How to disassemble the rear axle gearbox VAZ-2121

Remove the rear axle gearbox (see the article – Removing the rear axle gearbox)

Install the gearbox on the workbench

Use a 10 key to loosen the bolt securing the locking plate of the adjusting nut of the right bearing of the differential box

Remove the plate.

Also remove the plate on the left side.

Mark with a center punch location of differential box bearing caps on gearbox housing

Using a 17 key, unscrew the two bolts securing the right differential box bearing cover

Removing the bolts

Removing the right bearing cover

Removing the adjusting nut

Removing the outer ring of the gearbox bearing differential.

Similarly, remove the cover, take out the adjusting nut and remove the outer ring of the left bearing of the differential box.

If we do not change the differential box bearings, then mark their outer rings so as not to mix them up during assembly.

Remove the differential box assembly with the driven gear of the main gear, inner rings, separators and rollers bearings.

From the gearbox housing, we take out the drive gear assembly with the adjusting ring, inner ring, separator and rollers of the rear bearing and spacer sleeve

Remove the spacer sleeve

Hit the inner ring of the rear bearing of the gearbox with a hammer through a drift

Removing the inner bearing ring

Remove the adjusting ring of the drive pinion.

Remove the oil seal from the gearbox housing socket (see the article - Replacing the oil seal of the drive pinion of the gearbox)

Remove oil deflector

Removing the inner ring of the pinion bearing

Using a punch, knock out the outer ring of the front bearing of the pinion gear

Take out the outer ring of the bearing. Turning the crankcase over, we also knock out the outer ring of the rear bearing of the pinion gear

To disassemble the differential, we press off the inner ring of the differential box bearing with a puller.

If there is no puller, insert a chisel between the end of the inner ring of the bearing and the differential box

By striking the chisel, we move the inner bearing ring

Insert two powerful screwdrivers or mounting blades

Press off the inner bearing ring.

Also press off the inner ring of the other bearing.

Having clamped the differential box in a vice with soft metal pads, use a 17 key to unscrew the eight bolts securing the driven gear to the differential box.

Using a hammer with a plastic striker, knock the driven gear off the differential case

Remove gear

Removing the satellite axle

Turning the satellites, we take them out of the differential box

We take out the axle gears

Removing the thrust washers

Washing the gearbox parts, inspecting and reading the article on checking the condition and assembling the gearbox.