D2 5U Front PTO Questions

Hello,
Moving on to the next project on my D2. Last project was replacing the clutch disk between the pressure plates. Because this 5U is the earlier version, I had to remove the diesel motor which required taking off the front hydraulic pump (model 44). Upon removal, I noticed the PTO shaft was very wobbly. I’m having trouble researching diagrams and potential needed repair parts. Any direction is appreciated.
Thanks

Is the play in the Yoke or splines - the u joint is standard parts store item. Bob

What's the #44 s/n?
They use a gear type coupling the would normally be floppy without the shaft support of the mounted hydraulic unit.

Serial # is 9W493

Mounting group details....