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Reverse bleed question

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Old Feb 22, 2018 | 01:12 PM
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Default Reverse bleed question

Hi all
Just going to reverse bleed the brakes on my ultra. I have seen all the youtube vids etc but how do you do the “other” front caliper ?
They only ever mention one caliper but surely you need to get the old oil out of both sides.

Thsnks all.
Rowle uk
 
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Old Feb 22, 2018 | 01:19 PM
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Funny you asked this question, I'm going to flush mine in the next couple weeks and came across this vid on reverse bleeding, he shows you how to do dual calipers. Seems simple enough.


rk classic.
 
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Old Feb 22, 2018 | 02:13 PM
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Hi RK classic,
Simple then !
Thank you for the video, i must have missed that one.

Rowle uk
 
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Old Feb 22, 2018 | 02:42 PM
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Why would he leave that nasty old brake fluid in the master cylinder? Seems to me he should have sucked it out with his syringe.
 
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Old Feb 22, 2018 | 02:51 PM
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Originally Posted by slang
Why would he leave that nasty old brake fluid in the master cylinder? Seems to me he should have sucked it out with his syringe.
I think he did at the beginning before the start. But you are correct. In this case it would have been necessary to have removed it again at the end and then pumped up again from that last caliper. He just does not mention it. Obviously, the master looked empty when he started. At the end, it did appear it had the lines and two dirty calipers left in master that he referred to topping off with.
 

Last edited by Jackie Paper; Feb 22, 2018 at 02:54 PM.
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Old Feb 22, 2018 | 03:42 PM
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Always start at the furthest brake caliper from the master cylinder then next furthest then next then next until you have all done.
 
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Old Feb 22, 2018 | 04:53 PM
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Originally Posted by rowle
Hi RK classic,
Simple then !
Thank you for the video, i must have missed that one.

Rowle uk
Can this be done with the Russell Speed Bleeders??
 
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Old Feb 22, 2018 | 05:30 PM
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Originally Posted by Cpl Ed
Can this be done with the Russell Speed Bleeders??
Speed bleeders have a one way valve. Therefore, you would not be able to push fluid the opposite way through the bleeder.
 
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Old Feb 22, 2018 | 06:23 PM
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Originally Posted by dawg
Speed bleeders have a one way valve. Therefore, you would not be able to push fluid the opposite way through the bleeder.
I thought that might be the case. Thank you sir for the info.
 
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Old Feb 23, 2018 | 04:30 PM
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Originally Posted by dawg
Speed bleeders have a one way valve. Therefore, you would not be able to push fluid the opposite way through the bleeder.
It's so damn easy to bleed with speed bleeders why would you want to screw with back bleeding?
Put a tube on the bleeder, stick it in a bottle, pump the brake lever keeping the mc full until the tube flows clear.
Less trouble, less chance of flushing debris into the lines / mc / abs, less mess, less chance of getting brake fluid all over.
Those videos never show that syringe slipping of and spraying brake fluid everywhere.
 
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