clutch master cylinder replacement ? -
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post #1 of 7 Old 02-18-2006, 02:58 PM Thread Starter
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clutch master cylinder replacement ?

I'm in the process of replacing my clutch master cylinder, got everything undone and disconnected except for the connector at the clutch itself. Its the black quick disconnect - one long black cylinder and then a little, larger in diameter 2nd cylinder at the one end. How does this quick disconnect come undone? Mine barely moves at all - maybe a millimeter tops.


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post #2 of 7 Old 02-18-2006, 03:40 PM
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thats funny i just did mine, like not even an hour ago, did u dissconnect it from the clutch pedal itself?

if you have aim ... mine is dkblaze69 i can help you out.
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post #3 of 7 Old 02-18-2006, 03:53 PM Thread Starter
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yah - the pedal side is the easy side. I'm talking about the connection where the hose from the master cylinder goes into the tranny housing itself. How does that black cylindrical quick disconnect come off? Or does the hose come off of the master cylinder itself?
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post #4 of 7 Old 02-19-2006, 03:05 AM
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1991 YJ Wrangler 
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okay there should be a "wrapped nail" style thinger that goes through the brass into the cylinder, take a nail and a small hammer and just tap it out. it should come out rather easily. it looks like a burrito wrapped up like 4 times and its really small and shiny good luck. Just a reminder, dont push the clutch in until you have all the fluids replaced so you wont have to bleed it. I learned the hard way

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post #5 of 7 Old 02-19-2006, 07:56 AM
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That wrapped burrito is called a roll pin , the new master cylinder should come with a new o-ring and roll pin in a small bag.

I got the dirty, low down, lovin my YJ Blues
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post #6 of 7 Old 02-20-2006, 10:01 AM Thread Starter
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Thanks guys - according to my jeep manual, you are supossed to disconnect the hose from the tranny housing - I just went and bought a new clutch master cylinder and it didn't come with that cabling anyhow so yah I just removed the roll pin and the hose from the master cylinder itself.

Quick question on bleeding the system. I imagine it should go something along these lines - have someone press in the pedal - open the release valve, let bleeding occur, close release valve - pump pedal a few times and check play. Does this sound correct to you all? I take it I'll have to do this a few times...

Thank for your help guys.
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post #7 of 7 Old 02-20-2006, 05:30 PM
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You are correct, bleed it just like brakes. I do not pump mine between bleeding. It took quite a few times to get all the air out of mine. I hope you used a original equipment master cylinder or you will be replacing the master cylinder in a year or two. Ask me how I know?

91 Wrangler 4.0 5sp
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