clutch problem

J

johnmi

Member
Installed a new engine with a lightened flywheel-w-V8 clutch & a new clutch disc assembly with caged in springs. Started engine which ran well but was unable to put into any of the gears. While trying to start the car in gear it wont start although it tends to move because the clutch is engaged. I think the problem is that the fingers on the pressure plate are hitting the springs on the clutch disc. If that's the case, what is my solution? Another ?, Does the flat part of the clutch release fork that pushes against the throw out bearing, face the fly wheel or the back of the car? Thanks, john
 
Did you bolt the disc and pressure plate to the flywheel and measure the fingers for proper adjustment? I can't imagine the fingers touching the springs, but if the plate is in backwards I can see the springs hitting the mounting bolts for the flywheel.
 
If I understand your question, the flat part of the release fork should face forward. If you can post a picture it might help with some answers.
 
The last sentence bothers me.. The release/throw out bearing can or should only mount on the fork one way.. The machined portion of the bearing is what rides against the pressure plate fingers.. The clutch disk should only properly fit one way..
 
Tom, I did bolt the disc and pressure plate to the fly wheel and measured the fingers for adjustments. I asked Ford barn for specs, but no answer. Snyders did not know the specs, but told me they were preset correctly. Plate is not backwards. John
 
I have seen a washer put between preasure plate & flywheel in order to bring fingers out towards the thrust bearing, Your fingers may be too close to clutch plate asuming all else is correct, I had asked some question also on this , My problem was the 3 bolts that thrust bearing contacts had never been staked & wound themselves out, Looks like your trans will need to come out however you can see through inspection plate beforehand if ajustment is all working correct, Let us know what you see in there,
 
These are the 3 studs (bolts) on the end of the fingers that the thrust bearing contacts' We are talking on a V8 preasure plate. Mine had not been staked, that means puched so as they can not wind in or out, this could alter the ajustment . Hope this explains , If not turn computer upside down to allow mesage from down under to read right ( joke) Derek
 
James, I am going to take your advice and pull the clutch assembly to make sure it is installed correctly. I would appreciate it if you could explain what the finger adjustments should be and how to check them (so a 77 year old amateur can understand it). Thanks for your help. John
 
John, you can look into the inspection hole at the bell housing to see if the disk is in correctly. You will need to let me know which pressure plate you are using, a modern one or an original and some pics would help.

If the disk is in correctly, you would push the pedal almost to the floor before feeling it contact the pressure plate fingers for it to not release. If it is in backwards, the springs would interfere with the flywheel bolts and lock it up, causing it to not release.
 
James it looks like the small hub is facing toward the back of the car. I think I am using the Modern pressure plate bought from Snyders. The disk is from Brattons with the springs caged in. Thanks John
 
The throwout bearing does press on to the fork.. The machined portion of the bearing then will ride against the fingers on the pressure plate.. It just sounded to me by your last sentence that the bearing may not have been installed correctly..
 
ClutchDisc1_zps8544d67a.jpg


ClutchDisc2_zpsb4c97bcd.jpg


Here is a new 9" clutch disc I bought at a swap meet. As you can see the 8 springs are totally encapsulated so they can't come out of position. Also notice the 4 fingers sticking through openings to limit the amount of rotational movement between the hub and lining. The only markings on it are: B-N Pat. No. 2284278

No part of the flat side (shown in the second picture) extends beyond the surface of the lining. This flat side always faces the flywheel. Before installing the disc be sure it slides easily on the ****** input splines. One or the other may have rust or nicks that causes binding. And, never let the ****** weight hang off the clutch disc, as this may warp it and cause it to not release fully.

Also make sure you are using the correct clutch release bearing hub (A-7561-B). The one for the AA trucks is shorter.

Did you get an answer or figure out the correct way to install the clutch release shaft fork (A-7515-C)?
Can this even be installed incorrectly and be pinned in place? I don't have one handy to check.
 
John, this was covered recently and I posted some pictures. I believe this dimension is 1/2-5/8". I will look for the previous discussion and post a link.
 
Another thing to add to Tom's Part number info.

Ford used the same "basic" part number for a number of models and years.

As an example:
A-7515-C Is for Model A


48-7515 is for V8 fork ... totally different part but shares the "7515" with Model A fork.
The 48 tells you that it is for a V8.

The shape and angle of forks is different.
 
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