A google search would net you the following thread:
https://www.ft86club.com/forums/show...=125848&page=2
Also:
- Disassembly:
https://demos.starbase7.net/t3Portal...M000000T5703FX
- Re-assembly:
https://demos.starbase7.net/t3Portal...M000000T5303HX
And for any future DIY maintenance, here's the Workshop manual ( @
Ultramaroon , thank you

):
https://demos.starbase7.net/t3Portal/
PS
Be VERY careful when cleaning/removing the old seal packing. Do NOT drop any residue/remains into the upper portion of the oil pan/oil galleries/engine guts.
I would cover the exposed timing chain area with a suitable, non-tearable protective foil/cloth/etc. to shield it against any scraped off residue.