Question about 1985 Ford F 250

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I have replaced the clutch,pp. and throwout in my 1985 f-250 and it doesnt disengage.i have since replaced both clutch cylinders to no avail.HELP!!!!

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I have a 1985 F-150 and replaced all of the same as you. You have to bleeed and bleed and bleed the clutch master and slave cylinder. I thought there was something wrong but apparently if there is just the slightest amount of air anywhere in the system the clutch will not disengage. Also from the tiny air bubblees generated from the bleeding proccess you need to take a break and allow some time for the air to settle and rise between bleeds. Have patience it will work.

Posted on Mar 12, 2011

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Does hydraulic slave cylinder bearing need greasing?


Hi Sheila:
The clutch slave cylinder pushes against a throwout arm
The throwout arm is a lever and it pushes against the throwout bearing which thenpresses against the clutch plate and dis-engages the clutch.
Throwout bearings are typically sealed units that last until they fail, at which time they get replaced.
You should not have to worry about greasing it.
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First of all I think I should say that clutches do not make grinding noises - but transmission gears do.
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It is very difficult for you to disengage the clutch by hand or with any leverage you can get outside the transmission. There is over 200 lbs of force clamping on the clutch disc.

If you replaced the clutch and took the slave cylinder out of the transmission without putting a brick under the clutch pedal or disconnecting the pivot arm from the pedal then you ruined the hydraulics. Buy a new PRE-BLED system from a local auto store. Generally this is the problem.

Either that or the clutch fork is bent or you installed the throwout bearing backwards (or simply fell off the fork which is not all that uncommon).

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