JD 2640 clutch release issues

I have a JD 2640 with a 3 button clucth, no HI-LO and independent (hydraulic shift) PTO. Flywheel, clutch disk, and pressure plate appear to be in good shape. The linkage free travel is adjusted per service manual. At full pedal travel and idle there is some grind to shift into gear. At PTO speed a gear change has to be done quick or I will have to idle motor to be able to shift without excessive grinding. The warmer the transmission oil the worse the issue. Seems like the clutch needs 1" more pedal travel to fully release. No idea how old the clutch is, how many hours is on it or how it was treated.

Internal wear in the pressure plate, set for nearly no throw out clearance, operator error, or common issue with utility series.

Thanks,
 
Split it for a rear main seal and to rebuild PTO clutch. It didn't release good prior to the split. Didn't get any worse, didn't get any better. Since it was a metalic clutch with very little wear and still questionable future as to if I would keep it I didn't put a main clutch in it. It has been torn all to pieces fixing hydraulic issues from years of neglect and old/hard o rings.
 
Those button clutches will warp unlike regular disks the buttons sort of twist.
Also they wear the pressure plate and flywheel faster than they wear themselves. Sometimes this causes them to drag around the edges of that worn down area.
I seldom reinstall metallic disks especially on loader tractors where you do a lot of clutching.
They are meant to engage positively on jobs such as plowing etc. and easing them in and out is like setting a grinder up to your flywheel and pr. plate.
There are also kevlar disks available but I doubt you will need that.
 

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