Date: Fri, 05 Dec 2003 16:52:27 +0000
From: Grunff <>
Subject: Re: 9000 clutch master cylinder

Tom wrote: > There is a known issue that brake fluid attacks and degrades the feed pipe > from the fluid reservoir to the master cylinder and the rubber part of the > hose from the master cylinder to the slave cylinder creating tiny marbles of > rubber. After master cylinder replacement, because of pressure bleeding, > these marbles of rubber find their way into the slave cylinder and often > cause the slave to fail soon after, [sometimes the new master too]. It is > this rubber that is the main cause of the fluid being black in colour. I > have found that fitting a new feed hose to the master cylinder when fitting > a new cylinder and pressure bleeding with at least 20psi and having someone > slowly pushing the clutch pedal up and down at the same time gets all the > crap out of the system. After bleeding using copious amounts of fluid, leave > to stand for 10 minuets before trying the clutch. Using this method has > reduced slave cylinder failure dramatically. HTH, Tom, Saabtech. Hi Tom, I'd heard about the hose issue before, so when I did my last 9k clutch (master/slave/clutch) I also did the pipe. When I cut open the old pipe, it did look quite perished on the inside. -- Grunff

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