bluecyclone

Ok guys need some help here. Three days ago I'm in second gear stopped at a red light. Light turns and my foot slips off the clutch pedal. Clutch then goes all the way to the floor without engaging. This leads to a 80 mile trip home with no clutch. No fun. After doing some research I come to the conclusion that it might be the master/slave cylinder. I replaced the slave and master with a factory pre-filled unit. That went smooth, but when the moment of truth came there was still no going into gear using the clutch. There is good resistance but the pedal feels notchy in the fist couple of inches of travel. Could this be the throw out bearing? Truck has 143,000mi with original clutch. Any thoughts?

pind

If there is good resistance on the pedal, with the new hydraulics, that suggests to my untrained brain, that the hydraulics and the release bearing are ok. That said, I would just toss a guess out there, that one of the torsional damping springs in the clutch center, has fallen out, and ended up between the friction disc and the pressure plate fingers, causing the clutch to hang up.

Best bet, if you can take the slave cylinder out of the bellhousing, and snake a borescope up in there, you'll see what's going on.

Good luck.

bluecyclone

Thanks for the reply pind, I'm looking at just having the whole clutch replaced. Once its open might as well go all the way.

ronster

I just experienced the same problem. Unfortunately, it wasn't the clutch, but the pilot bearing on the end of the tranny going into the crankshaft. The bearing failed, cause the input shaft of the tranny to slip off the center of the pressure plate causing a less than optimal clutch disengagement when depressed. The bad news is the bearing damaged the end of the tranny input shaft and really needs to be replaced. The shaft itself is $600 plus a ton of labor since the entire transmission must be disassembled. Then there is the replacement of the clutch, pressure plate, throw-out bearing, and pilot bearing. I decided to polish up the input shaft end, replace the clutch, pressure plate, and throw-out bearing along with a new pilot bearing and hope for the best until I can trade.
Hopefully, this isn't your problem, but don't be surprised if it is.

bluecyclone

Ronster, was your failure instant or were there symptoms of the pilot bearing going bad?

CoastalDav

Ronster will get back to you I'm sure.

Pilot Bearing failure is usually preseeded by the tranny being hard to put into gear when stopped. And it might be real notchy at slow speeds when shifting.
The tranny imput shaft is stopped from turning or moving as you put the tranny in gear. If left like that, it will tear up the imput shaft which is expensive.

Dave

bluecyclone

Thanks dave, at the time of my failure everything seemed normal until the clutch pedal kinda popped back. At that moment i thought my foot had just slipped off the pedal.I am going to try to get it to a shop tomorrow. I would like to tackle this job,but it sounds over my head. Brant.