An A&P coached me thru the installation.
1. Clean the alum seating surface with grey scotch brite to remove any previous residue. Also, you can use MEK to help if needed. I didn't need it.
2. Clean alum seating surface with brake cleaner.
3. Visually inspect to verify it's very clean.
3A. Place the rubber seal in hot water.
4. Place some easy release tape on the shaft to protect.
5. Apply Pliobond to the alum horizontal surface but not the aft vertical surface.
6. Remove tape.
7. Hook spring over shaft
8. Apply a very light coat of axle grease on the shaft.
9. Place a short alum tube thru the flange bolt hole.
9A. Place a plastic grocery bag over the flange.
10. Remove rubber seal from the water and hook it over the short alum tube with open channel downwards.
11. Hook the seal stretch tool (90 degree elbow heavy grey conduit with slot cut on the convex side) and stretch the seal around the flange.
12. Work the spring into the seal groove with a 90 degree pic.
13. Coat the outer surface of the seal with Pliobond.
14. Push the seal into place until it engages a small groove. You can feel it seat.
15. Let it rest for 24 hr.
16. Take your A&Ps to lunch, Sam and Ray.
Total time: 1 hr 20 min
A nice learning experience.