Bad Slave Cylinder?
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Mountain Pass
Joined: Feb 2003
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From: UP of Michigan
Bad Slave Cylinder?
I recently bought a '88 F150 with a 300 I6 and 5speed. She has plenty of miles (over 200K) and runs great. The problem is that the clutch started slipping after driving just a few times...and it gets worse each time. The pedal [slowly] engages high then it'll slip while in gear under acceleration. I know and trust the original owner, so the clutch was working just fine, but the truck was parked for about a year. In fact he thinks he had a new clutch put in a couple years ago since the throwout bearing went. (He has a lot of trucks to keep track of)
Can a hydr. clutch go bad that fast??...or how can I check the slave cylinder? Someone else mentioned a cracked pressure plate. BTW, there's no fluid leak that I can tell and it's full.
Thanks for any help. I don't want to pull the entire drivetrain right away if I don't have to.
Can a hydr. clutch go bad that fast??...or how can I check the slave cylinder? Someone else mentioned a cracked pressure plate. BTW, there's no fluid leak that I can tell and it's full.
Thanks for any help. I don't want to pull the entire drivetrain right away if I don't have to.
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For the slave to be involved, it has to be sticking in the "on" position to keep pressure on the pressure plate to make the clutch slip.
This sounds odd to me, but is probably not impossible.
Otherwise, it is as you say, cracked Pressure plate or glazed disc.
Or the disc is worn out.
Anyway you look at it, because your slave is inside the bell (right?) it's tranny pull time.....
Unless your master is bound up and not allowing the slave to return... You may need someone to work the clutch, but you should be able to see that looking at the linkage from the pedal to the master and how it all works.
This sounds odd to me, but is probably not impossible.
Otherwise, it is as you say, cracked Pressure plate or glazed disc.
Or the disc is worn out.
Anyway you look at it, because your slave is inside the bell (right?) it's tranny pull time.....
Unless your master is bound up and not allowing the slave to return... You may need someone to work the clutch, but you should be able to see that looking at the linkage from the pedal to the master and how it all works.
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Mountain Pass
Joined: Feb 2003
Posts: 158
Likes: 7
From: UP of Michigan
I'm still getting familiar with the truck, but I guess if I don't see a slave cylinder on the bellhousing, it's inside... so I'm not too excited about that. I have a feeling I'll be getting the chance to inspect all the clutch components soon... 
Are there any unique symptoms of a bad slave? A local mechanic told me that a bad slave may or may not have a fluid leak, and can feel like a worn clutch....And, that the tranny would have to be pulled to find out which it is.
Are there any unique symptoms of a bad slave? A local mechanic told me that a bad slave may or may not have a fluid leak, and can feel like a worn clutch....And, that the tranny would have to be pulled to find out which it is.
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dyingtolive
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
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Mar 29, 2012 11:56 PM
