To replace the right drive oil seal, special mandrels are required, one of which centers the oil seal on the shaft, preventing damage to the inner edge of the oil seal, and the other ensures that it is pressed in to a certain depth.
Sequence of execution
1. Place the vehicle on an inspection ditch or overpass and prepare it for work (see "Preparing the car for maintenance and repair").
2. Remove the front drive (see "Front Wheel Drives - Removal and Installation").
3. Using a mounting blade or a large slotted screwdriver, remove the faulty seal.
Original text on the website (LadaMan)

Warning! The edges of the mount must not have sharp edges. When removing the old oil seal, try not to damage its seat, otherwise leakage may occur along the scratches.
4. Inspect the surface on the outer hinge body along which the working edge of the seal operates. There should be no visible or palpable damage to it, nor should there be any annular wear. Otherwise, the inner constant velocity joint (see "Wheel drives - checking the technical condition") also needs to be replaced.
5. Apply grease to the seal seat and the seal itself. We press it in with light hammer blows using a socket wrench with an outer diameter close to the outer diameter of the seal.

Recommendation. You can use the old front wheel drive oil seal as a mandrel.
Warning! The blows should not be too strong. The seal must be pressed in gradually, avoiding distortions.
6. After pressing, remove excess grease. We install the drive assembly on the car (see "Front Wheel Drives - Removal and Installation").
7. After finishing the work, check and top up the transmission oil level in the gearbox (see above, "Manual transmission - checking the transmission oil level").
