fordopie:
On another post about slave cylinders, there was something mentioned about 'removing this washer/plate/???' if you have a 19XX, leave it on for all built after XX-XX-XXXX.
Were there any notes in the box with the new slave?
Are you sure you got the right slave? Did it compare in front to rear dimension with the old one? Did you compare the old pressure plate to the replacement?
tom
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I have spent 2 days following every suggestion. I have no air in system, only after removing the master completely from the truck and bench bleeding it. Lots of bubbles of air came out. Pedal is rock hard with the clutch line disconnected from the slave. When connected to the slave connector and bled, I get no air bubbles. So far so good. Pedal seems fine now. But, the clutch slave cylinder does NOT travel enough to push the clutch in all the way. I can barely shift at the bottom of the pedal. The clutch engages about 1 inch from the floor. I give up.... Could it be that my slave just does not travel enough to disengage the clutch properly? Could the slave cylinder need to be mounted on offset washers to put it closer to the clutch plate? Any suggestion is welcome. I just wanted others to know that bleeding all the air out may still not achieve success. I am ready to call the Kidney Foundation and give this Ranger away.....
There are 3 hypotesas... first: pressure plate ore disk are worn ore diaphragm is weaken.
The other hypotesa... : MC bore diameter is smaller your had before....
The third hypotesa - no pedal play and piston does not open reservouar passage and fluid does not come into bore....
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It happened AGAIN. I can't imagine what is going wrong. I went to leave for work this morning, and the pedal felt squishy. I checked the resevoir, and it was full up to the bottom of the black diaphram thing. I knew better than to drive on to work this time (i did last time, had to load the truck on trailer and tow home) so I drove it around the subdivision for a few minutes. Before long, it lost all pedal feel. I had to force it into neutral from second and coast into the driveway.
Any ideas on what is causing this? Is it possible that the slave is bad, and not the master cylinder? If thats the case, then why is replacing the master cylinder helping the situation for awhile, and then failing?
Bubbles slowly working their way up from the slave into the MC and causing the spongy pedal? Either that, or another bum MC.
You could take it to a mech and see if they have a way to power bleed the thing. It is likely the trapped air from when it was allowed to drain down completely... no?
tom
__________________
It's not how hard you work, it's how much you get done. Simplificate and add lightness
Bubbles slowly working their way up from the slave into the MC and causing the spongy pedal? Either that, or another bum MC.
You could take it to a mech and see if they have a way to power bleed the thing. It is likely the trapped air from when it was allowed to drain down completely... no?
tom
Beats me. I am going to replace the slave and replace the MC, whether its bad or not. It is free lifetime warranty through O'Reily's. Hopefully doing both those things will get this resolved once and for all. Anything special about installing a slave cylinder I should know about? I am so excited about dropping the transmission...NOT
Don't use a reman from O'Reily's, don't use anything but a Ford Orginal New.
Lifetime warrenty?? You still have to take it out and replace it.
The master cylinder I bought two weeks ago is exactly the same as the Ford OEM that came on the truck. I'm not sure if you have read the entire thread or not, but back in March or so I lost all pedal pressure. I checked reservoir, and it had fluid.
I thought it could be a bad slave, but figured it was worth replacing the master cylinder and seeing if that fixed it. I bought a new MC from O'Reilly's, installed it, and everything seemed fine . However, about three weeks ago, I lost all pedal pressure again. I was pretty ticked off and figured the O'Reily MC was cheap and crappy, and thats why it failed.
I almost went to Ford and bought a new one, but they were closed. So I went and had the O'Reilly MC replaced under warranty, and I am glad I did. I compared the new one to the original OEM which I still had lying around the shop, and it is the exact same one! Same manufacturer, part #, everything.
Ofcourse, I am now back to square one, as I lost all pedal pressure again on Monday. That is why I am going to replace the slave, and probably the MC (even though it is almost brand new, and may or may not be bad) since it is under warranty, and be done with it.
G_K50 got me thinking...maybe there is a problem with the hydraulic line, and/or the connector plug, that runs between the MC and the slave. Can you even buy one of those? I was looking online and didn't see one available.
You can buy the line but have to get it from the dealer. Thats where i got mine. I too have changed my slave cylinder and master cylinder and continued to have problems. I had to replace the Master cylinder again and that seems to fix my problem. I call the tech side of the house at Luk and they say to use a pry bar to pry the slave cylinder as far in against the pressure plate with everything connected and that the air bubbles would travel up to the master cylinder. I think the air bubbles get caught up in the line because of the way it bent. I know its a hassle to take the master cylinder out but you need to take it out and bench bleed it again. Just make sure to stretch the line so the air bubbles travel all the way up during bleeding. Good luck
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