- Shimano XT M785 Brakes – Full Flush
Quick question… last time I bled my XT brakes I noticed that the oil was getting pretty dark, so I figure it’s time to fully flush it out (especially as performance is all over the place currently).
What’s the best way to do it, gravity from the top and leave it a while, or force it from the caliper using a syringe?Posted 2 years agoEcky-ThumpMember
“dark” oil has usually been indicative of seal degradation in my experience.Posted 2 years ago
Probably easiest flushed bottom-to-top but it may only provide brief respite from the “all over the place” performance. If they’re still under warranty (2 years) I’d be tempted to warranty them.rocketmanMember
bottom-top then top-bottom http://www.epicbleedsolutions.com/blog/how-to-bleed-new-shimano-brakes/
ime steps 12 & 13 need repeating *many* timesPosted 2 years agovincienupSubscriber
^ this. I really don’t understand why everyone thinks a good bleed on Shimano is any easier to get or more likely to stay around than with Avid/SRAM. IME, if anything Avid/SRAM is actually less hassle to bleed well so long as you don’t try to pretend you’re doing Shimano or have ancient syringes with knackered seals.Posted 2 years agosillyoldmanSubscriber
As above – heat rather than seal degradation is the reason for blackened fluid IME.
Not saying that seal degradation is never the cause, but it’s certainly not the most common. I’ve bled brakes at DH races that look like they have squid ink in them. If this was due to seal degradation, there’d be no oil left in the system, as there would be no seals left!Posted 2 years ago
The topic ‘Shimano XT M785 Brakes – Full Flush’ is closed to new replies.