NH 488 wobble bearing repair

Hello,

I am doing some research for my husband who is out tearing down the 488. He was mowing a field this morning and hit a rock and now his wobble bearing needs replaced.  He thinks it is self explanatory but wanted me to do a search for a you tube video or anything about this repair and I can not seem to find anything. I believe the 472,447,478 and 479 are similar so if anyone can provide any knowledge regarding this we do appreciate it.  New Holland 488 Haybine mower-conditioner.

NH 488 wobble bearing repair