Shimano Ultegra R8020 Hydraulic Lever Strip Down
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- Опубликовано: 20 окт 2024
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Thanks for watching.
I like this video - I had a broken carbon blade but managed to find a used one where the shifter mech was toast, so I replaced just the front half from the brake lever pivot forward. Someone asked a question about how to remove the brake lever pivot pin. Like the video shows, some have a c-clip. On the RS-685 hydraulic levers, there is no c-clip. Just tap the pin out from the tapered end. The springs that provide the back lever return keep tension on the pivot pin. Getting the springs back in when you push the pivot pin back through is hard. I recommend using a tiny electronics screwdriver with a bit of a concave on the flat (I filed it that way) to push the spring down and smaller diameter pin to hold the spring in place while tapping the pivot pin back in. It took a few tries... hope this helps.
Do you know whether a R8000 blade would fit and match a R8020 shifter?
No completely different!
I’d like to give you a huge Thank You. The opposite threaded silver bolt on the inside (holding the mechanism together) had rattled loose. Managed to threadloc in tight. Was looking down the barrel at a replacement, they are expensive and not so accessible right now. Got it fixed because of your video. Cheers 🙏
this is the best youtube channel ever
Thank you! This answered my question from your other video, super clear explanation!
Hi. Any chance you can do a similar video for r8070 r9170 di2 shift and hydro brake levers? Thanks.
Thanks for the videos! You’ve given me the confidence to maintain my own bikes. I’ve got a reservoir problem on a 6 month old lever. Have you found a solution to replacing the bladder? Or is it a new lever? Cheers
Thank you, I do have a bit of weeping oil and a hole in the bladder so this is very useful.
I'm having the same problem, how did you end up fixing your brake lever?
Man, you are the best!
Hi thanks for this video, it means I 'think' I can repair my Shimano Tiagra right side lever, as the gears are no longer changing. I have managed to take the hood/cover and the unit cover off, to see the inner parts. It seems the little 'ratchet' clip that goes onto each cog on the gear changing mechanism has lost it's elasticity. I undid the circlip nut, strangely on the Tiagra it is counterclock-wise or 'lefty loosey' as my kids would say :-) I was trying clockwise as per your video and swearing thinking who the hell has done this up so tight and then just wondered...... and it did 🙂
Also to remove the little pin in front of the circlip nut, I just used a pair of pliers and it moved away very easily. The pliers won't work to push the pin back over the circlip nut, but I'll worry about that when it comes to it.
I've manged to source a 'spares only' right handed unit, where the hydraulic fluid reservoir has been cross threaded and no longer holds pressure, but I don't need that bit.
Fingers crossed I can repair it.
It is annoying as the loss of tension on the ratchet is clearly a default, yet Shimano don't offer a 'spare' or will cover it for replacement unit !
Oh well, I'm learning some new skills and will hopefully have a very broad smile on my face when I fix it, especially as Halfords did bugger all, apart from say 'it's broken mate you need a new lever unit, thats £150 please' Hmmmmmm I'm paying £40 for the 'spares' lever so hopefully saved myself £110 :-)
Excelente tutorial, detallado y de utilidad. Suscrito
Could one push 'crushed olive' our of the hose port from the shift lever side of the shifter? I'm trying to determine if whether I should attempt a teardown like this one to tap our the crushed olive or just call it dead and replace the whole shifter. Thanks!
Worst thing about working on these shifters is for a quick job I need 4 types of tools all doing the same job.. Torx keys, cross head screws, Allen keys and circlip pliers. There is no need for the little torx screws, circlip or cross head, just make them all Allen
Thanks for your great videos! Very helpful! The tamper torx screw visible at 4:44 got very loose in one of my shifters. Any idea how tight to screw them?
First off, thank you for this! You rock. Secondly, how would you go about cleaning the entire shift assembly? Mine is absolutely mucked. Can this be ultrasonic'd and re-greased or does more care need to be taken?
Great video. Do you have any idea where to get spare shifter mechanisms from, the unit you took out that holds the cable end etc? I've done a decent search but can't find them, maybe called something weird and wonderful!
Hi! ¿Did you find a replacement? Sadly I’m looking for the same thing!!!
