What kit do you require to bleed the XT brakes? I read they are now "one way" bleeding...?
Worried I will buy the wrong kit for them. Also does mineral oil suffer from water absorbtion like Dot brake fluid?
Cheers for your help. 
Bike Forum
Shimano XT M785 - Brake bleeding?
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Posted 3 months ago #
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A bit of rubber tube is all you need to bleed the very similar Deore brakes - squeeze open close release repeat
Posted 3 months ago # -
I don't think mineral oil absorbs water - at least nowhere near as much as Dot5.1.
As for bleeding the brakes, you're supposed to buy a bleeding funnel. However a (non Luer lock) 20ml syringe jammed into the bleed port works just as well. Aside from that you need another syringe and some tubing.
Posted 3 months ago # -
You need the funnel too, I think you might just manage it without but it will make life a lot easier and your less likely to get air in.
Edit: Too slow
Posted 3 months ago # -
Tube available from Pets at home. Clicky
I also use the tomaso method. Very easy.
Edit; Another clicky
Posted 3 months ago # -
Thanks for the help. Have a good weekend
Posted 3 months ago # -
That 'Another clicky' link from Mulletus shows it to be oh so simple. I'll have to give that a go on my SLXs.
Posted 3 months ago # -
It's not a difficult process but it's an art to get a good bleed. I say art, but my success rate seems to suggest it's more like pot luck. On the third bleed I got it working really nicely, can't say what I did differently.
That youtube video has a few good tips though - I'm definitely going to try the olive-over-the-bleed-hose thing, when the tube pops off the bleed nipple it's very irritating.
Posted 3 months ago # -
That video is brilliant but what happens when you pull the syringe out of the lever end? I'm guessing it pi$$es everwhere and you screw the thingy back in?
Anyone have a link to the vid for shortening the hoses? My rear hose is stupidly long so I need to trim it down. I've got a spare olive and a silver thing (insert?). What else do I need - I've got the oil and a couple of syringes.
Posted 3 months ago # -
Have a search for the big thread on the xt brakes, someone did a nice picture guide. I got away without bleeding mine when I cut them down.
Posted 3 months ago # -
Thanks rwc. I've had a look but can't find that thread - there seem to be loads. Do the hoses just unscrew from the lever? Not taken the plastic cover off as I'm not sure what's under there!
Posted 3 months ago # -
Hi jruk, yep they just unscrew, but they've been nipped up pretty tight so I clamped mine on a pair of old bars to undo. The plastic covers on the hoses are just help keep mud and other crap out. If you're careful when you cut and don't swing the bits around you should get away with not having to bleed.
Here's the guide:
http://singletrackworld.com/forum/topic/psa-xt-m785-brakes/page/6
Thanks again to DezB for doing that.
Posted 3 months ago # -
Rickos - Member
That 'Another clicky' link from Mulletus shows it to be oh so simple. I'll have to give that a go on my SLXsWhere can those syringes be had? The one that screws into the lever, in particular?
Posted 3 months ago # -
They're just standard (?) syringes - I know they're a standard size for IV lines in hospitals - I think they're the same ones people buy from Vets. The plastic's fairly soft so it just deforms to the thread - if you're offered a choice though, "Luer lock" ones won't work.
Posted 3 months ago #
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