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Tractor Talk Discussion Forum

hydraulic clutch

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EngineerJoyce

10-13-2007 16:13:46




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92 jeep commanche with 230000 miles-the clutch seemed to slip and the pedal went to the floor. I started pumping the clutch pedal and it will build it back up to normal. Is this a bad master cylinder? I know it may need a new clutch-never one put in it-but I am getting advice that it is the master cylinder.
Thanks
JF




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Gerald J.

10-14-2007 14:46:54




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 Re: hydraulic clutch in reply to EngineerJoyce, 10-13-2007 16:13:46  
My '98 F-150 did that last year. A couple spoons of brake fluid seemed to cure it and it hasn't returned.

The Ford clutch cylinder is hollow around the input shaft of the transmission. Handy for spraying brake fluid on the clutch plate, very unhandy for fixing because the transmission has to be removed.

Gerald J.



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S. Crum

10-14-2007 09:12:51




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 Re: hydraulic clutch in reply to EngineerJoyce, 10-13-2007 16:13:46  
Just replaced one of Ford's better ideas in my son's 92 F-150 with the 5 spd. He was driving up cardiac hill at Mansfield U and stomped the clutch to shift and the pedal went easy to the floor, he couldn't downshift and it started smoking and stinking. He eased it back down the hill and took the long way around then nursed it the 40 miles home building a head of speed for every hill on route 6. I pulled it down last weekend and the internal slave cylinder had leaked and squirted fluid into the clutch pack.Now it has all new clutch components and slave cylinder. These parts cost more than I paid for my first 2 Chevys combined.

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Steven f/AZ

10-13-2007 17:57:48




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 Re: hydraulic clutch in reply to EngineerJoyce, 10-13-2007 16:13:46  
Sounds like a bad master or slave cylinder.

Don't bother replacing one without the other. I put a new slave cylinder on once and the contamination from the master ruined it within a week.

Also, be sure to flush out all the old fluid from the lines and reservoir.



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Walt Davies

10-13-2007 17:26:53




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 Re: hydraulic clutch in reply to EngineerJoyce, 10-13-2007 16:13:46  
Doesn't really matter what it is master or slave you still have to pull it down and replace everything.
Walt



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EngineerJoyce

10-14-2007 03:32:49




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 Re: hydraulic clutch in reply to Walt Davies, 10-13-2007 17:26:53  
the master cylinder is found on the wall near the engine correct? where is the slave cylinder found? Can a person with moderate mechanical skills replace these or should I just let a mechanic do it?
thanks
jf



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Red Dave

10-14-2007 12:00:21




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 Re: hydraulic clutch in reply to EngineerJoyce, 10-14-2007 03:32:49  
Yes, the master cylinder is the one on the firewall, connected to the clutch pedal.



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Allan In NE

10-14-2007 03:49:18




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 Re: hydraulic clutch in reply to EngineerJoyce, 10-14-2007 03:32:49  
If the clutch is actually slipping, since it's leaking and with the outfit having that kind of miles, I'd be for replacing the whole schmear.

Everything from the pilot bearing back. Both hydraulics and mechanical.

No, not a job for the faint of heart.

Allan



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Red Dave

10-13-2007 16:35:44




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 Re: hydraulic clutch in reply to EngineerJoyce, 10-13-2007 16:13:46  
Sounds like the clutch master cylinder to me.

If it was the slave cylinder, there would probably be brake fluid leaking out underneath the bell housing.



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phil lowe

10-14-2007 05:31:30




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 Re: hydraulic clutch in reply to Red Dave, 10-13-2007 16:35:44  
replaced the one right near the firewall on my old Cherokee years back ,not a big deal ,think I got a rebuild kit for it,to tell you the truth,the spring inside actually broke .The other one is down near the trany ,not as much fun to mess with ,,unless you've got a hoist.but if you can pump it up with the peddle it's probalby the master.
hint the slave is actually attached to your clutch peddle

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Red Dave

10-14-2007 12:02:09




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 Re: hydraulic clutch in reply to phil lowe, 10-14-2007 05:31:30  
Here is a better Hint: It's the other way around. The master is the one connected to the clutch pedal.



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Steven f/AZ

10-14-2007 07:08:50




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 Re: hydraulic clutch in reply to phil lowe, 10-14-2007 05:31:30  

phil lowe said: (quoted from post at 05:31:30 10/14/07)

hint the slave is actually attached to your clutch peddle


Nope, the master cylinder would be attached to the clutch pedal - generally a rod goes through the firewall to it.

The slave cylinder is the one that runs the clutch... if you have an external slave cylinder like the older Honda Civics, it will be easy to change. If the slave is inside the bellhousing like a Ford, then you need to do quite a bit more work.

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