Ayr Queensland Australia 4807 | George, How bad is the female spline ,They can be pretty loose. If you are chasing vibration pull the rubber drive damper out and clean the dirt out of it and the flywheel ,To do the shaft and bearing pull the front off the box ,i would split it it is much easier to do but you could pull the front off in their. While in the area change the roll pin in the clutch valve spool. i see from tractor serial 30,000 they went to male shaft in thebox like 7600 to 7800 machines |