Re: For those who are interested "how does it look like inside?".
Your English is very good understandable. Thank you for the pictures. As a HT-newbie it is very important for me to understand the reasons why these engines are dying.
Was it the cage of the bearing or was it the spring of the seal that caused the damage?
You made the bearing seats with the center punches tighter. If this is necessary its a good trick.
Have a good evening - Multipaul