Im looking too for spare parts
Hi. I have a missing spring in a R8020-R who holds a piece in place to go down on the shifts. There is no replacement, but there is also no R8020-R nor 105 equivalents in stock anywhere... :(
Do you know if the shifter mechanism of the R8020 lever is the same of the R8000? If so, maybe I can get a shifter R8000 and take that spring as spare part.
Thank you for the video! It was the only place I found showing the internals of the R8020.
What was your solution? Appears I have same problem with my R8020-R shifter mech - a spring sprung.
@@elinser At the end I got a new R8020-R :( I asked a mechanic first, and he asked Shimano, and they don´t sell the spring nor fix the mechanism for the R8020 (although apparently they do for R8000 or Di2)
@@naelblogger7976 Nael, thanks! Not the answer I wanted. I have a backup bike so that's buying me time (ultimately $) for the solution. Ugh!
@@elinser I know, it sucks. :( I wish you better luck!
i have brake fluid coming out from the hole (@11:17) on reservoir cover, what does this mean, torn bladder?
I am having trouble finding and removing the e clip. Any further details on that?
Hi Sir, I noticed that you have also crack in the hydraulic barrel cage, did you able to repair it? I also have some issue is it safe? May I know how did you managed to repair the crack? thanks
Awesome video! Are the paddle shifters (the one with the “Ultegra” letterings) capable of further disassembling? Thinking of powder coating my grx levers.
Any guidance on how to put brake handle back together? I'm stymied on how to keep all the pieces aligned and together.
I forced my left shifter into changing the gear causing the mechanism to fail, the left shifter makes cracking sounds, and with force does change to the big chain ring, my question to you is! Where can I buy just the mechanism, or I need a separate part ?
Again another very useful video, it’s my go to channel for repair issues. Similar to a previous question, I’m looking for a parts list for ultegra r8000 levers (rear mech lever) with hydraulic brakes. Just need a grey cable guide which the cable seems to run through, bike shop replaced cable and claimed the part was missing, cobbled together a bodge but the lever sticks from time to time and I’ve lost the positive feel from each index, any ideas? THANKS
Good guide thanks, have you come across r8020 shifters making a buzzing/rattle sound? My right hand shifter is doing this on roads which have a rougher surface, can't pin point what the cause is yet
Hello
I've watched all your videos on the R8050 and R8020 but my groupset is R8070 so di2 hydro disc. My question is can you strip the left shifter apart ? My shifter switch has broken so I've bought a second hand shifter thats perfect but the oil bleed screw thread is stripped meaning i need to pull it apart so i can switch over the switch and wire to my existing shifter. I've tried to remove the circlip holding the lever pin but there isn't enough room to stick a hook type pin in there to prise off the circlip. Is there a special tool for that circlip and more importantly can the lever be dismantled in the first place ?
Your thoughts would be much appreciated
Hi riding in Spain from uk my lever piston dont go back properly leaving my brakes rubbing, and I have to keep oushing the lever back to stop it do you know a quick fix thanks
Hi, do r9120 and r8020 have the same body? Because I broke my R9120 bleed port, I'm planning to use the R8020 body and replace it with R9120 parts.
Is it also clockwise to remove the bolt on the right lever? Thanks, this is helpful
No, after chewing up that bolt and cursing on a R lever, I decided to try unscrewing counterclockwise (normal threading) and it came out easily. So only on the L lever is the bolt that requires circlip/snap ring pliers reverse threaded!
is there a possibility that when removing the mechanical shifter bit that an electronic switching bit can be substituted / hacked into the lever to work as a di2 / hydraulic lever.
Are the 7020 and 8020 bodies the same? Got a knackered housing that I want to swap with a 8020 housing with a snapped lever. Are they exchangeable? Thanks in advance for your advice!
i have a question, Is broke the hydraulic system in this shifter? how to repair this?
Hi thanks for all your videos they really help
Have you got a good web site where I can get all the spares we need for hydraulic brakes and calipers
Also I have just bought a mtb I'm a roadie trying the dark side. It has NX sram fitted. I normally just di2 is there a way to up grade
Cheers
David, Shimano don’t do a 12 speed Di2 mtb groupset, you can get Di2 in 11 speed which is the XT M8050!
Hello from Romania 👍
Do you think it is possible to replace the main frame?
Great Video. Do you think that those little o-rings on the piston can fail? It seems like I have a mysterious leak in that area. Is it possible to disassemble and replace those o-rings on the piston and re-assemble. Seems like it may be an extremely hard project. Any insight you can offer would be great!
