Removal
1. Remove the flywheel (see "Flywheel - removal and installation").
Warning: When performing the following operation, be careful not to scratch the running surface of the crankshaft.
2. Using a special hook or carefully prying it off with a screwdriver...
...we remove the crankshaft oil seal from the mounting hole.
Installation
1. Apply clean engine oil to the working edge of the new seal and press it evenly until it stops using light blows from a hammer with a plastic striker.
[Full article on the website ladaman.ru]
Recommendation. You can also press in the seal with a regular hammer, using the old seal as a mandrel.
2. We carry out further assembly of the engine in the reverse order of disassembly.