Clutch?slave cylincer issue?

[joekayakguy]

1989 F150 extended 4.9 M-50DTrans Borg 13-56 Tansfer case. Replaced Clutch, Slave Cylinder, seals back in July. Ran fine untill about a month ago. I stopped, and couldn't get it into gear with engine running and Clutch peddle depressed. Went into all gears fine with engine not running. I tried re bleeding the Slave cylinder and it did no better. Put it into 1st with engine off & clutch depressed and started it. It rolled for about three feet and stopped rolling. I was able to get home. Still the same problem. It started making a rubbing noise? I was thinking I may have not tightened the flywheel bolts enough, and one started backing out engaging the transmission? Or perhaps some Clutch material was delaminating again causing the Trans to engage and not be able to shift due to syncronizing problems? Just took it apart. Clutch is fine, bolts are fine. No leaks in slave? The only thing I noticed wrong was one needle bearing fell out of the Pilot bearing I had replaced? The only other thought is the slave is not providing it's full travel to disengage the clutch? What are your thoughts???

Thanks, Joe

 

[smokey]

Could be a bad clutch master cylinder. That is mounted on the firewall.

 

[Fellro]

The master is prone to fail as well, may as well try there. How does the pedal feel? Do you have good pressure?
If it feels weak, it likely is not building good pressure. Since yours is an internal slave, it is hard to see the travel to verify it is actually doing anything.

 

[joekayakguy]

When the problem initially presented, I took out the rubber bell housing plug and verified there was indeed travel from the throw out bearing. The bearing was depressing the clutch tines with and without the engine running. Had I been smart I would have measured the travel of the bearing. Thinking back the pedal did not offer as much resistance after I replaced the slave and everything else below. I assumed the "new slave, new feel?" You know what they say when you *** u me.... In this case it was only "me".

Hmmm??? If I were someone else reading this, Id' be thinking this is a bad case of STBY (Sucks To Be You) LOL! Perhaps I should have asked this question before I took out all the truck guts in the driveway? It's cold :-( I'll replace the Pilot bearing and put it all back together.

Thanks Guys. I really appreciate your wisdom. If a new idea pops up, let me know before I get it back together.. Pleeeeese.

Joe

 

[Fellro]

Sometimes new clutches have new feels. I know when I went from a Valeo clutch to a Luk, the feel was totally different, and it scared me because I though it was bad, but it works fine, just not as hard on me... However, it sounds like you either have an air pocket or bad component.

 

[73F100Shortbed]

I would say possibly the master cylinder. I wouldn't really think the pilot bearing is going to give you an engagement problem. I would check into other things before pulling the trans. to replace the pilot bearing.

 

[Fellro]

Pilot bearing won't give engagement issues, but could cause shifting issues. My T19 used to be a bear to shift cold, and I would sometimes have to grind a gear to get it in, thought it was bad synchros, but after replacing the clutch and pilot bearing, it shifts nicely.

 

[joekayakguy]

Thanks,
When this started I verified travel in theThrowout Bearing, I bled the system again thinking "air pocket". The situation did not improve. I know of no way to test a Clutch or Slave to see if I am putting bad parts back? It all looks good to my eyeballs? In order to save time, I pulled the Trans and Transfer case as one unit with fluid still in. That turned out to be one very large package. I think I may have to seperate them to get them back in :-(

Joe