November Dawn

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I have a 2006 Ford Mustang GT. The transmission was recently rebuilt at home and a new clutch kit was installed which came with a slave cylinder. Thought the slave cylinder might have been the issue replaced it. We have go through three clutch lines between the slave and master cylinder including the OEM line. The master cylinder as well as the line between the reservoir and the master cylinder has also been replaced. The system has been bled for many many hours and the air bubbles just keep coming. All connections have been double and triple checked for signs of leaking fluid which none has been found.

Any help or insight is greatly appreciated.

Also the Clutch Housing Sealing Cap Clip 4R3Z-7K584-AB keeps breaking every time it is installed, three times now. Any ideas about this would help as well.
 

Midlife Crises

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Did you fill the slave cylinder with fluid before you installed it? Is the slave cylinder mounted with the hydraulic connection in top? Did you check the throwout bearing preload of the new parts you installed?
 

Lime1Gt

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Check all fittings that may use an o-ring, internal or external. Any twisted or nicks in the o-rings may allow air into system when using the pedal. Lightly lube o-rings before installing.
 

Rick Simons

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Slave cylinder preload is what I would consider a critical item to check with an aftermarket clutch.
You mention you went through 3 clutch lines- expand on that. Does this mean you've tried 3 different lines?
 

Mustangk

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Walk us through the process you used to vacuum bleed the system.
Can you instead walk me through how to use a mightyvac/vacuum bleeding hand pump pistol device to bleed and fill it. ??

Sent from my iPhone using Tapatalk
 

Mach2burnout

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It’s pretty simple actually.

Assemble your vacuum pump using only a piece of hose and the small adapter tip that connects to the the largest rubber plate that the kit is supplied with.

Take the lid off of your master cylinder and lay the large rubber plate over the top of the MC. Make sure it is completely covered. Connect the hose and pump up to 20 inches of vacuum and let sit. I leave mine for 5-10 minutes. At some point during that time go inside the car an slowly depress the clutch peddle all the way to the floor 2-3 times.

If at any time you start to lose vacuum during this process you have a leak. If at the end of this process you still have the 20 inches of vacuum you are good. If you dropped to 18-19 inches then repeat the process. If you dropped more than that look for a leak.

I have done many clutch and brake systems this way with out ever touching a bleeder and has worked perfect for me every time. Even when changing out a single brake caliper.

I hope this works for you.


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Kev555

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pressure bleed or vacuum bleeding it? pressure bleeding will soon show a leak.
 

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