C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Clutch and slave cyc. bleeding procedure

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Old Jun 9, 2012 | 02:56 PM
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Default Clutch and slave cyc. bleeding procedure

I spent about 9 hours trying to bleed the system after replacing the clutch master cyc. It was that darn bleeder on the on the slave cyc. In other words it kicked my butt. I was working nite shift so I got no sleep and it made me crankey all nite. but, I gave me time to think about a solution, I created my own pressure bleeder

How it works is I drilled two holes in the cap of a new bottle of brake fluid. Then you stick a length of .25 vacuum hose in one hole and make sure it goes to the bottom of the bottle. for the second hole I turned the pressure of my air compressor to about 6#, I used an air gun with a rubber tip.

I hooked the vacuum line in the brake fluid bottle to the bleeder on the bottom of the slave cyc. cracked open the bleeder and using the air gun I pushed it into the open hole on the bottle cap and pulled the trigged for about 4-5 seconds stopped and check the resivoir on the master cyc. it was half full ( I had emptyed the plastic bowl before started). went back under and repeted the blow thru untill I had fluid coming out of the plastic bowl. I had put plastic under the master so I could minimized the brake fluid getting in places it don't belong

I know they sell the pressure bleeder kits. but where I live is 25 miles from the nearest parts store and working by my self most of the time I liked the fact that I could put something together and have it work
and finished the job in 10 minuets where took me most of the day before and never did al the air out

Hope this will help out someone if they get stuck

Mike

Last edited by MCAF; Jun 10, 2012 at 10:32 AM. Reason: spelling
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Old Jun 9, 2012 | 03:47 PM
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Thats cool how you did that and bet it worked great,the way I have done it was to unbolt the slave let it hang and bleed it like that then reinstall.
DPC
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Old Jun 9, 2012 | 04:44 PM
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I just did this and asked the question but no one responded. So I opened the bleed valve, filled till fluid came out the bottom. then closed it and pumped the pedal 60 times. Now it works perfect. Don't know how but feels great and works great....
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Old Jun 9, 2012 | 11:28 PM
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Don't know if it would have helped but you're supposed to unbolt the slave from the bellhousing and tilt it 45 degrees bleeder valve on the high side when bleeding the system.

Love the ingenuity on the pressure bleeder. I'm often working on th car when shops are closed and have to get creative with tools if I want to get to my goal for the night.

:thumbsup:
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Old Jul 1, 2012 | 09:38 AM
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Originally Posted by MCAF
Hope this will help out someone if they get stuck
Mike, this was a great idea ... I'm tempted to try something like this just to see how it works

You weren't able to bleed it with the slave in place were you? (As others mentioned, I'd think you'd need to unbolt it to get to the bleeder screw, but I could be wrong)
*edit* you probably have a later design with the bleeder on the bottom, don't you? For my 90, the bleeder is on the top of the slave

My only concern about using my air compressor would be with moisture. Even with a good filter, water gets by ...
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