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Shimano XT BR-M8000 Disc Brake £66.99 Delivered @ Chain Reaction
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Shimano XT BR-M8000 Disc Brake £66.99 Delivered @ Chain Reaction

£66.99 Free P&P FreeChain Reaction Cycles Deals
32
Posted 17th May
Left hand front brake lever and caliper (euro) normally front brake in UK is right hand. Parts for bikes very hard to buy at all right now, anything under rrp is good.
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Need to buy a hose to use it as a rear , not a good deal at all
I paid 55 pound 2 weeks ago from wiggle. Same company basically ! Good brake but voted cold for the price hike
Do any of you guys know if its possible to fix a leaking front brake without having to buy a new one? I picked up a used hybrid for commuting but the brake started to feel quite weak (I hadn't used it for a while) and there seems to be liquid on the brake itself.

Also, is there a cheaper alternative to the expensive, official shimano fluid?
Edited by: "endofdays" 17th May
Edited by: "nvl35" 17th May
nvl3517/05/2020 09:03

That would depend on where it’s leaking from and type of caliper. If it’s t …That would depend on where it’s leaking from and type of caliper. If it’s the hose connector it could be as simple as nipping the bolt up gently. If it’s seals inside the caliper I would replace example below tweekscycles.com/shimano-br-mt200-altus-disc-brake-caliper-madbrmt200frl/?istCompanyId=56f52ebf-49f3-492a-9cbb-cb6ab0fc1bf0&istFeedId=c2306de0-9ac7-40f5-b9fe-c99bd95845f7&istItemId=ipxwltttp&istBid=t&awc=6411_1589701883_557b430fe58e175474b056570208baf0&utm_source=Affiliate_Window&utm_medium=Direct+Linking&utm_campaign=518873


Thanks, I was told to check if it was the hose connector bt a friend, but unfortunately it wasn't. So I guess I have to replace it then? That's a shame.

So with shipping it's £14 plus whatever its going to cost for fluid? :/ The bike was only cheap, I new I should've just gone for one with regular brakes!
endofdays17/05/2020 08:45

Do any of you guys know if its possible to fix a leaking front brake …Do any of you guys know if its possible to fix a leaking front brake without having to buy a new one? I picked up a used hybrid for commuting but the brake started to feel quite weak (I hadn't used it for a while) and there seems to be liquid on the brake itself.Also, is there a cheaper alternative to the expensive, official shimano fluid?


If by brake you mean the Caliper/piston rather than the lever there are a few things you could check, but at the cost of buying fluid and new pads you may as well just buy a new brake. If it’s one of the cheaper end Shimano brakes I have had problems which I’ve fixed with a full strip down and careful cleaning of seal faces but this isn’t guaranteed and quite messy. I only use Shimano fluid
endofdays17/05/2020 08:45

Do any of you guys know if its possible to fix a leaking front brake …Do any of you guys know if its possible to fix a leaking front brake without having to buy a new one? I picked up a used hybrid for commuting but the brake started to feel quite weak (I hadn't used it for a while) and there seems to be liquid on the brake itself.Also, is there a cheaper alternative to the expensive, official shimano fluid?


Where is it leaking from? the lever or the caliper? Shimanos use a propriety mineral oil, and i've heard of people using baby oil as a substitute, however i personally woudn't; not because I think it wouldn't work but because brakes are the one part that your life literally relies on when riding a bike, so just dont cheap out on them IMO.
DaveJohnston-becf0.2433617/05/2020 08:30

I paid 55 pound 2 weeks ago from wiggle. Same company basically ! Good …I paid 55 pound 2 weeks ago from wiggle. Same company basically ! Good brake but voted cold for the price hike


I ordered the same ones but wiggle sent the wrong item. Got the enduro lever spec. Bout 4 miles long
michaeljb17/05/2020 09:22

Where is it leaking from? the lever or the caliper? Shimanos use a …Where is it leaking from? the lever or the caliper? Shimanos use a propriety mineral oil, and i've heard of people using baby oil as a substitute, however i personally woudn't; not because I think it wouldn't work but because brakes are the one part that your life literally relies on when riding a bike, so just dont cheap out on them IMO.

From the caliper
Heat from me, they are a bargain 🚴
endofdays17/05/2020 09:29

From the caliper


If its where the hose meets the banjo, then it could be the olive and barb (compression fitting) that needs replacing. If its where the banjo meets the caliper, then the oil o-rings could be worn or the banjo bolt is cross threaded. If its around the piston then the piston seals may be worn or the piston itself is cracked.

