2. Remove cardan shaft (front or back).
3. Uncheck (fold back the bead) (photo on the left) and loosen the flange nut (photo on the right).
4. Remove the flange, use a puller if necessary.
5. Carefully pry up and remove the seal.
6. Lubricate the lips of the new oil seal with petroleum jelly.
7. Press in the seal with a mandrel.
8. If necessary, replace the small flange seal in the same way.
9. Further assembly is carried out in the reverse order.