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Old 06-28-2010, 11:47 AM   #1
Eagleridge5's Avatar
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clutch master cylinder leaking

The brass connection on the back of the clutch master cylinder is leaking. It looks like it just pushes in and is held by a roll pin. Does anyone know if there is an o-ring in there or something?

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Old 06-28-2010, 12:39 PM   #2
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if it's leaking, change it. If it's a 94/95 change complete assy. clutch master and slave.

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Old 06-28-2010, 01:17 PM   #3
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It's a 93. So the brass deal is replaceable, thank you.
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Old 06-28-2010, 01:29 PM   #4
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From all of what I have gathered on WF, Flatline is correct. In 94/95 YJ's both units (slave and Master) are sealed and shouldn't be repaired. I priced out the complete assembly and the cheapest I found new was 159.99 plus 15.00 S&H. However, I found used for 75.00 total. Not sure if saving $100 now is worth it but if it gets me through a couple of years that'll be fine...
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Old 06-28-2010, 01:29 PM   #5
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Because you know the brass deal is replacable just take it apart. You can find O rings at the hardware store if you need it. There you go!!!
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Old 06-28-2010, 03:16 PM   #6
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That what I was hoping, just a simple o-ring fix. Thanks for the replies.
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Old 05-24-2011, 07:33 PM   #7
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So I hate to bring up old threads but I'm having the exact same issue with my 1993. Where you able to fix it?

I replaced my master cylinder and its leaking from the dust boot where the push rod goes in. It seems like air slips in between the boot and push rod when the clutch is engaged. And when the the clutch is released, the air and brake fluid is squirted out the end...

Has anyone else had this issue?
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Old 09-03-2013, 01:13 AM   #8
Join Date: Aug 2011
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On my 92 I replaced 3 Napa Master Cyl. They leaked from the push rod into the cab. Then the 4th and 5th leaked from the little pin holding the hydraulic line. Still under warranty ...I am not sure what to do. Yes I replaced the o ring each time...I feel a little relief hearing I am not the only one but not sure what to do...
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Old 09-03-2013, 08:23 AM   #9

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if you are using rebuilt ones then you might want to try a new one..I have personally had no problems with them

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