Non of them are to tricky to fix, but if its a piston problem then depending on the model of break shimano may not offer replacement parts, however you may be able to find 3rd party replacement parts on ebay for example.
endofdays17/05/2020 09:29

From the caliper


Also dont forget to clean off any oil contamination, on pads and rotors for example. If you need any help getting them fixed feel free to PM me
endofdays17/05/2020 08:45

Do any of you guys know if its possible to fix a leaking front brake …Do any of you guys know if its possible to fix a leaking front brake without having to buy a new one? I picked up a used hybrid for commuting but the brake started to feel quite weak (I hadn't used it for a while) and there seems to be liquid on the brake itself.Also, is there a cheaper alternative to the expensive, official shimano fluid?



Cheap alternative to Shimano fluid , I have used baby oil in the past to get me by.
endofdays17/05/2020 08:45

Do any of you guys know if its possible to fix a leaking front brake …Do any of you guys know if its possible to fix a leaking front brake without having to buy a new one? I picked up a used hybrid for commuting but the brake started to feel quite weak (I hadn't used it for a while) and there seems to be liquid on the brake itself.Also, is there a cheaper alternative to the expensive, official shimano fluid?

VSUKWizard17/05/2020 13:10

Cheap alternative to Shimano fluid , I have used baby oil in the past to …Cheap alternative to Shimano fluid , I have used baby oil in the past to get me by.


Was that in a ilunit at the end of its lifespan or did you end up flushing it out later with something more suitable?

I'm new to trying to fix bikes. It used to be my husbands territory but now it's either I fix them or I pay a lot of money for someone else to, so I'm trying to learn! I picked up a kit with some of the essential tools and so far, so good.
endofdays17/05/2020 13:30

Was that in a ilunit at the end of its lifespan or did you end up flushing …Was that in a ilunit at the end of its lifespan or did you end up flushing it out later with something more suitable? I'm new to trying to fix bikes. It used to be my husbands territory but now it's either I fix them or I pay a lot of money for someone else to, so I'm trying to learn! I picked up a kit with some of the essential tools and so far, so good.




Looking at an old photo it looks like a new build and would have been flushed with mineral break fluid. If I recall I planned on using motor DOT 4 or 5.1 fluidbut that destroys seals.
Well i just completed a lockdown bike build with this as the final part. Got a new slx rear right brake on ebay for £54 and now i got myself a badass euro-brakes hardtail with some proper firepower on the front disc.
endofdays17/05/2020 08:45

Do any of you guys know if its possible to fix a leaking front brake …Do any of you guys know if its possible to fix a leaking front brake without having to buy a new one? I picked up a used hybrid for commuting but the brake started to feel quite weak (I hadn't used it for a while) and there seems to be liquid on the brake itself.Also, is there a cheaper alternative to the expensive, official shimano fluid?


You can you baby oil. It’s effectively the same stuff but dyed
millsy400225/05/2020 12:28

You can you baby oil. It’s effectively the same stuff but dyed


I thought the viscosity was different, from what I've read?

Have you used it for any length of time in your brakes?
endofdays25/05/2020 12:36

I thought the viscosity was different, from what I've read? Have you used …I thought the viscosity was different, from what I've read? Have you used it for any length of time in your brakes?


Viscosity is marginally different. On YouTube Seths bike hacks has tested it for over a year in one of his hard tails with no noticeable difference. I would say it was fine
millsy400225/05/2020 12:38

Viscosity is marginally different. On YouTube Seths bike hacks has tested …Viscosity is marginally different. On YouTube Seths bike hacks has tested it for over a year in one of his hard tails with no noticeable difference. I would say it was fine


Okay thanks. And have you tried using it?
endofdays25/05/2020 12:40

Okay thanks. And have you tried using it?


Only for a few weeks or so, ran out of mineral oil mid service. Used Johnson’s as had loads lying around. Seems the same so far but haven’t done any hard rides
@nvl35@pswils@michaeljb@VSUKWizard@millsy4002

Thanks for your earlier suggestions guys. I gave the bike to my brother in law to have a look at and although he's never used hydraulic brakes, he's pretty good with most things mechanical and according to him, it's the pipe that's leaking. He said he bled the brakes with baby oil and had the front brake lever held lightly over night with a zip tie and the cable is dry as far as the nick, and wet after.

What's the cheapest way of sourcing a suitable cable? I'll bung him a couple of beers as he has the tools and is much more likely to get it fixed than me!

There's a little mark on it, I thought it was just the outer casing - you live and learn!
endofdays29/05/2020 10:37

@nvl35 @pswils @michaeljb @VSUKWizard @millsy4002 Thanks for your …@nvl35 @pswils @michaeljb @VSUKWizard @millsy4002 Thanks for your earlier suggestions guys. I gave the bike to my brother in law to have a look at and although he's never used hydraulic brakes, he's pretty good with most things mechanical and according to him, it's the pipe that's leaking. He said he bled the brakes with baby oil and had the front brake lever held lightly over night with a zip tie and the cable is dry as far as the nick, and wet after. What's the cheapest way of sourcing a suitable cable? I'll bung him a couple of beers as he has the tools and is much more likely to get it fixed than me!There's a little mark on it, I thought it was just the outer casing - you live and learn!


