1 have been working on 5211 first engine then clutch now the pto.removed transmisson top also hydrauliac lift top.removed bolts in rear of pto shaft pulled bearing out until gear for pump hit back of gear housing. manual shows hollow shaft with gear on back end front end has shifter fork.my guestion is should the back pto shaft pull out of the shaft with the gear that drives pump.i cant get it to move acts like its stuck.has 540+1000 rpm pto.pto and lift worked couldnt select lift only pto still turned.. thanks for any help i get. jim