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I have this model on my bike. Works perfectly.

Dude fucking beuatigul

what do i do if my cassette spline housing is wobbly, the wheel and axle are fine. Just a wobbly cassette spline housing.

Дай Вам Бог здоровья! Без Вас не справился бы. 👍

Excellent, complete and clear. Thanks a lot for your work, time and explanations. Have a nice day :)

Hello and Thanks for all the Details. But where ist Part two. ?

That was a clear and thorough explanation. Thanks for the video.

Great video. Thank you very much

This is exactly my case, as I need to do the same. Special thanks for the explanation about correcting the center of the wheel!

very professional instruction... I have a jar of honey... let me know when you are in Poland... if not, maybe near Chicago... my friend also has bees there❤

Very detailed, step by step. One hint that I needed to apply on 'this bolt on the back' that you removed as first thing. Originally (when first removed) it's covered with this rubber adhesive and didn't wanted to get unscrewed as easy as on film. Important here - if the bolt turns around and does small 'clicking' stop pressing it down to unscrew - you need to pull it up gently while unscrewing - what is not intuitive. When whole interior that is here disassembled is removed - then I cleaned excessive old adhesive on that main bolt (with alcohol) and used WD-40 to grease it. Without it no way to get whole thing screwed back into original position. One more hint is that - since whole interior goes out easily - if it's only old grease that stops it from working. - WD-40 might be a good one to get i cleaned enough (no need for full disassembly). It's not recommended but in some cases may allow for quick fix.

A big THANK YOU! for the breakdown videos on the M091's. I picked up a nice Schwinn KOM S9 that's been living in a garage for the past 30 years and cleaned/greased the shifters following your excellent tutorial and they work perfectly now. Mine weren't as gummed up as your examples, so I caught a bit of luck there. Also, at 4:53, mine was exactly like yours with that small piece having some spring to it. Alright, time to hit the trails. Cheers.

Road bike 7 speed rear axle hub spacing is usually 126mm, not 135mm. Mountain bikes do start at 135mm for 7 speed, so this method will only work for mountain bikes.

Thank you so much! Can you do the shifter next?

I have an early 70s model Huret allvit, any tips for rebuild and/or tuning?

From where can i get new one ?

Thank you so much for the real time demonstration, this got me out of a jam.

Hey all I knsow is without this video I woulda thrown my whole shifter away . Even with the video I had such a hard time getting the last tension spring to hold down the lever and it took me honest to god 45 minutes just to do that. Thanks for the detailed video you’re a great lad “ from Canada , lots of love “

Wondering still worth to purchase a 2013 bike with 6770di2 right now buy a mechanic ty

Esses passadores não vem com as manetes ?

I wish I'd watched this before I took mine apart. Very helpful video. Thanks for uploading. To get that second spring on I used a nut that was big enough for the bolt to go through so that the vice had something flat to push against. But for anyone doing it also be careful when pushing that part onto the spring as I accidentally did it slightly askew and did a little damage to the stop guide thing on the main part.

Awesome video. Thanks for taking the time to develop such a thorough product. Daunting job, but with your simple process it makes it achievable. FYI, near the end of the rebuild you have to hold back the spring and you use an Allen key. I had a look to see what the special Shimano tool looks like - a thin metal straw. I used the inside of ball point pen, one made of metal. I cut off the ball point bit and it worked perfectly first time. Thanks again.

Great tutorial that mate👍

Thanks for making this helpful video. One question if I may? What is the purpose of the slot head screw on the parallelogram? It is concealed by the cable screw and it s hard to see without flexing the derailleur. It shows up @12:08. Just curious.

Well done. I thought you did a great job. I fixed a friends bike, I think it would have been a struggle without your help... Thank you

nicely explained. thanks!

Great video!

you are my hero!

Thank YOU❣️✅

This is a very helpful and thankful complete video, when you have to put something together that some turt disassembled. Thankyou, a thousand times.

Thanks to this video, I managed to save my st7801........ not exactly the same but couldn't find any for the 7801 that showed these internals..... this 105 turns out to be very similar and helped me work out the main order of assembly needed - especially the springs. Now managed to get the 7801 back to working order saving more than a few pounds. Cheers 👍🫡

*Hello, I have the same transmission, 9 gears, 11-46 teeth, will it work?*

Thanks so much for this. With mine, the top screw that holds it to the lever housing fell out while riding. I put it back together and it all seems to work OK, but the shifter doesn't stay in position- it always jumps back down to the smallest sprocket. I've taken the lower cover off and removed the mech from the lever housing and it looks like everything is together correctly. The main (outer) pawl looks to be doing what it should, but I can't see how the mechanism is meant to stay at the set point (in the selected gear)- is it those inner pawls that handle this?

I have the same model in the same color with the same equipment. Can you tell me the size of the bottom bracket insert? I would like to replace it.

Bro that fucking small thing does not go in lmao. The circular clip

Do you recall what model of RD you used as the donor for the cage replacement? Looking to do the same for my RD-6770. Love your videos!

Fantastic vid 👍 🇬🇧 i always forget what goes where but witg this awesome video I'm well sorted 👍

Actually it helped me to service my own Shimano Deore. It is in better shape even it has 15 years ;) Cheers and gl for you man :D

Thanks you bro nice video ❤

Thank you for this. I agonized over installation of the brake lever spring for hours and then a miracle occurred and the spring finally seated properly. You could have knocked me over with a feather. Thanks again.

Hi mate, massive thanks for uploading this video. I just backed the screw out of the derailleur cage and lost all tension and was clueless as to how to put it back together until I saw this. Cheers!

Thank you so much for this excellent video! You provided great views and explanation and it gave me the courage to disassemble the shifter. Grease became sticky and after cleaning and relubricating with thin grease everything worked as a charm again. :-)

I've been co stipulating moving from a 3x7 to 1x11, thanks for the info.

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.

How do y'all use thie shifter?

Any chance you might know where to find replacement hoods for these? Thank you

great job thank you ! These rapidfire "push push" was made only in 1991 if I remember correctly

Thanks for this and part 2! Just a note, for others - I'm finding that if I torque the final nut down too much, the return arm doesn't function. I have to back off just a bit and then the mechanism works perfectly. The nut ends up setting perfectly level with the main frame bolt in the end, not below. I say this because it's barely snug without the threadlock. Works well, just not what you'd expect.

Darn, was really hoping to see the dial disassembled :D I have this exact same model and (probably) the same problem with the dial. Was thinking of reverse engineering and resin-printing a replacement. Great shifters, 23 years they survived on my bike so far! Thanks!

Got mine fixed!! Thanks, this video is excellent!!! It's not so difficult with a little patience and Your instruction. For last spring i hook up Tiny wire and pull it all the way to lock in place. Also painted indicators with red nails lacquer. Looks like new!!!