We carry out the work on an inspection pit or lift.

In the car, remove the wires from the differential lock indicator light switch, for this:

How to remove and install the VAZ-2121 transfer case

Using a Phillips screwdriver, unscrew the four screws securing the plastic cover of the levers (the fifth screw is common with the fastening of the floor tunnel trim).

How to remove and install the VAZ-2121 transfer case

Pull and remove the gearshift lever head.

Similarly, remove the differential lock lever head.

How to remove and install transfer case VAZ-2121

Remove the rubber covers with the plastic cover from the levers.

How to remove and install the transfer case VAZ-2121

Remove the lower rubber cover.

How to remove and install the transfer case VAZ-2121

Disconnect the wires from the differential lock indicator light switch.

How to remove and install the transfer case VAZ-2121

Use pliers to unscrew the open-end nut of the flexible shaft of the speedometer drive

How to remove and install the transfer case VAZ-2121

Disconnect the speedometer drive from the transfer case

How to remove and install the VAZ-2121 transfer case

For the VAZ-21214 car, disconnect the speed sensor connector

Disconnect the front and rear cardan shafts from the transfer case (see. Removing the cardan shaft).

How to remove and install the VAZ-2121 transfer case

Using a 19 mm open-end wrench, unscrew the nut of the bolt securing the elastic coupling to the gearbox flange, holding the bolt with a wrench of the same size.

In the same way, unscrew the nuts of the other two bolts.

How to remove and install the VAZ-2121 transfer case

Use a clamp (with a diameter of 135 mm) to compress the elastic coupling so that the bolts can be removed.

If there is no long clamp, use two shorter ones, inserting the tongue of one into the lock of the other.

How to remove and install transfer case VAZ-2121

We take out the bolts one by one: we turn the elastic coupling so that the bolt extends into the recess located on the left side of the rear cover of the gearbox.

We install an adjustable stop under the transfer case.

How to remove and install the transfer case VAZ-2121

So that after replacing the suspension bracket the transfer case takes its previous position, use a scriber (with a felt-tip pen) trace the bracket along the contour.

Substitute under the transfer case adjustable support.

How to remove and install the transfer case VAZ-2121

Using a "13" head, unscrew the two nuts securing the left bracket to the body.

How to remove and install the VAZ-2121 transfer case

Using a 17 mm open-end wrench, unscrew the nut securing the suspension bracket to the transfer case.

How to remove and install the VAZ-2121 transfer case

Having lowered the transfer case on the adjustable support, remove the suspension bracket.

How to remove and install the transfer case VAZ-2121

The right bracket is removed in the same way, except that on the VAZ-21214 car, before removing it, it is necessary to dismantle the heat shield located above the catalytic converter.

How to remove and install the VAZ-2121 transfer case

Remove the right bracket (the catalytic converter does not interfere with removal).

Install the transfer case suspension brackets in the reverse order, aligning them with the marks.

Lowering the stop and moving the transfer case back, remove it together with the intermediate shaft.

How to remove and install the VAZ-2121 transfer case

The transfer case can be removed without the intermediate shaft by disconnecting its fastening to the flange of the transfer case drive shaft

We install the transfer case in the reverse order. After installation, it must be centered.

To do this, hang up the front and rear axles of the car.

Place supports under the rear axle beam so that the rear axle takes the same position as it is when the car is on its wheels.

Turn on the transfer case, start the engine, engage direct transmission of the gearbox and increase engine speed.

If vibration of the transfer case occurs, stop the engine and loosen the nuts securing the brackets of its suspension.

By moving the transfer case, we achieve the elimination of its vibration with the engine running (this may require adjusting shims, which are installed between the brackets and the body).

In this position, finally tighten the nuts securing the brackets of the transfer case suspension.