Broken Throwout Bearing

Has anyone dealt with this issue? I just put in a hydraulic clutch and at first the Jeep was great, but then it started to get worse and worse. So I took the transmission out to take off the clutch fork because I am going to drill a hole closer to the bellhouse to increase the throw on the bearing.

However, when I get it apart, I realize the bearing has been snapped apart.

Any thoughts?

Also, is there a bearing I should get that is different for the hydraulic clutch?

 

The hole in the clutch fork should be away from the bell to give more travel. Where did the bearing??? snap apart??? Got a pic.? You list a 66 cj5 is this what the clutch problem is in? I,m putting together a 66 v6 225 with 465. Is this a new hyd. system install or just replace what was there? Clutch fork needs to be 4-5 degree forward position of 90degree off bellhousing. You need about 1/16 bearing gap to clutch fingers. So that will tell you if the throwout is the right length. Too long will rub plate fingers and wear bearing premature. Too short and you might notice a bind when trying to move clutch fork forward. You can also change the bellhousing clutch arm pivot to move the fork front or back. Then you need to look at your linkage length on the master cylinder,pedal, and slave. It is a can of worms to work out. Where does your pedal get hard at what part of stroke? Where are you located?

 

This is for a 225 with a t90.

The bearing part sheared off clean from the tube that it is connected to that has the clips for the fork.

The system is brand new and I just bolted it up without measuring anything because I figured if it was fully disengaged, it would stop the slave from moving. The pedal was easy all the way to the floor and would stop just shy of hitting the floor/firewall.

The throwout bearing was new 7 years ago when I rebuilt everything. It worked fine back then and I only put 700ish miles on it before I took it all apart again to add the hydraulic setup and hanging pedals for disc brakes.

I will try to get a picture of the throwout bearing today and get that up here. I am located in Russell, MA.

 

I,m having trouble with the hydraulic pushing too far forward on the pressure plate and I need to adjust my linkageto NOT OVERSTROKE THE PRESSURE PLATE DIAGHRAM!!!! Maybe you are overstroking and overstressing the old bearing Center Force clutch i have only needs 3/8 travel to disengage plate. Try new bearing and look at the fork travel or measure your slave travel to see if it is traveling too far forward to overstroke. I,m waiting for new clutch fork. I,m researching fork pivot to linkage connect point should be about 6 inch. What is your fork length? Be carefull with fork, I broke the one of the pivot clips. I,m also finding I need the castiron arm not the pressed one.????

 

Has anyone used the Novak adjustable release bearing on their t90?

Seems like this is a great way to go

 

I have taken apart a lot of Jeep clutches and have yet to see a throwout bearing do what you described. Going to guess it was a bad bearing (Omix-ada?). Even if the clutch linkage was allowing it to travel too far forward, that should have been pressing on the bearing portion, not causing it to separate.

You should try to find a stock bearing carrier and press on a new bearing. That said, I am not sure what the parts availability is. However, the Novak unit sounds like a good way to go. I have yet to ever get anything from them that didn't work well.

 

Here is a pic of the Release Bearing and how it sheared off:

 

I looked at things a little closer yesterday and I am now wondering if the Hyrdraulic set up pushed the bearing too hard into the fingers, causing the bearing to break off. This might explain why it ran well at first, but slowly got worse the more I pushed on the pedal. So, the break may have happened over time as I pushed on the pedal forcing the throwout bearing into the clutch plate fingers.

Does this make sense to anyone?

I would like to figure out exactly why this broke before I put everything back together.

Any advice would be much appreciated.

 

Just get another same bearing and hub assembly. Take with you when purchase to get the same length assembly. Go back to my thread about the throwout spacing and pressure plate release. Call the clutch company and ask them what travel is required to release clutch. Put it back together and push pedal down with fork linkage not connected. This will show your total slave and pedal travel. Now hook up fork to linkage and check travel to Hard spot. If you can,t go the same distance as disconnected. It is probably too much slave travel. Try adjust linkage. Or I,m thinking of removing piston from slave and machine a longer piston so it can,t overstroke. You,ll probably need to mod the conn. at the pedal so you can get the proper push down distance you want. That bearing break is strange!!! GET BACK