Clutch Questions ...
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Joined: Aug 2013
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Clutch Questions ...
I have a 1993 F150, 4.9L 5 spd. The clutch randomly sticks about halfway out and fails to disengage. The clutch itself (when functioning) feels strong.
Today it has gotten much worse and fails every time I depress the pedal. Now when it sticks it actually (completely on it's own) pulls itself all the way down to the floor. I know that at sometime someone put the wrong fluid in the system because the rubber diaphragm inside the master cylinder is swollen to like three times its normal size. Yesterday I tried to flush the system with Dot 3 and replaced the diaphragm with a aftermarket one that is almost flat (made for brake system). What role does this diaphragm play in the hydraulic system? Could this be the source of my problem? Do you have to buy a whole master cylinder to get one? The auto parts store and the dealer both told me you do and like I said we are on a incredibly tight budget right now ... in between jobs.
Any advise would be greatly appreciated ... Thanks!
Today it has gotten much worse and fails every time I depress the pedal. Now when it sticks it actually (completely on it's own) pulls itself all the way down to the floor. I know that at sometime someone put the wrong fluid in the system because the rubber diaphragm inside the master cylinder is swollen to like three times its normal size. Yesterday I tried to flush the system with Dot 3 and replaced the diaphragm with a aftermarket one that is almost flat (made for brake system). What role does this diaphragm play in the hydraulic system? Could this be the source of my problem? Do you have to buy a whole master cylinder to get one? The auto parts store and the dealer both told me you do and like I said we are on a incredibly tight budget right now ... in between jobs.
Any advise would be greatly appreciated ... Thanks!
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New User
Joined: Aug 2013
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One other thought/question ... can I disconnect the line from the master cylinder and open the bleeder valve and pump Dot 3 through the system to more effectively flush it? I am thinking I could use the hand pump that I use to put oil in the lower unit of my boat. Thoughts?
Tuned
Joined: Dec 2012
Posts: 372
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From: 85716
I'm pretty sure that the diaphragm needs to be "cup-shaped" in order to help pressurize the system.
Here's an interesting picture of the diaphragm (courtesy of Steve83)
1983 Ford Bronco Hydraulic Clutch picture | SuperMotors.net
Have you tried a pick-and-pull to get the rubber diaphragm?
Here's an interesting picture of the diaphragm (courtesy of Steve83)
1983 Ford Bronco Hydraulic Clutch picture | SuperMotors.net
Have you tried a pick-and-pull to get the rubber diaphragm?
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