Question about Ford F-250

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I just put a new clutch slave cylinder in and i am having problems with it still.. it has been bled and everything but it still does not disengage the clutch completely so it is hard to shift and wont go in gear after starting it, unless it was originally in gear?

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  • hunt4ever_08 Aug 25, 2010

    its all been checked. there is nothing wrong with any of it

  • hunt4ever_08 Aug 26, 2010

    Everything has been checked... there is nothing wrong wit any of it. there is a brand new master and hoses also... no leaks

  • hunt4ever_08 Aug 26, 2010

    i have checked everything in the clutch and transmission and everything is fine... there is a brand new master and hoses also? the reason i pulled the slave cylinder is because it was cracked

  • hunt4ever_08 Aug 26, 2010

    it is a 93 f 250 with the 7.3l international turbo diesel... it has 280,000 miles but has been recently worked over pretty well

  • hunt4ever_08 Aug 27, 2010

    hey thanks for the advice i will try it out

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For starters, what year and model vehicle are we speaking of? Engine size and mileage also?

Posted on Aug 26, 2010

  • GetMeOttaHere Aug 26, 2010

    I'm guessing the system was bled correctly ( don't take this personal), but I listed the procedures anyway. If the system is bled, there is a possiblilty that the clutch release arm is bent.



    HYDRAULIC SYSTEM BLEEDING

    Externally Mounted Slave Cylinder



    1. Clean the reservoir cap and the slave cylinder connection.

    2. Remove the slave cylinder from the housing.

    3. Using a 3 / 32 in. punch, drive out the pin that holds the tube in place.

    4. Remove the tube from the slave cylinder and place the end of the tube in a container.

    5. Hold the slave cylinder so that the connector port is at the highest point, by tipping it about 30° from horizontal. Fill the cylinder with DOT 3 brake fluid through the port. It may be necessary to rock the cylinder or slightly depress the pushrod to expel all the air.


    WARNING
    Pushing too hard on the pushrod will spurt fluid from the port!


    1. When all air is expelled (no more bubble are seen), install the slave cylinder.

    Some fluid will be expelled during installation as the pushrod is depressed.



    1. Remove the reservoir cap. Some fluid will run out of the tube end into the container. Pour fluid into the reservoir until a steady stream of fluid runs out of the tube and the reservoir is filled. Quickly install the diaphragm and cap. The flow should stop.

    2. Connect the tube and install the pin. Check the fluid level.

    3. Check the clutch operation.


    Internally Mounted Slave Cylinder



    With the quick-disconnect coupling, no air should enter the system when the coupling is disconnected. However, if air should somehow enter the system, it must be bled.



    1. Remove the reservoir cap and diaphragm. Fill the reservoir with DOT 3 brake fluid.

    2. Connect a piece of rubber tubing to the slave cylinder bleed screw. Place the other end in a container.

    3. Loosen the bleed screw. Gravity will force fluid from the master cylinder to flow down to the slave cylinder, forcing air out of the bleed screw. When a steady stream with no bubbles flows out, the system is bled. Close the bleed screw.

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If the slave cylinder does not help after it was bled. it tells you the clutch is totally worn away. You will need to replace the clutch and also the pilot bearing, pressure plate, & throwout bearing

Posted on Aug 25, 2010

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1 Answer

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It sounds like the clutch is not disengaging when depressed. What is the year make and model? It most likely has a hydraulic clutch. Many vehicles have the clutch slave cylinder inside the bell housing of the transmission. This means that the fluid line to the slave cylinder was removed to remove the transmission. If a new slave cylinder was installed when the clutch was replaced (this is a good idea to do when servicing a clutch with a bell housing internal slave cylinder) then the system will need to be bled to remove air from the system and allow the clutch disengagement to function properly.

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You need to have the system either pressure bled or you need to vacuum bled it with a MityVac brand clutch bleeding tool kit.

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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.

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