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  Hydraulic linkage slave residual pressure?

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Author Topic:   Hydraulic linkage slave residual pressure?
fordguy57
Journeyman

Posts: 32
From: Mpls MN USA
Registered: Nov 2001

posted 12-12-2001 03:25 PM     Click Here to See the Profile for fordguy57   Click Here to Email fordguy57     Edit/Delete Message   Reply w/Quote
Can someone tell me how this linkage is prevented from prematurely wearing out throwout bearing? Seems it surely would in short time because slave cylinder is attempting to extend itself, even when pushed back to retracted position.
Is there supposed to be a spring somewhere to
pull clutch fork back overcoming this pressure, or what? cuz otherwise it woudl be pushing on throwout bearing at all times. (I have master, slave, connecting line and bellhousing off of a '90 truck to use in a 460 swap into car...). But, I must be missing something here? One person thought that there might be retracting spring at master cylinder. But, pulling master rod all the way back does not seem to affect slave at all, so suspect that is not the answer? Any hydraulic clutch experts-but-not-by-choice out there? thanks, Mike H

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fordguy57
Journeyman

Posts: 32
From: Mpls MN USA
Registered: Nov 2001

posted 12-17-2001 06:26 PM     Click Here to See the Profile for fordguy57   Click Here to Email fordguy57     Edit/Delete Message   Reply w/Quote
Anyone done their homework on these hydraulic set-ups? Hate to burn up a clutch trying to figure out how it can work...

thanks, Mike H.

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SteveLaRiviere
Administrator

Posts: 43151
From: Saco, Maine
Registered: May 99

posted 12-17-2001 07:33 PM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
Well, I tried to open my Ford truck manual on CD only to find my CD ROM isn't working.

I'll try my other PC after I cool down.

------------------

'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC

Christmas shopping? Why not use the
M&M Bookstore?

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SteveLaRiviere
Administrator

Posts: 43151
From: Saco, Maine
Registered: May 99

posted 12-17-2001 07:47 PM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
Ok, I dug out an old shop manual I had for the '86 F series. On that system, there is a retracting spring right at the clutch pedal. By the looks of the diagram, it looks like a pretty stout spring at that.

Hope this helps.

------------------

'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC

Christmas shopping? Why not use the
M&M Bookstore?

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TomP
Gearhead

Posts: 5761
From: Delta BC Canada
Registered: Dec 99

posted 01-07-2002 05:42 PM     Click Here to See the Profile for TomP   Click Here to Email TomP     Edit/Delete Message   Reply w/Quote
I am getting rid of the hydraulic clutch crap on my 5.0 Ranger , it appears to not be bleedable, i've given up on it. They say it's supposed to load the throwout bearing actually, and for sure it wouldn't last as long that way. A mechanical or cable is a better system.

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