Reverse Bleeding Clutch

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911Carrera

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Bought a new 2005 and have never worked on her. Never heard of reverse bleeding, but after searching the forum, did it and flushed some filthy stuff back up to the MC. I tried the "traditional bleeding" with no luck after changing out the Master Cynlinder. I never did see that trash I flushed out using reverse method. Using the pump the lever a bazillion times, then crack the bleeder valve at the slave, just didn't do it. So, thanks to all that have shared their knowledge.
 

Fire-medic

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You go on other forums, and people say, "you're endangering your life doing that!" Well, don't drink the brake fluid!

But seriously, folks, I don't even touch my Mityvac anymore, except if I have to move it. For a non-ABS system, I haven't found anything quicker and easier than a reverse-bleed. As you saw, it forces crap upwards and out, into the master cylinder. Then you just use a syringe to remove the contaminated fluid.

When you stop seeing 'fizzies,' those tiny little bubbles, emerging from the front master cylinder hole closest-to the banjo bolt, the system is usually bled; be careful squeezing the lever then, as you'll probably see a geyser of brake fluid erupt from the master cylinder, should you squeeze it.

Clutch slave cylinder replacement, including reverse-bleed directions:
http://www.vmaxforum.net/showthread.php?t=45011&highlight=reverse-bleed

Directions for reverse-bleed work for either the clutch master cylinder or the front brake master cylinder.
 

911Carrera

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I rolled it out into the driveway, glad I did. Just being curious, I left the cover off the master and pushed the syringe, squirted brake fluid 4 ft into the driveway and wasn't pushing hard on the syringe. I would advise leaving the cover on the master.
 

Fire-medic

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I rolled it out into the driveway, glad I did. Just being curious, I left the cover off the master and pushed the syringe, squirted brake fluid 4 ft into the driveway and wasn't pushing hard on the syringe. I would advise leaving the cover on the master.
The same thing will happen if you dislodge a bit of crud in the line, during the reverse-flush, and it blocks the small master cylinder hole, and then you try using a pin or a guitar string to clear the obstruction. "Spindletop!"

 
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