Removing the seal
Carefully tap down the tool ( 9997219 ) in the bottom of the shift shaft.
Tighten the bolt on the puller.
Screw in a new M12 bolt in the top of the puller until the seal releases.
Remove the seal.
CAUTION:
Clean away any rust from the shaft.
Use grinding cloth 951 1024 or a very fine emery cloth to clean the shaft.
Clean around the shaft with isopropylalcohol and blow it clean with compressed air.