Diagnose & Fix Shimano Altus Shifters - Not Working / Sticky 

Thank you for making this video. It's very well done and i appreciate the time it took. Understanding design helps a lot. I partially disassembled left side 3 speed shifter of an Altus ST-CT90 and tried various chemicals and lubes until pawl loosened up. It worked! Fortunately, I didn't have to do a total breakdown because I could not figure out how to remove from cable. I learned that loosening cable from derailleur gave me room to work, but it was awkward. I needed to remove mechanism from case. Problem was, after reassembly, gear indictor was off. (I still have other side shifter to do.) Two questions 1. How do I detach cable from shifter so I can work work comfortably? 2. How do I reset indicator? Thanks again.

Simply the best way to fix old stuff !!

Thank you for video 😊

for a second I thought the spring had lost the springness...hahaha...old grease is a bitch...had the same problem with a pair of old shifters

Well done, must have been old hardened grease on the pawl shaft.

Man, thanks for the video! My basement stored 28 years old bike has the same problem. Cheers from Brazil!

For an internal part like that (one you wouldn't service that often as deeply, like shifters) I'd use gear oil for lubrication rather than a thinner or dry lubrication like silicon or white lithium grease spray.

NIce job, thanks.

They are called "c" clips. Next you're at the dentist ask him what he does with his old tools I have my late fathers who was a mechanic they help a lot for small situations. Keep up the good work😎

Nice vid, thanks. This is where a sonic cleaner would come in handy, if you can afford it.

Howd you open the wires

You are a genius 🔥⚡ thanks

Thanks, exactly the knowledge I needed right now :-)

I don’t own shifters like this.... totally chilled and just watched anyway.... zen

I have fixed a few like this however never took the pawl off. Maybe next time I will try it. I usually just use pb blaster on a q tip and most of the time that frees up the pawl.*EDIT* Not sure about using pb blaster anymore as it may damage the plastic. Switched over to wd40 and that seems to work...that or dish soap and a brush. I did remove the c clip from a shifter the other day however I put shifter in a ziploc gallon bag in case it went flying.

Anyone know how or where I can bloody buy a pair of these? Please help, thanks. or at least the rear control? Mine was wrecked.

Hey, thank you very much, this video was a great help for me

The little clip is a circlip, they come in four different types both internal and external. I have the exact same set of shifters and no matter what I did with them the seven speed slips! Maybe mine are worn out? But this style of shifter has this common problem, the grease oxidises over time and acts more like a glue. Have a think about this for an alternative to Phil Woods tenacious oil, miller oils semi fluid grease! Designed for vintage sealed gearboxes, thicker than oil so it doesn’t run but thinner than grease so you can put it in a little bottle and use like oil and it’s a fraction of the price of Phil Woods oil 😉

Soak in wd40 or gt85 whilst operating trigger. I had a spring pop out of its housing which was tricky to fix, but worked well in the end

14:55 is just like living in my house with 11/13 year old daughters 😂

Sounds like your neighbor was having fun with his bike. lol

Asa mechanic pretty much as soon as we saw these we knew what the issue was on the repair. This repair is great on a personal bike you want to keep original but a new set of shifters would be cheaper for a repair.

Ну даже если из за старой смазки, была нарушена работа переключения, то все равно интересно посмотреть🤗 спасибо

E clip. Spring is worn for pawl tension

Excelente trabajo!! Buen dia

Another great vid! Nice one! I learned a lot from that.

Good job

Nice, enjoyed thank you. What solvent do you recommend for these. 'Tenacious' oil appears to be expensive stuff. Is there a recommended alternative/type of grease that would be suitable ?

Отличный видос, привет из России!)

hey there. thanks for the vid! do you know if I can remove the plastic part even if it's still on the bike?

Very sticky

Tried it on 2 different shifters took them completely apart and broke both sets

Exiting

Thank you... helped a lot... to save my old changer...