grinding chip from pilot bearing on clutch fingers at idle

[surffj62]

EDIT- NOT Pilot but rather throw out beaing-

At idle I tracked down a annoying chip- louder at times than others but not good at sounding- thought it was a piston draging in a cylinder or something. Anyways it is the throwout bearing sitting lightly and rubbing on the clutch fingers. I can hold the fork that pushes the bearing and it will stop- it is as if it is not springing away as it should after clutch engagement. New slave unit- 4 months or so in fact a the tranny is 4 months old. Been doing it for awhile but finally figured out what was going on.

Tried lubing dust boot that the fork runs though.

New H55F Cool cruiser slave cylinder.

Thanks

 

[2mbb]

I won't be much help. In my nomenclature the pilot bearing is pressed into the back end of the crank shaft and it is what supports the tip of the transmission input shaft. The bearing that pushes on the clutch fingers is the throw out bearing.

It could be your clutch is not fully disengaging. when not engaged you should have some freeplay in the pushrod that comes out the nose of the slave.

 

[surffj62]

Yep throw out bearing-

lots of free play from slave rod- almost to much i think seems really loose but i guess that is how it is suppossed to sit. I would have made it so the rod had a retainer pin or something where it butts up to fork arm cup.

 

[Cruiserdrew]

Which bellhousing did you use? The 3F bellhousing and the associated slave/fork/throwout are not adjustable.

In my view, you are better off using a 2F bell housing and early 2F master/slave, since the slave has an adjustable operating rod for the clutch. The 85+ slave is not adjustable. 84 and earlier use an adjustable slave, and maybe you could retrofit that.

 

[surffj62]

Well I have to believe that it was swapped out for a 2f bell housing- Randy of RTCustoms did the swap and I believe that he had did a few before. I got the housing from him.

I did get the master and slave as part of a kit from CCOT that was for a 87.
Would it be possible to repalce just the slave cylinder or does it need a new master as well?

 

[FJ60Cam]

The later style clutch systems are adjusted at the clutch pedal itself (the rod goinging into the master).... it should be set so there is a small amount of freeplay at the pedal.

But, it sounds like you already have freeplay in the system...

Is the bearing new? Does it still make noise when you engage the clutch?

 

[Cruiserdrew]

Well I have to believe that it was swapped out for a 2f bell housing- Randy of RTCustoms did the swap and I believe that he had did a few before. I got the housing from him.

I did get the master and slave as part of a kit from CCOT that was for a 87.
Would it be possible to repalce just the slave cylinder or does it need a new master as well?

The mounting system for the slave is different, so not just a direct swap.

On the bellhousing-85 up is a 3F bellhousing-has a large cast 3F on the top of it. I have not tried to mount the earlier slave to one, but I don't think you can without mods.

I have a 3F and a 2F bellhousing loose in the garage, if I get a chance I'll try and compare the slave mounts and post up.

 

[lehiguy]

3F and 2F bellhousings can swap, I prefer the 2F because it keeps the T-case up higher for better clearance. The slave cylinder rod changed at some point in production. Earlier versions had an adjustable rod, later versions did not. My 60 made a chirping noise the whole time I had the 2F in it and I know it was the light contact between the release bearing and the pressure plate. This never seemed to go away, nor did it seem to result in anything bad. The real fix would most likely be a return spring on the release arm, situated in such a way as to move the bearing away form the pressure plate no more than about 1/16".

 

[surffj62]

I am almost 100 percent sure we swapped housings as we went from a440f auto to h55f- sor diagrams show a spring but I did not see any yesterday- I will pull the cover plate and see if it has one inside. Would not be surprised if it was missing....

Glad to know that others have had this issue and it is more of a nusance.

 

[pappy]

I have this problem. What I was told is there are those little clips that hold the throw-out bearing retainer to the fork. Those clips should have been greased. Not sure how true it is, but that chirp annoying.

 

[cherbini]

I have the same intermittent chirp as well....6/86 FJ60

I removed the inspection cover, and could see it was where the slave cylinder pushrod touches the clutch fork.

Just touching the clutch pedal makes it go away.

It sounds like an adjustable slave cylinder push rod would help.

Would love to see a clean, easy fix for this one.

 

[surffj62]

I think fabing up some type of retun spring is what is needed - the push rod works fine on the push- it is the return of the fork not springing back enough to get the bearing off the plate fingers.

I can't believe how easy it is to pull the slave rod out from it's little boot. Unless that is part of the problem!

 

[Granite Grinder]

Could you swap slave rods? The earlier ones had an adjustment on it, just curious if you could swap the rods around. Of course, I'm sure I'm not the first to think of this