Clutch Issues
 

On my 89 F-250 4x4 Diesel with a ZF 5 speed the clutch is not disengaging. The clutch does not slip at all and I have a feeling that it has something to do with the slave cylinder not moving the clutch lever enough. What I need to know is the amount that the slave cylinder is supposed to push the lever. Anyway I posted here because I normally get good response from you guys in the Off-Road section. Thanks

i am not 100% but i think you might be able to find your answer here http://fordtrucks.com/lc/lc.php?acti...3d800a3bdc.jsp

:-X03 good luck

-cutts-

thanks for the link fishmann, but I have all that info already. What I need is the amount the slave cylinder should push the release lever ex. 1 inch half inch I don't know. I have bled the system and might try bleeding it again, but I need something to shoot for. If it pushes the release lever at the length that is required than it is something wrong with the clutch. But without that measurement I don't know. Thanks for the link though it gives a better discription than the haynes manual.

my 94 does the same thing. doesnt need bleed, doesnt slip or chatter, just doesnt engage all the way likes to creep a little. i cannot figure it out, im thinking its just not pushing it far enoug. ive also hear it could be the throw out bearing getting wore out.or maybe a bent clutch arm. to cold and nasty out right now to crawl under the thing to check it out.

just do be sure, you can't take your truck out of gear at all, right?

fords have trouble with the internal slaves, and I believe your ZF5 has an internal slave cylinder. you'll have to pull the tranny to check either one of them out.

no it external, so its easy to check.i cant take it out of gear and put it in gear but it can be a pain sometimes but only sometimes.

No going in gear or out of gear just lots of grinding. And it is external. Which is why I need a measurment for the travel of the slave cylinder so that i can compare it against mine.

have you crawled under it to see how far it does travel. it might be something else. like tranny issues

Yup I have crawled under and I don't think that it is tranny issues. It is probably most likely clutch issues.

here is an easy way to tell, at least imho. If the clutch pushs in normal (as in feel), and it won't disengage, the clutches springs are more than likely fubar'd. if you push in the clutch and it sinks to the floor or feels like a sponge, it is the slave / master cylinder.

btw, if you look in haynes, it will tell you the clutch travel measurements, and least mine does. I'd look it up now, however, my dad (45 minutes away) has the book. I think it only has to move ~3/4". It isn't much at all.

After I had to drive 15 miles starting the engine in my F150 in granny gear on the flat surface to get going, I knew it was the slave / master. I replace them both (~$100) took me about 2 hrs (including bleeding). NAPA has the quality slave with a brake type bleeder on it. ignore the instructions, install everything, fill with fluid and bleed it until it is solid. (5-10 minutes of bleeding, tops).