Pressure Bleeding

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Jan 15, 2001 | 02:24 PM

80'sAudiguy

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Pressure Bleeding

I am going to replace the clutch master cylinder aand the Bentley says to pressure bleed the system to 35 psi.

How exactly do I do this? I have seen pressure bleeders for $100 or so, but this seems like something that can be fabricated (mason jar, puch two holes in lid, couple of fittings and tubes, plus a pressure source -- like a tire inflator) Has anyone tried this before?

Anything to look out for in doing this job.

Thanks,

-- Tom

Jan 15, 2001 | 04:02 PM

MikTip

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Not nessessary. "Old fashioned" bleeding method will do fine.

Jan 16, 2001 | 03:09 AM

Dwight V.

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Ditto, just did this myself with no problems.

Jan 16, 2001 | 11:18 AM

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Get the Motive pressure bleeder (more)

You can buy this at Bavarian Autosport and from Motive directly. It's pretty neat- you pump it up to a desired pressure, then let it out to bleed. You have a separate reservoir for the fluid, so you don't worry about running out of fluid. As you may tell, I haven't used it, even though I have one at home sitting on a shelf.

Worth the $40- I've talked to several people who have used it with great success on Audis.

TM

Jan 17, 2001 | 09:40 AM

KeithS4

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done it your way

I've done what you propose more or less. drilled a hole in a cap that would fit on the reservoir, put a schraeder valve in and pumped up like 15 psi. works fine. cant remember exactly where I got the valve. have used the same valve screwed into an sliced up inner tube, clamped to intake ductwork, intercoolers etc to check for leaks also.