I would say eBay would be your best place, you will need a new hose, 2x barb and 2x olive. Good opportunity to change up the colour of your hose if you fancy something flashy
millsy400229/05/2020 10:41

I would say eBay would be your best place, you will need a new hose, 2x …I would say eBay would be your best place, you will need a new hose, 2x barb and 2x olive. Good opportunity to change up the colour of your hose if you fancy something flashy


Cheers, do you think this would do the job? As for colours? I think black will be just fine!

Next time, I'm sticking to rim brakes!
endofdays29/05/2020 11:04

Cheers, do you think this would do the job? As for colours? I think black …Cheers, do you think this would do the job? As for colours? I think black will be just fine!Next time, I'm sticking to rim brakes!


Looks about right, obviously dont blame me if not. Let us know how you get on.

Hydraulics are more hassle when they go wrong but out power rim brakes 8 days a week
millsy400229/05/2020 11:25

Looks about right, obviously dont blame me if not. Let us know how you get …Looks about right, obviously dont blame me if not. Let us know how you get on.Hydraulics are more hassle when they go wrong but out power rim brakes 8 days a week


Okay thanks - can anyone else shed any light on exactly what I need to check with regarding compatibility with these hoses?

As for power, it's fine if you're hurtling down a hillside, but on a hybrid, to me it's overkill. As long as I cleaned the rims and the pads the brakes on my old, trusty hybrid would bring me to a halt quick enough, even in the rain. Any more stopping power and the front wheel would've locked up and I'd have been sliding down the road or over the bars!
endofdays29/05/2020 11:29

Okay thanks - can anyone else shed any light on exactly what I need to …Okay thanks - can anyone else shed any light on exactly what I need to check with regarding compatibility with these hoses?As for power, it's fine if you're hurtling down a hillside, but on a hybrid, to me it's overkill. As long as I cleaned the rims and the pads the brakes on my old, trusty hybrid would bring me to a halt quick enough, even in the rain. Any more stopping power and the front wheel would've locked up and I'd have been sliding down the road or over the bars!


Did we ascertain what model of breaks you are running? Shimano have 2 common compression systems they use BH59 and BH90 depending on older or newer disc breaks, also are they straight fitting or banjo?
michaeljb29/05/2020 11:39

Did we ascertain what model of breaks you are running? Shimano have 2 …Did we ascertain what model of breaks you are running? Shimano have 2 common compression systems they use BH59 and BH90 depending on older or newer disc breaks, also are they straight fitting or banjo?


Very good question! The only banjo's I know have strings I asked and he said, no, it's not a banjo 40909868-msKB3.jpgThe model of the front brake is br-m486 and the bike is a Carrera Subway Eight (I bought it used so I can't say which year, sorry)
endofdays29/05/2020 11:53

Very good question! The only banjo's I know have strings I asked and …Very good question! The only banjo's I know have strings I asked and he said, no, it's not a banjo [Image] The model of the front brake is br-m486 and the bike is a Carrera Subway Eight (I bought it used so I can't say which year, sorry)


Thats a straight fit BH59 style, so that kit on ebay you linked above should be fine
michaeljb29/05/2020 12:07

Thats a straight fit BH59 style, so that kit on ebay you linked above …Thats a straight fit BH59 style, so that kit on ebay you linked above should be fine


Perfect! Thanks a lot for the knowledge! Can you please recommend a good site for walk through's when it comes to bike repair and one for general bike info - maybe a forum?
endofdays29/05/2020 12:13

Perfect! Thanks a lot for the knowledge! Can you please recommend a good …Perfect! Thanks a lot for the knowledge! Can you please recommend a good site for walk through's when it comes to bike repair and one for general bike info - maybe a forum?


Personally I can't, I'm not a member on any of the forums myself, most of what I know about bikes (which ain't much) I learnt hanging around bike shops when i was a kid, way back when. For keeping up to date with new bike tech i normally just watch a few bike related youtube channels like GMBN tech, Pinkbike, GCN and ParkTools. Many of those channels also have their own forums as well.
endofdays29/05/2020 12:13

Perfect! Thanks a lot for the knowledge! Can you please recommend a good …Perfect! Thanks a lot for the knowledge! Can you please recommend a good site for walk through's when it comes to bike repair and one for general bike info - maybe a forum?


YouTube is your friend in this instance. Most big brands have tear down/fixing videos. Park tools, all suspension manufacturers etc. Any oddities will no doubt have been experienced by forums like single track, Mbr etc. There’s a lot of American stuff out there but it’s still relevant because of the prominent bike manufacturers.
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