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Registered
Join Date: Feb 2004
Posts: 30
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Any easy way to bleed slave cylinder?
I own a 1988 911. I just replaced my master clutch cylinder located under my clutch pedal. I tried the suran wrap under the reservoir cap and pinching off the blue feed tube before taking off both lines to the clutch M/C to replace it. Minimal fluid leaked out (mostly from the blue feed tube). The fluid in the reservoir did not go down much at all but after all was finished I added some new fluid to the reservoir it bubbled a few times and that was all. My question is, I know I may still might need to replace the slave cylinder some time soon but for now I just want to bleed the clutch system. I dont have enough "pedal" yet to get the car in gear to move it so are there any "easy" ways to bleed the slave where she sits? I have also just purchased a Motive power bleeder. THANKS
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Registered
Join Date: Dec 2003
Location: Moses Lake, WA
Posts: 892
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For many years I have used what I call my "poor man's power bleeder" which consists of the spring loaded brake fluid pump that you can buy for a gallon can of brake fluid with a 2" piece of vacuum tubing slipped on the end of the nozzle. I just slip the tube over the bleeder, open the bleeder and pump the fluid through the slave backwards until no bubbles appear in the master cylinder. Works perfect every time! You could use a Mityvac to do the same or with a little head scratchin' you could come up with a squeeze bottle or something to use. This method has bailed me out many times and works on the most stubborn air pockets. (Even on British cars with their notorious Lucas hydraulics!)
Hope this helps, Matt
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'73 911 Targa / 2.7 RS spec |
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Registered
Join Date: Feb 2004
Posts: 30
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Just tried a pressure bleed on the clutch slave with the Motive power bleeder. I took the left back wheel off and this made access easier than trying from underneath. I only pressurized to 12 lbs.(don't forget to clamp off overflow tube prior to pressurizing) I opened the slave bleeder and about 4 ozs. of black crap came out with not many bubbles. I can drive the car now but the pedal engages way down near the floor. Did I not bleed long enough? Should I also have someone working the clutch pedal? I thought the Motive bleeder was all you need! HELP
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Registered
Join Date: Oct 2003
Location: UK, Cheltenham
Posts: 391
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As I'm just about to try to bleed my slave cylinder I am really interested in the answers/opinions on this one.
Bump!
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"Racing is Life. Anything that happens before, or after, is just waiting" 1988 Carrera 3.2 Sport Coupe - my mistress 2012 BMW F11 touring - the dog bus! 2017 VW T6 Transporter - the holiday bus/workhorse |
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Registered
Join Date: Feb 2004
Posts: 30
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Just got through with bleed #2. While doing everything just like my prior bleed I jumped in the car and did about 10-15 all the way to the floor clutch pedal pushes (real slow down and up).All the while having about 3/4 liter of brake fluid in the motive power bleeder pressurized to 12-14 lbs. and with the slave bleeder in the OPEN position. Well it finally did the trick and the clutch engages like new!!! I know everybody says do both clutch M/C and slave at once but hey, the M/C was a P.I.T.A. and it's working great now so I'll just wait and see. Hell for all I know it could have been just a ton of air and nothing was wrong in the first place! I didn't take the old M/C apart to inspect it so who knows. Remember clamp off the overflow hose on the reservoir or you will waste a liter of brake fluid! Pressure bleeder fails to mention this fact anywhere. GOOD LUCK
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