1964 clutch problem continues

[Jack J.]

Re: 1964 clutch problem continues

Rich, pulled back trans today and removed bearing which by the pic is damaged already. The pics shows new bearing on the right with the old on the left. I noticed BOTH bearings are distorted 180 degrees opposite the lobe on the bearing inner surface. JackJ.

[Jack J.]

Re: 1964 clutch problem continues

Rich, Pic of lobes on both bearings. What is the purpose of the cam- like lobe?

[Richard M.]

Re: 1964 clutch problem continues

Jack,

Did you see my question about your fork pivot ball?

Pics tell me...
Possible fork issue or possible pilot bushing issue.

Rich

[Richard M.]

Re: 1964 clutch problem continues

Rich, Pic of lobes on both bearings. What is the purpose of the cam- like lobe?

Jack, I'm not sure but I think those are for the machining process, to hold the piece steady to bore and mill the material.

What I see in both of yours may be the result of fork damage and/or misalignment of the fork fingers and tension clips. Also, there should be some grease where the fork touches the bearing inner face, and also packed on the inside groove of the sliding surface to to trans input shaft. Without this area lubricated, the bearing could hang up on a dry shaft. Ref doc from CSM....
1967ClutchThrowoutBearingSize-6-2-160002.jpg

Here is a example of fork to bearing misalignment on a '66 I worked on years ago. The fork was installed improperly years prior. The car ran this way for quite a while before I discovered it during a body-off and frame replacement.

P8010012.jpgP8010013.jpgP8010011.jpgP8010014.jpg

Since Now you have yours all apart, please post some photos of the clutch fork, top and bottom views, finger tips and clip ends, side profiles showing the arm angle at the rod end. Also the backside pivot ball socket area and ball capture U-clip fingers.

Rich

[Jack J.]

[Richard M.]

Re: 1964 clutch problem continues

Jack, see last paragraph of my last post after my bearing photos.

[Jack J.]

[Richard M.]

Re: 1964 clutch problem continues

Jack I don't understand your last post. This was what I was asking....

..... "Since Now you have yours all apart, please post some photos of the clutch fork, top and bottom views, finger tips and clip ends, side profiles showing the arm angle at the rod end. Also the backside pivot ball socket area and ball capture U-clip fingers."

[Jack J.]

Re: 1964 clutch problem continues

Rich, at this point I have not removed the bell housing. Took the day off from this fiasco. Jack J.

[Jack J.]

Re: 1964 clutch problem continues

Jack, I'm not sure but I think those are for the machining process, to hold the piece steady to bore and mill the material.

What I see in both of yours may be the result of fork damage and/or misalignment of the fork fingers and tension clips. Also, there should be some grease where the fork touches the bearing inner face, and also packed on the inside groove of the sliding surface to to trans input shaft. Without this area lubricated, the bearing could hang up on a dry shaft. Ref doc from CSM....
[ATTACH=CONFIG]113448[/ATTACH]

Here is a example of fork to bearing misalignment on a '66 I worked on years ago. The fork was installed improperly years prior. The car ran this way for quite a while before I discovered it during a body-off and frame replacement.

[ATTACH=CONFIG]113444[/ATTACH][ATTACH=CONFIG]113445[/ATTACH][ATTACH=CONFIG]113446[/ATTACH][ATTACH=CONFIG]113447[/ATTACH]

Since Now you have yours all apart, please post some photos of the clutch fork, top and bottom views, finger tips and clip ends, side profiles showing the arm angle at the rod end. Also the backside pivot ball socket area and ball capture U-clip fingers.

Rich

[Stephen L.]

Re: 1964 clutch problem continues

Jack, From your photos, I believe your clutch arm is NOT correct for this application. The distance from the pivot ball location to the centerline of the bearing is too short resulting in the damage to the bearing lip. I've posted a photo of my clutch arm/bearing and there is clearance in that area.

[Richard M.]

Re: 1964 clutch problem continues

Jack, From your photos, I believe your clutch arm is NOT correct for this application. The distance from the pivot ball location to the centerline of the bearing is too short resulting in the damage to the bearing lip. I've posted a photo of my clutch arm/bearing and there is clearance in that area.

Yes it certainly appears if the assembly was positioned that way in the bellhousing , then that is the problem. The fork holding tabs are not centered on the bearing.

Jack, check the photos here in this thread, Post#1, the foreground photo is a C1 fork, the background is a 64-81 fork. set yours in the same profile as those and take a photo and post it here so we can compare.

Also Post#2 HERE.

Where did you get that fork? It looks new.

Rich

[Jack J.]

Re: 1964 clutch problem continues

Rich, UPDATE: New clutch, new bearing & pics

[Jack J.]

[Stephen L.]

Re: 1964 clutch problem continues

Jack,
A suggestion; If you have the bell housing off the engine, try mounting the transmission on the bell housing, installing the various clutch arms you have with the new throwout bearing slipped over the trans input shaft and see if the bearing is centered on the shaft while moving the arm as if depressing the clutch pedal. Is the ball "socket" location the same dimension from the semi-circle edge on all 3 arms. It's hard to see in your photos