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Pressure to pump brake bleed kit to ?


andy_harries

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Finally moving away from the time honoured get-my-wife-to-press-the-brake-pedal approach to bleeding brakes and buy a brake bleeding kit. I had a cheap one a while ago - it was rubbish and binned after one attempt.

Purplemeanie's excellent blog recommends a Sealey VS820-  given its only £50 I wasn't going to look at anything cheaper (unless there is a good reason to).

What pressure should I pump it up to?  Various guides I've found elsewhere suggest 10psi is a good figure.  Would the 7 be any different?

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I use an ancient (1980's??) Eazibleed kit which is less sophisticated than the Sealey device but is similar in concept - at least when it comes to pressurising the system.  With the Eazibleed you just connect it to any old pumped-up tyre that might be around, so typically mine has been used with tyres ranging from 10 psi up to around 35 psi. 

Seems to make no difference to the effectiveness (and if you get it wrong the brake fluid seems to fly just as far whether it's got 10 or 35 pounds per inch of grunt behind it...) *curse*

James

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I tend to let the tyre down to 15psi as I have heard stories of the brake reservoir splitting!

Whatever the system there is much less chance of spillage if you keep the remote reservoir dry and keep topping up just the master cylinder reservoir.

Duncan

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