Pressure plate adjustment, Ford NAA

Rex Clonts

New User
Is there an adjustment for finger height on a NDA7563A pressure plate? Replaced the worn-out clutch in my 641 with a new kit including the 10"-10 spline clutch disk, release bearing, pilot bearing. Everything went back together fine. It will not release. I've adjusted the petal height and free play every way I can. Pulled back apart and can see no issue except the pp fingers height appear lower than the old one. But I see no adjustment except the 3 contact screws which does not seem sufficient to achieve release.
Suggestions please.
 
I went through a similar situation with my '51 8N. The clutch would not disengage. When I split the
tractor, the parts looked to me to be functional but I bought all new clutch parts anyway.
I replaced everything and assembled the tractor. Same problem. I split and rechecked everything 3
times. Same problem! GRRRRRR!
I talked to a mechanic. He said to examine the external linkage. I did. Well DANG!
The short lever pinned to the throwout shaft was cracked on the bottom side, not visible standing by the
tractor. I had to have son sit on the tractor and depress the clutch pedal while I was bent down low to
look underneath. Well Shoot! (not my exact word).
There was a crack in the lever that opened up when the clutch was depressed but closed again when the
clutch was released. It opened enough that the clutch would not release.
As a reminder, I have kept that broken part as a reminder to look for the simple things first.
 

641 is not a NAA if it has a 4 speed trans my best guess is the finger height from the flywheel is 2" the same as a N are NAA...

You may get better than a guess if you post on the Ford forum side on YT...
 

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