A fluid leak usually comes from the bladder or a cracked housing due to over tightening hydraulic hose nut!
@@FreeToCycle Thanks. I am about 100% sure it is the piston seals. I'll tear into it and see if I can repair. Great video and wish you had the one putting it back together. :)
@@jimcochran7405 did you succeed? I think i got the Same Problem on at least 1 pair of stis. Thank you
@@jimcochran7405 i Managed to disassemble the Lever so the Piston Is free but i dont think that we can buy spare sealings for the piston
Good afternoon... I have a lever like that... And what happens to me is that the hydraulic fluid comes out of the front part of it.... Where could the fault be?
Is that reverse threaded bolt reverse on both shifters or just the left shifter?
Hello! I've been finding your videos really helpful! Any chance to do a comparison on the shifting mechanisms of the r7000 vs r7020? Or any mechanical vs hydraulic groupsets like the Ultegra. This would help a lot if ever I want to service a shifter from other shifters. Thanks!
I'd LOVE to know if you can put a 3x shifter mechanism from a left Tiagra 4703 brifter into a left Tiagra hydro 4720/4725 brifter.
Not possible!
I need to find replacement rubbers for the brake lever piston for st 8070 Can you please help me where to buy from ?????. Thanks
great video man! I just recently had one of these levers randomly lock up on me during a ride where it would only shift up and down between the two smallest rear cogs. Is there a common problem that you're aware of that might cause this problem?
I have the same issue as you around the same time frame, I have not been riding my bike because of that since then..
hello; could you tell me of the shifting mechanic part is the same as st r685 shifter?? many thx
Hi how do I get the piston out of the cylinder? Been going at it trying to get it out for ages
Спасибо!
I notice there is a crack on my shifter. The crack is where you connect the hydraulic cable and there is a little crew. There is still pressure and no leaks. Is it completely broken or just replace it immediately? Thank you
If it’s not leaking then there’s no need to replace the shifter!
Hi, Do you know if the left lever of a r8020 is compatible with the r8000 lever?
I broke the lever of my r8000 left shifter and a friend of mine has a spare r8020, so I wonder if I can just swap them.
Thank you in advance
No not compatible!
Can you use a Ultegra R8020 blade/levers in a R7020 body?
My R7020 levers paint have rubbed off in few months of turbo work compared to older bikes R8000’s levers which have survived years of turbo work and still spotless…. Don’t what hassle of changing my R7020’s as all I want is the more rebust R8020 Ultegra levers finish.
No!
@@FreeToCycle lots of internals difference then OK. Had always thought same construction between 105 - Dura Ace just different quality parts (bearings, bushes, lighter bodies & levers rather than anything else).
the hydro brake is lost compresion if you press slowly
I believe my bladder has a hole (since it's leaking through the - what I believe to be - the bleeding screw). Any solution to that? Or only warranty change? Thanks for your videos!
I'm having the same problem, how did you end up fixing your brake lever?
@@IsaacRC I had to find a spare shifter and take only the bladder part. Tried to super glued it and use some type of rubber glue and it worked on one side, but had to replace on the other! Only way I could fix it for good.
Thanks for sharing the video. @5:31 How did you take the lever pivot from the main body?
I need help here too! How do you get the pivot off and subsequently the lever blade?
@@bkmdanno22 read my comment...
Read my comment on how to do that.
Hi,
Is it possible, to replace a Ultegra 8070 too?
Hi thanks for all the content, it is really useful (Now running 11-40 cassette on 105 as you suggested!) My query is I managed to pull (left hand r7020) the main brake lever outwards about 1cm too far and now it sits slightly outward of where it used to. Almost like the stopper has moved/bent. For the moment I've glued a tiny rubber shim in, but if I removed the lever, would I be able to rectify do you think? - and if so - is it just a case of pushing the pin out (which the lever rotates around?
Hi Chris. I have the same situation but with my right hand lever, i.e. the main lever is 1cm further outboard than it is supposed to be! Did you find a solution to your problem that might help me with my problem? I've spent hours thinking and tinkering and am making no progress! Thanks in advance
@@danielfarrell14 Hi - and no sorry couldn't find a decent fix so still running with the lever sticking out. lol. Looking at the base of the lever, there appears to be a tiny silver metal pin which acts as a stopper, and I think that has been pushed in too far. I've not taken it apart yet to see if it can be pushed out from the other side. Good luck.
