A double-row roller bearing is installed in the hub, which does not require adjustment and lubrication during operation.
When the hub is pressed out of the bearing, it is destroyed. Therefore, we remove it only for replacement.
To perform the work, you will need tools: wrenches for 15, for 24, a torque wrench, a hexagon wrench for 6, a hammer, a set of punches, a wrench for wheel nuts.
Replace bearings on two hubs at the same time.
Preparing the car for work.
We substitute shoes under the rear wheels.
Hang out the front of the car and remove the corresponding wheel.
Loosen the six bolts of the brake disc
We unscrew the two bolts of the front brake caliper
Remove the caliper and fix it with a wire or a technological hook on the suspension parts
Unscrew the five bolts securing the bearing housing to the steering knuckle with a hex key
The bolts securing the bearing housing to the steering knuckle are tightened with a large torque and fixed with an anaerobic thread locker.
Therefore, use only high-quality tools to turn them inside out.
If the key turns in the head of the bolt, it will be impossible to remove the bolt later. It is best to tap these bolts.
Remove the hub with the brake disc assembly
Unscrew the bolts securing the brake disc to the hub
Remove the disc from the hub
We unscrew the coupling bolt "A" and remove the clamping ring "B" (on vehicles with ABS - the wheel speed sensor drive disk)
We press the hub out of the inner ring of the bearing using a mandrel.
If the outer part of the inner ring of the bearing remains on the hub, press it with a puller
We press the hub into the new bearing with a press using a mandrel until it stops, applying force only to the inner ring of the bearing.
Do not drive the hub into the bearing - it may break.
We install the clamping ring (on a car with ABS - the wheel speed sensor drive disk) and tighten the coupling bolt to a torque of 280 - 320 Nm.
When tightening the bolt, you need to rotate the hub relative to the bearing.
Before vvorachi remove the old sealant and degrease the threaded part of the bolt and the hole in the hub. Apply anaerobic threadlocker to the threaded part of the bolt.
Install the brake disc on the hub.
Before installing the brake disc, carefully clean the mating surfaces of the hub from rust and scale
We also clean the disc from rust and scale.
Since even the smallest particle of dirt sandwiched between the mating surfaces will cause the disc to beat and vibrate when braking.
Install the hub in reverse order
Before screwing in the bolts securing the bearing housing to the steering knuckle, clean the old sealant and degrease the threaded part of the bolts and the holes in the steering knuckle.
Apply an anaerobic threadlocker to the threads of the bolts.
Tighten the bolts to 52-59 Nm.