We replace the cuff if there is an oil leak from under the flange of the pinion gear
Before replacing the oil seal, you need to make sure that the rear axle breather is not clogged (if the pressure in the rear axle housing is increased due to a clogged breather, the oil seal may not hold oil).
We install the car on an inspection ditch.
We remove the cardan transmission (article - Design and repair of the cardan transmission) (you can only unscrew the bolts securing the cardan flange and the pinion gear flange and move the rear part of the cardan to the side).
Unpin the cotter pin of the drive gear shank nut
With a 24 head unscrew the nut, holding the flange of the tail with a gas wrench
Remove the washer, prying it with a screwdriver
Tapping with a hammer, remove the flange of the drive gear
Using a screwdriver, pry up and remove the cuff
After lubricating the edges of the new seal with Litol, we press it in using the old seal as a mandrel
The seal used is catalog number 24-10-2402052
The seal must not be pressed in too deeply. Its outer end should be flush with the edge of the hole in the gearbox housing.
We install all the parts in the reverse order.
Tighten the tailpiece nut with a torque of 16-20 kgf.m until the slot in it coincides with the hole for the cotter pin.