Hang and remove the rear wheel.
Remove the brake drum assembly with bearings (see Replacing the brake pads of the rear wheels).
Do not depress the brake pedal after removing the brake drum, as the pistons may completely come out of the wheel cylinder.
Remove the inner ring of the outer bearing with the cage and rollers.
From the inside of the brake drum, pry the oil seal with a screwdriver..
...and take it off.
We take out the inner ring with the separator and rollers of the inner bearing from the brake drum.
We look at the bearings.
In case of damage to the inner or outer rings, rollers, wear of the separators, we replace the bearings.
For this…
... through the beard we strike at the end face of the outer ring of the bearing..
... in places where there are two notches in the drum..
... and press the ring out of the brake drum.
Through the beard we strike at the end of the other outer ring of the bearing..
... and press it out of the brake drum.
We check the condition of the seats of the outer rings of the bearings in the brake drum.
We press the outer rings of new bearings through the mandrel (as a mandrel, you can use a tool head or a piece of pipe of a suitable size).
We put grease between the bearing rings and apply it liberally to the bearing rings.
We press the stuffing box after installing the inner ring with the cage and rollers of the inner bearing.
We install the brake drum in the reverse order.
Adjusting rear wheel bearing clearance (see Rear wheel bearing adjustment).