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).

Replacing the seal of the drive gear of the gearbox

Unpin the cotter pin of the drive gear shank nut

Replacing the seal of the drive gear of the gearbox

With a 24 head unscrew the nut, holding the flange of the tail with a gas wrench

Replacing the seal of the drive gear of the gearbox

Remove the washer, prying it with a screwdriver

Replacing the seal of the drive gear of the gearbox

Tapping with a hammer, remove the flange of the drive gear

Replacing the seal of the drive gear of the gearbox

Using a screwdriver, pry up and remove the cuff

Replacing the gearbox pinion seal

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.

Replacing the seal of the drive gear of the gearbox

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.