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post #1 of (permalink) Old 08-28-2000, 11:20 PM Thread Starter
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Help!! Have dealer do it or do myself???

As many know, I'm having clutch difficulties at the moment. The dealer I took it to that worked on the clutch a bit ago said that the clutch master cylinder needs to be replaced. They want to charge $300 for it. I could do that but if it needs fixing again I have to figure out how to get it out 30 miles from where I live to this dealer. I could drive out there and take it to a friends house and do it myself for $100. What shall I do? I wouldn't mind doing it myself but what does everyone else think? Thanks a bunch!

1993 Wrangler 4.0/5spd, all stock...but not for long!!!!
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post #2 of (permalink) Old 08-29-2000, 06:57 AM
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Re: Help!! Have dealer do it or do myself???

I think that the bleeding could be a real pain in the a$$.

My buddy did his clutch on his ranger, and had to take it to the dealer to get it blead. That cost him $50 I think.

Never done one myself though, always had automatics.


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post #3 of (permalink) Old 08-29-2000, 09:05 AM
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Re: Help!! Have dealer do it or do myself???

If it's just the master, do it yourself. The slave is another matter, but the master is easy. The easiest way I've seen to bleed them is to gravity bleed them. Be careful not to let the fluid run down, or you'll have to start all over. I replaced my master and it was a cinch, they're really easy to bleed as well because the line is so short and so much higher than the slave. If it doesn't work, you can always take it to the dealer then, I've driven hundreds of miles with no clutch, it's really easy, even in stop and go traffic.

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post #4 of (permalink) Old 08-29-2000, 09:44 AM
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Re: Help!! Have dealer do it or do myself???

Agreed. Don't have some bozo overcharge you for a very simple job. As a rule, the dealer should be your last resort. When my master cylinder started leaking I bought the "rebuild" kit for 18 bucks. Rebuilding was simple so replacing should be even easier. I I had to do it over again I would have just replaced it though.

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post #5 of (permalink) Old 08-29-2000, 11:11 AM
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Re: Help!! Have dealer do it or do myself???

Here are tips on how to bleed a new master cylinder from a real pro .. Van, of Vanco Power Brake Supply in California .....
If you will bench bleed the MC, then follow his simple bleeding instructions once you have it installed, you are home free ...
(from my HydroBooster instructions page at

Bench Bleeding the Master Cylinder:
Put the master cylinder in a vice.
(It won't hurt to point the piston end downwards a little)
Fill both reservoirs full with DOT 3 brake fluid.
Using a screwdriver - push the piston in way, plug both output holes with your fingers and release.
Do this until fluid streams out of both lines.
When done, put the plugs back in the ports.
Mount the master cylinder to your firewall.

Brake Line Bleeding:
1. Get a helper to jump in the Jeep and work the petal.
2. Back off the master cylinder's brake lines one turn (both of them).
3. Have your helper push the brake pedal to the floor.
4. Tighten both brake lines and have the helper release the brake.
Repeat 2-4 until the fluid streams out of both ports without "sputtering".

----------- CUT

THAT'S IT! Your lower brake lines will usually not have to be blead since this simple operation evacuates all the air in the upper lines.
It's exactly like bleeding the slave clyinders or calipers, only you open both fittings on the MC at the same time instead.
P.S. You might want to get a price quote from them on a new MC.
He and his brother are real nice guys. (323) 563-1588
He never recomends using even a re-manufactured one.
Your life depends on it!
They DO, however, re-man Jeep porportioning valves for $75 bucks.

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post #6 of (permalink) Old 08-29-2000, 11:51 AM
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Re: Help!! Have dealer do it or do myself???

I think this post got a little of subject. Jamgood isn't bleeding or rebuilding a brake master cylinder. He's needing to replace the clutch master, though the bleeding principles are similar.

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