Front Wheel Hub Bearing — Removal and Installation (Largus 1)

Note: Bearing catalog number see here.

Removal

Place the vehicle on a two-post lift, apply the parking brake and turn off the ignition.

Remove the front wheel:

• remove the front wheel speed sensor (see here);
• disconnect the front brake assembly from the steering knuckle and hang it on the front suspension spring (see here);
• remove the front brake disc (see here);

• remove the front brake disc cover (see here).

Disconnect the tie rod end from the steering knuckle arm (see here).





Remove the steering knuckle (see here).



Next, we press the hub out of the steering knuckle:



Install support plate 3 on the press table, Figure 3-1, install steering knuckle 2 on the plate, install mandrel 1 with an outer diameter of 36.5 mm on the hub and press out hub 5 from the steering knuckle (hydraulic press type KS-124 (Kochubeyevsky Plant "Avtospetsoborudovaniye"), mandrel with an outer diameter of 36.5 mm for pressing out the hub - self-made, support plate - self-made).





... in the absence of a press, resting the steering knuckle on the jaws of a vice (or on wooden blocks), we strike the end of the hub with a hammer through a mandrel or head of a suitable size and press out the hub.



In this case, the inner bearing ring, located closer to the hub flange, remains on the hub. Using a screwdriver, we pry off the protective washer covering the bearing seal…



…and remove the washer.





We clamp the hub flange in a vice and insert a chisel between the ends of the inner bearing ring and the hub flange, and strike it with a hammer, thereby moving the inner bearing ring along the hub.



Then, using a puller, you can completely remove the inner bearing ring from the hub.



Remove the bearing retaining ring from the steering knuckle (internal retaining ring puller type 65 44 60 21 size J 21 f. "Stahlwille").





Press the inner bearing race off the hub (set of pullers type 71 03 00 00 and 71 04 00 00 f. "Stahlwille").



Install stop 4 on the press table, Figure 3-2, install steering knuckle 2 on the stop, install mandrel 1 with an outside diameter of 65 mm on the inner race 3 of the bearing and press out the outer bearing ring from the steering knuckle (hydraulic press type KS-124 (Kochubeyevsky Plant "Avtospetsoborudovaniye"), mandrel with an outside diameter of 65 mm for pressing out the outer bearing ring - self-made, stop - self-made).



OR...



... if you don't have a puller, knock out the bearing using a drift of the appropriate diameter (for example, a socket head), since the pressed out bearing is not suitable for reuse.

Installation

Caution: Before assembly, clean the mating surfaces of the steering knuckle, front wheel hub and bearing.

Attention. Before assembly, check the seating surfaces of the steering knuckle and front wheel hub, replace defective parts.

Attention: When pressing the bearing into the steering knuckle, apply the pressing force to the outer race of the bearing. Pressing by acting on the inner bearing race is not permitted.

On vehicles with ABS, before installing the bearing, insert the wheel speed sensor mounting ring into the steering knuckle hole (with the paws that center the ring inside the knuckle).



We orient the ring in the hole of the knuckle so that the speed sensor holder on the ring 1 is located in the groove of the knuckle 2 (for clarity, shown on an assembled hub unit).



Install stop 4 on the press table, Figure 3-3, install steering knuckle 3 on the stop and press in the bearing, installing mandrel 1 with an outside diameter of 70 mm for pressing in on the outer race 2 of the bearing (hydraulic press type KS-124 (Kochubeyevsky Plant "Avtospetsoborudovaniye"), mandrel with an outside diameter of 65 mm for pressing in the bearing - self-made, stop - self-made).



Or, if you don't have a press, you can use a cup puller. To do this:

Having installed the puller screw with the support washer, we insert a new bearing into the hole in the knuckle.



The bearing should be installed so that its protective washer is dark in color (made of magnetic material) was facing the mounting ring of the wheel speed sensor.

We press the bearing in by applying force through the cup of the puller 1 to the end of the outer ring of the bearing 2, while the washer of the puller 3 should rest on the steering knuckle.



After pressing the bearing, install a retaining ring into the groove of the knuckle (retaining ring puller type 65 44 60 21 size J 21 f. "Stahlwille").

Next we press the hub into the bearing:



Place the stop 5 on the press table, Figure 3-4, place the hub 4 of the front wheel on the stop and press the knuckle 1 with the bearing assembly onto the hub, installing the mandrel 2 with an outer diameter of 50 mm for pressing on the inner race 3 of the bearing (hydraulic press type KS-124 (Kochubeyevsky Plant "Avtospetsoborudovaniye"), the mandrel with an outer diameter of 50 mm for pressing - self-made, the stop - self-made.

Or, if you don't have a press, use the same cup puller:



When pressing the hub, the puller cup should rest on the end of the inner bearing ring.

Install the steering knuckle on the vehicle.

Connect the tie rod end to the steering knuckle arm

• install front brake disc cover;
• install front brake disc;
• install front brake assembly;
• install the front wheel speed sensor.

Install the front wheel.

Press the brake pedal 2-3 times to set the wheel brake cylinder pistons to the working position.

Check and, if necessary, adjust the front wheel alignment angles.