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Bleeding hydro handbrake

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Old 31-08-2011, 08:45 PM
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wide ka
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Default Bleeding hydro handbrake

How do people do it?

I've one in my kit car, carnt get the air out of it! It's on twin cylinders so rear has it's own master that then Leeds to the handbrake then out to the rear brakes
Old 01-09-2011, 09:14 AM
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Big Will_
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Have you definitely got it plumbed in right?

Normally on hydraulic handbrakes you plumb the master cylinder for the handbrake in backwards. You connect your rear circuit master cylinder 'out' from the pedal box to the handbrake master cylinder 'out'. The handbrake master cylinder 'in' then goes to the rear brakes.

This allows the fluid to flow through the handbrake for normal brake operation, but will still pressurise the rear brakes when the handbrake is operated.

I've never had to do anything but bleed as normal on the rear brakes.
Old 01-09-2011, 09:21 AM
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Martin-Hadland
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Originally Posted by Will Pedley
Have you definitely got it plumbed in right?

Normally on hydraulic handbrakes you plumb the master cylinder for the handbrake in backwards. You connect your rear circuit master cylinder 'out' from the pedal box to the handbrake master cylinder 'out'. The handbrake master cylinder 'in' then goes to the rear brakes.

This allows the fluid to flow through the handbrake for normal brake operation, but will still pressurise the rear brakes when the handbrake is operated.

I've never had to do anything but bleed as normal on the rear brakes.
We dont plumb them in like that Will, maybe I've read it wrong? We go from brake master cylinder to the 'in' (or what you'd normally plumb the reservoir to) and the outlet goes to the rear brakes.

But to answer the guys question, to bleed the handbrake you simply bleed the rear brakes, you could loosen the outlet pipe on the hyd h/brake and pump it that way and then blled the rear brakes if you're getting into difficulty.

Last edited by Martin-Hadland; 01-09-2011 at 09:30 AM.
Old 01-09-2011, 08:16 PM
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wide ka
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I've tried it both ways with the hoses and cannot get the air out of the system, a little strange I think, I'll keep trying though
Old 01-09-2011, 09:35 PM
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Fudgey
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mine was as per how martin said.



the fluid in goes to the rear of the cylinder, and the out goes to the rear brakes.

i just bled as normal and it was fine. maybe your cylinder is fooked?

i did use a vac bleeder on a compresor tho, best tool i have bought to work on cars with!

my wand was fooking brutal lol
Old 01-09-2011, 09:53 PM
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wide ka
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Hmm, maybe it's all new though, unsure how the cylinders fail? Worked fine last year
Old 01-09-2011, 10:19 PM
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well, if the seals go it wil have air in it.

just keep trying to bleed it mate, see how you get on
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