly because the screw holding it together has a flanged washed designed to prevent it being undone. I have not given up. More modern brifters have a removable plate at the bottom, to allow removal of stuck cables. So I am think I will try to open a round hole in the bottom of the casing with a drill, and if I can thereby remove the cable, clise the he afterwards with a rubber bung.
The round hole in the bottom worked. I drilled a 4, 5 and 8mm hole, in the same place and by the time it was 8mm I could easily get the head of the cable out the bottom of the brifter. The hole does not seem to make a significant impact on the strength of the brifter. I am pretty sure I did not damage the workings in any way. I have ordered a 8mm blind rubber grommet to fill the hole. I may not be able to put this brifter back together but the other brifter that I have can be fixed in this way. The hole could be a little off centre towards the side which the cable comes in but it is not important.
Thank you Atboy for showing us that this task although relatively complex, just has to followed patiently step by step.
Thank you, this was really helpful. I managed to save a 9 speed shifter after watching this a few times.
Fantastic photography while performing such a tediuos task. Thank you!
The inner lever on my 7700 9speed is not returning all the way to its outer position. Is that the function of the really difficult spring located all the way under the mechanism. I have an old damaged shifter that does return but not sure about that last step. What do you think ?
3 days later? Yikes. Mine are working, but probably need a good cleaning. I wonder if I can flush with white lightning, dry out w/ air compressor, then shoot tri-flow, it will be okay.
I am up to the warning. My cable end is stuck so if I don't go further the lever is junk.
But alas on mine, the ST7800 the Philips screw at the back, at 4:40 is surrounded by a "don't turn me" washer bent up all around the screw on eight sides, and the Philips screw itself appears to have been made out of a particularly soft metal so that the cross of the Philips head stripped rather than allow the screw to open. I think I used the right sized screw driver, and put all the force pushing my driver into the screw as I could manage but all the same, it was not turning and I went and stripped it. They really don't want me to get to the mechanism.
Perhaps I could drill the screw out. Perhaps when the bolts are back on the nose, the Philips screw does not need to be there.
I have a special reverse threaded drill tool designed to remove stripped screws. I will try that.
Thanks for the video.
Just had the same problem with a stuck cable. I put the exposed cable end and clamped it in a vice then pulling hard tension on the cable I was able to click the shifter to zero and the cable pulled right out. Good luck.
@@johnmckenna6203 Alas the the standard method that you describe was not possible. Nor was I able to dismantle the assembly because the screw holding it together has a flanged washed designed to prevent it being undone.
I have not given up. More modern brifters have a removable plate at the bottom, to allow removal of stuck cables. So I am think I will try to open a round hole in the bottom of the casing with a drill, and if I can thereby remove the cable, clise the he afterwards with a rubber bung.
@@TimothyTakemoto Bummer yeah sounds like it's jammed good. Good luck.
The round hole in the bottom worked. I drilled a 4, 5 and 8mm hole, in the same place and by the time it was 8mm I could easily get the head of the cable out the bottom of the brifter. The hole does not seem to make a significant impact on the strength of the brifter. I am pretty sure I did not damage the workings in any way. I have ordered a 8mm blind rubber grommet to fill the hole. I may not be able to put this brifter back together but the other brifter that I have can be fixed in this way. The hole could be a little off centre towards the side which the cable comes in but it is not important.
@@TimothyTakemoto Awesome! You saved it. Good to know too.
Excellent video, thanks.