Date: Fri, 5 Dec 2003 18:49:27 -0000
From: "Adrian England" <>
Subject: Re: 9000 clutch master cylinder

Grunff wrote: > 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. I watched the guys at the Saab dealer bleeding my clutch. They connect a hose between the n/s/f caliper bleed nipple and the clutch slave cylinder bleed nipple. You then pump the brakes to bleed the clutch. I was pretty amazed. It works! -- take off "ospam" to mail me

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