Reverse brake system bleed

Anyone other there ever do a reverse brake bleed on their bike? I will be rebuilding all of the calipers and master cylinders and flushing the lines on mine this weekend. Thought a reverse bleed would help get all the lines filled back up but with the linked system I'm not so sure. Thoughts?

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I think you'd do much better with a vacuum bleed to get everything started, that is what Mr Honda recommends, but all brake systems (including the LBS) have the ability for reverse flow from the calliper back to the master so what do I know. The SMC line does have some extra restrictions (have you ever tried to push the centre piston back in the rear calliper?) so reverse flow will be slow.

I struggled to get the SMC line bled even with a vacuum, and ended up bleeding at the PCV nipple by pushing the foot brake, then pressing and holding the SMC and releasing the PCV pressure then closing, then pressing the footbrake again to refill the SMC. And repeating. Easy with either three arms or a helper.

 

ive done it a few times in tough cases, not on a linked setup, works well just dont overflow the mc.

 

What would you be solving, other than pushing any potential gunk in the lines up to the master?

You could try something like filling the calipers and leaving that banjo cracked while the line fills from the master...but why?

 

That is a very good point. Calliper or slave cylinder pistons usually have gunk that accumulates in them as the lowest point in the system. Not sure I'd want to push that back into the lines.

 

Yeah, now that I think about it, reverse bleeding doesn't appear the way to go. Like stated before, I'm basically rebuilding the entire brake / clutch slave system on the bike which I just bought. Previous owner let it sit around for the past 5 years with no servicing to any fluids. I've never done a total rebuild like this. Been all over YouTube watching as much as I can before I start on it this weekend. Wish me luck!

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your cautious objection is way off base. the only time to use a reverse bleed is after alot of fluid is expelled in an attempt to bleed air out the regular way so crud has already been flushed out.