@@chrishayes8814 Thanks for your reply Chris, much appreciated. It's a real pain isn't it!?!? Amazing how half a centimetre can make so much difference LOL
how to convert a shimano grx st-rx810 2x11 left shifter to 1x11 and dropper seatpost - any ideas?
hello, do you believe i can replace the 10 speed mecanism of the 4700 tiagra hydraulic lever by the 11 speed mecanism of the r7020 right lever or r8020 which you show at 3.43? thanks
No not possible!
Anyone know if the 10x shifter body is the same size as the 11x? Might be looking to convert a Tiagra body to 11x.
You need a strong light source so we can see inside the darkness 💡
Sure can’t figure out how to get the piston out of an Ultegra 685, not get the darn springs installed to reassemble. Any videos or insight would be well appreciated Thank you!
Having same problem for reassembling unit. Piston will come free once you drive the thin pin out of the black plastic base.
I don't think the internals are different non the ultegra and dura ace in the disc versions.
The brake lever pivot pin on mine is always seeping fluid out onto the body. I think my reservoir piston might be leaking and seeping down onto pin? Basically a brand new bike barely ridden but out of warranty p. Any ideas? New lever assembly?
Yes complete new lever!
Did you Fix it? Regards
@@alexanderapostolidis5296 I’ve kept riding it. It hasn’t gotten worse. Maybe lessened. It’s not overfilled, checked that. Possible a piece of debris between the seal and bore. No way to even see up there. No drips or even any to show on a tissue pushed up there but invariably over time a slight sheen will appear around where the pin sits in the bore, leeching out etc. nothing to do but keep riding it right now because bike parts are super expensive hard to get etc I’ll keep riding it until it gets visibly worse.
Very interesting video but you should have put on gloves of a color other than black. The handle being black, it is sometimes difficult to see the parts. Thanks anyway.
The R8020 is the same as the GRX 810
Where can i find the diaphragm for r8020?
They are not available separately! If you have fluid coming out of the hole it doesn’t necessarily mean it has a hole in it. Strip the bladder out and check it over clean and refit. Sometimes the fluid comes out because the system is overfilled and the pads have been pushed back without removing the bleed cover first! The excess fluid has nowhere to go and vents through the bladder and out the hole.
@@FreeToCycle thanks for the break-down. What does the anti-tamper torx screw at the end of the cylinder do (in front of the bleed port screw)? Mine is missing, and I’m getting fluid leaking from the half-circle opening in the metal plate. No fluid from the air port though. LBS is working on getting a replacement torx screw. Thanks!
@@robeason9594 hi, did you manage to get this fixed? My shifter has the screw in place but oil is leaking from the small hole next to the screw when I squeeze the lever firmly.
@@08daveb, no. Best we (me and lbs) could come up with was a cracked reservoir. The bladder was intact. I ended up ordering a new shifter.
@@FreeToCycleIn my r7020 levers, the fluid comes out of the cylinder at the front of the lever (the circle with holes on the front of the lever). Does this mean that the piston is leaking and the lever is to be replaced?
Hi iv got shimano r7020 with a bladder leak do you know where I can get replacement
Unfortunately replacements are not available to purchase separately!
I also thought I had a hole in the bladder causing a leak, but after disassembling, cleaning, inspecting (no holes found) and carefully refitting the bladder the problem seems to have gone away. I think what may have happened is that the bladder seal got unseated when I pushed the caliper pistons back to fit new pads. Anyway this worth a try as it seems the bladder isn't available as a spare part (why not!), and it's cheaper than a new shifter!
Don't know if anybody will read this but here goes anyway ..... I sent a nice email to Shimano outlining my problem and requested that they send me a new bladder, which they did, so now the leak is fixed! A big thanks to Shimano for their excellent customer service! 👍
@@dtaylor4319 hi! Have same problem, hope to change this rubber seal too. Can you tell to wich e-mail adress you wrote to Shimano? It was local dealer or Shimano global?
@@dtaylor4319 I have same problems, either bladder or piston leak or both and haven't torn all the way into is yet. Like Yvgeny N I could use the contact you used for Shimano. I'm in the U.S. so wondering if you could share where you contacted them?