Clutch slave cylinder problems
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Clutch slave cylinder problems
I have a 1985 F150 with the 300 Inline 6 cylinder with a 4 speed Manual Transmission.
A week ago I started having problems changing gears. If I pump the clutch pedal repeatedly from anywhere to 5 to 10 times, The transmission will change into first, second, third or reverse. After a couple of minutes of driving or sitting this repeated procedure has to be started all over again.
I replaced the Clutch Slave Cylinder and the Clutch Master Cylinder. I have bleed the system more times than I care to say, But this situation has remained the same.
My question is "What else could be the problem?"
A week ago I started having problems changing gears. If I pump the clutch pedal repeatedly from anywhere to 5 to 10 times, The transmission will change into first, second, third or reverse. After a couple of minutes of driving or sitting this repeated procedure has to be started all over again.
I replaced the Clutch Slave Cylinder and the Clutch Master Cylinder. I have bleed the system more times than I care to say, But this situation has remained the same.
My question is "What else could be the problem?"
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if your line fittings are all tight with no leaks and the system isn't drawing in air,i would check into the firewall flexing where the clutch master cylinder bolts on,these trucks are well noted for flexing in that area and that will lessen the travel of the clutch fork which would make the truck hard to go into gear,have someone watch to see if the clutch master cylinder pushes outward when you push the clutch pedal to the floor,just my 2 cents
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If there are no leaks or other problems, keep driving it. Any air left in the system will slowly make it's way up the hydraulic line to the clutch master. You can never get all the air out manually.
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I thought I would update this post.
After several days of bleeding the clutch master cylinder and clutch slave cylinder. I stopped after my last reply because of bad health and weather, But finally I fixed this problem.
Instead of bleeding this system in the same exact way a brake system done.
I topped off the clutch master cylinder(Which is filling the master cylinder half full of DOT 3 brake fluid or 12mm from the top, Replace the cap afterwards)
Then I opened the bleeder screw on the clutch slave cylinder long enough for 3/4 of the fluid to escape. I never touched the clutch pedal.
I basically let gravity and head pressure push the air out of the system through the slave cylinder.
I continues repeating these steps for several hours.
Now the clutch works great.
After several days of bleeding the clutch master cylinder and clutch slave cylinder. I stopped after my last reply because of bad health and weather, But finally I fixed this problem.
Instead of bleeding this system in the same exact way a brake system done.
I topped off the clutch master cylinder(Which is filling the master cylinder half full of DOT 3 brake fluid or 12mm from the top, Replace the cap afterwards)
Then I opened the bleeder screw on the clutch slave cylinder long enough for 3/4 of the fluid to escape. I never touched the clutch pedal.
I basically let gravity and head pressure push the air out of the system through the slave cylinder.
I continues repeating these steps for several hours.
Now the clutch works great.
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vandm
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
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Aug 21, 2006 11:42 PM
