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07 Jeep Wrangler Clutch/Slave Cylinder

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Old 03-09-2021, 05:43 PM
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Default 07 Jeep Wrangler Clutch/Slave Cylinder

Hello everyone,

I had a complete failure of my slave cylinder a little while ago. I finally got around to replacing it as well as the throw out bearing. After completely reinstalling the transmission, the clutch is not functioning properly. The clutch itself is only about 2 years old. I installed everything just as I had taken it apart, and now I'm wondering where I could have gone wrong. I bled the slave about 15 times, but it's not engaging the clutch whatsoever. When I open the bleeder valve the brake fluid is clear and free of bubbles. Master cylinder is functioning properly as well. Is this a matter of needing to bleed the slave about 50 more times and waiting time periods of up to 30 minutes between bleeding sessions?? (Saw that on youtube). At a loss here, and as spring is upon us I am dying to get her back on the road.

Thanks in advance.
Old 03-10-2021, 12:51 AM
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I've never had any difficulty bleeding the clutch hydraulic system. Usually a five minute job (with a friend to pump the pedal).

There are a pair of O-rings (they aren't really O-rings, but they sort of look like it) that are made out of Flubber (a Disney product). When you pull the line off the slave cylinder (or the other end at the master), that ring may stick on the end of the line briefly. Just briefly. Then fall off. Then exhibit its Flubber properties by bouncing off the concrete and quickly disappearing from sight, hidden in the most remote, difficult to access place of your work area. If you have floor drains, whoa is you. You'll get some slight seepage of brake fluid at the missing joint, since you may have never known that seal was even there. Unless you're certain you didn't drop that, that would be the first place I'd look. And if you can't find it, that's when you learn you get to buy a new line, which comes (or at least used to) with the two "not O-rings".
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Old 03-10-2021, 08:07 AM
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Giggle .....

Well, if that is not the solution, it was certainly worth the read !

It’s unbelievable how things can disappear - lol ....

Neville
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Old 03-10-2021, 05:27 PM
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Can completely confirm that what Mark said, is true! Make sure that it's in there, as it will never bleed. I had mine on and bled in a matter of minutes. I actuated the plunger on the slave cylinder by hand as I was bleeding to help speed up the process. Just make sure you aren't pushing it in at an angle.
Old 03-15-2021, 02:24 PM
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I will give the ends a gander. Chances are that mischievous matter is probably gone. I can’t think of any other reason as to why when i depress the clutch pedal the clutch won’t engage. Will report back.
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