Installing XT M785 brakes with 'through frame' brake lines

db3266

I'm newbie

I have a 2015 spec Whyte 801. It has Tektro Auriga (don't know which specific spec) brakes.
I was out for a ride yesterday and nearly went headlong into a gate because the rear brake only squealed when I applied it, there was no stopping power at all.

So, I'm considering a brake upgrade, it seems the best brakes are the XT M785's ?

Front is easy, bolt on install. But the rear brake lines go through my frame.

Does anyone have any installation tips for such a task? I guess I should try to mate the Shimano hose to the existing hose and then to pull the Shimano hose through the frame as I remove the old hose?

The Shimano hose will need cutting, do the M785's come with spare parts?

Also, will there be any compatibility issues fitting the levers next to Shimano Acera shifters?

Thanks

nicklouse

you should be able to feed a brake CABLE up the existing hose then remove the hose, then feed the new hose not the cable (which works as a guide) when new hose in place remove cable attach caliper or Lever assy. bleed.


but is sounds more like you have contaminated your current set up.

clean with IPA and replace pads and don't do what you did before to contaminate them.

db3266

I will be cleaning them with Muc-Off Brake cleaner to see if that sorts them out.
I'm not sure if I can source pads locally? Will try Cycles UK and Hallfords at the weekend. Do I need Tektro specific pads?

I was careful with the Muc-Off Bike Spray, but maybe some got on the disc?

Even so, the M785's look like a cracking set of brakes...

jimothy78

db3266 wrote:

Do I need Tektro specific pads?

they don't have to be Tektro branded, but they do have to be the right shape for Auriga brake callipers.
IIRC, that's the same shape as the older deore models (m515, m525, etc) as well as Clarks S2 and a handful of others.

start here: http://www.uberbikecomponents.com/search/auriga

or if Halfords is quicker for you: http://www.halfords.com/cycling/cycling ... ads-vx811c

Lookyhere

the SLXs are cheaper and identical aside from a bite point adjustment which is marginal at best, they are awesome brakes and easily the best thing I ve added to my bike.
the xt/slx brake sets come with an olive/hose insert to allow shortening of brake line (and/or swopping sides) from the reservoir end ONLY.
so you would feed the hose up from the caliper end of the frame.
If you do it the way Shimano say, you shouldn't need to bleed brakes.
2 sets of slx brakes would be about 90 from Bike discount.de

db3266

jimothy78 wrote:

db3266 wrote:

Do I need Tektro specific pads?

they don't have to be Tektro branded, but they do have to be the right shape for Auriga brake callipers.
IIRC, that's the same shape as the older deore models (m515, m525, etc) as well as Clarks S2 and a handful of others.

start here: http://www.uberbikecomponents.com/search/auriga

or if Halfords is quicker for you: http://www.halfords.com/cycling/cycling ... ads-vx811c

Thanks, they are in stock at my local Hallfords 8)

cooldad

Use this

nicklouse wrote:

clean with IPA and replace pads and don't do what you did before to contaminate them.

Not this

db3266 wrote:

I will be cleaning them with Muc-Off Brake cleaner to see if that sorts them out.

db3266

What is IPA and why not the Muc-Off cleaner?

db3266

This?

http://www.maplin.co.uk/p/isopropyl-alcohol-400ml-re79l

jimothy78

db3266 wrote:

This?

http://www.maplin.co.uk/p/isopropyl-alcohol-400ml-re79l

Yes, although you get a lot more for your money if you just buy a big bottle of IPA from amazon or similar

cooldad

Isopropyl Alcohol. Really cheap on Ebay and get the 99.9% pure. Cleans without leaving any residue. Brake cleaners often do.

db3266

thanks. I want it for the weekend, so will be getting it from Maplin.
http://www.maplin.co.uk/p/isopropyl-alc ... itre-re71n

swod1

db3266 wrote:

thanks. I want it for the weekend, so will be getting it from Maplin.
http://www.maplin.co.uk/p/isopropyl-alc ... itre-re71n

That's what I use a bit on a clean rag and wipe both sides rotor.

I do have some of the muc off brake cleaner, it works well on rotors but keep away from the pads, made an old test set crumble up. Even though it said it would rehydrate them.

What do people use to get mud off the brake pad?

cooldad

Water

Chunkers1980

and use.

The Rookie

Lookyhere wrote:

If you do it the way Shimano say, you shouldn't need to bleed brakes.

Having pushed a cable inner into it to act as a guide, really.....of course they will need bleeding!

Lookyhere

The Rookie wrote:

Lookyhere wrote:

If you do it the way Shimano say, you shouldn't need to bleed brakes.

Having pushed a cable inner into it to act as a guide, really.....of course they will need bleeding!

Did this on an internally routed mtb frame last year, there was no need to bleed, maybe I was lucky? but I didn't use any steel cable guide, just the old hoses.
when you push back the pistons with Shimano (as im sure you know) any trapped air is released, its in one of their tech docs too.
I will need to do this again, as the frame is cracked and will be a warranty replacement, so I ll find out how lucky I was wont I