Shimano Saint M810 Bleeding

[Jake.]

I've opened the reservoir cap, pumped lever, topped it with mineral oil.

Rear brake pulls to bar before it starts to lock but can't support my body weight to do pedal kicks.

Front one pulls halfway to bar before it starts to lock and can support doing front wheel hops which is better but not ideal.

Any tips on bleeding?

And just to make sure, best way to bed in is to go down a long steep hill pumping the levers then putting water on the disc at the bottom and repeat?

Cheers.

[Blake]

put water on the disc first, to stop the possibility of warping

[Greetings]

I've opened the reservoir cap, pumped lever, topped it with mineral oil.

If that's what you're doing then it won't rid the brake of air.

You should pump the lever, then press it down and undo the bleed screw on the caliper. Fluid and air will come out. Tighten before you release the lever, repeat a few times, top the resevoir and you're done.

You'll also need to press a hose onto the bleed screw so you don't get fluid all over your disc and pads. Best if you actually remove the pads before bleeding the brake since you won't be able to clean the pads once those get contaminated by oil.

edit: The best way to bed a brake in is to keep the rotor wet or semi-dry while riding around and "dragging" the brake.

Edited December 11, 2013 by Greetings

[Jake.]

Cheers George will keep that in mind.

Thought this might be the case, there's a ball-end of an allen key stuck in the bleed bolt for the caliper. Will try get it out somehow and bleed it via this method.

[Jake.]

:/

[crilin202]

The bleed screw is the one on the left on that picture. No need to remove the allen key bit to bleed it

[Jake.]

Ah no way? Will get cracking on it later tonight and post the outcome.

[customrider-Rhys]

with them the best way to bleed it is like a maggie. from the bottom with a syringe, push it up from the caliper and into the resivour then as it fills up keep taking abit out till it comes through clean and bubbleless?

[FamilyBiker]

with them the best way to bleed it is like a maggie. from the bottom with a syringe, push it up from the caliper and into the resivour then as it fills up keep taking abit out till it comes through clean and bubbleless?

this.but after that the "push the lever,open bleed screw while holding it" thing.will get out trapped air in the caliper

Edited December 11, 2013 by FamilyBiker

[LEON]

with them the best way to bleed it is like a maggie. from the bottom with a syringe, push it up from the caliper and into the resivour then as it fills up keep taking abit out till it comes through clean and bubbleless?

I wouldn't bother. That's really impractical. Do it by the book. You bleed this from the lever out through the caliper.

I do the top up & lever pump thing, I've spent a good 15 minutes on it before just pulling the lever until every last bubble comes out, even a little bit of air will make it feel like shit.

But you wanna get a tube for the bleed nipple & bleed it like a motorbike brake, fluid in top, watch fluid come out the tube from the caliper until it's clear.

[Jake.]

Bled both, both are a bit better. Rear still pulls to lever although there appears to be no air inside, pads are very worn so that might be a large part of why it's doing that.

Did it via unscrewing bleed bolt in caliper and topping up reservoir.

Leon what do you mean by spending a good 15 minutes before pulling lever? You mean you fill the reservoir up, wait 15 minutes then pull lever, open caliper bleed bolt, tighten and repeat?

[LEON]

No, I basically pump the lever fast & slow for 15 minutes + with the cap off, it's not as good as a proper bleed but I haven't got a bit of tube for the bleed nipple yet.

Get every single little bubble out, some take forever to come up, but when they do you'll feel the difference.

[Perez]

Sometimes you need to lubricate the pistons, so they can move smoothly.

Edited December 12, 2013 by Perez

[haydon_peter]

This video shows the bleed technique you need to use.

Also tap the lever, caliper and along the hose with a spanner/allen key to dislodge any bubbles that might be trapped in the system.

[isitafox]

If you want something to hand whilst you do it then print this out http://techdocs.shimano.com/media/techdocs/content/cycle/SI/Bleeding_SI/SI_0037A/SI_0037A_002_EN_v1_m56577569830648123.PDF