12-28-2019, 02:38 PM
They don't show a great amount of detail about the lead screw in the parts breakdown I found but I am guessing that shift collar (9-50A) has to be keyed or splined to the lead screw. Also note that the left drive gear (9-48B) appears to be pinned to the stub (9-52A). That is possibly another shear point as well. Taking it apart should reveal all.
Willie