Do not re-use the bearing assembly of your Mercedes W168 car.
The wheel hub bearing replacement procedure is identical for both wheels on the same axle.
All work should be done with the engine stopped.
Replacement: wheel bearing – Mercedes W168. Use the following procedure:
Step 1
Secure the wheels with chocks.
Step 2
Loosen the wheel mounting bolts. Use wheel impact socket #17.
Step 3
Raise the front of the car and secure on supports.
Step 4
Unscrew the wheel bolts.
AUTODOC recommends:
Warning! To avoid injury, hold the wheel while unscrewing the fastening bolts. Mercedes W168
Step 5
Remove the wheel.
Step 6
Remove the wheel hub nut cap. Use a crowbar. Use a hammer.
Replacement: wheel bearing – Mercedes W168. Tip:
In some cars, the wheel hub nut is not protected with a cap.
Step 7
Unstake the wheel hub retaining nut. Use a flat metal-working chisel. Use a hammer.
Step 8
Clean the wheel hub fastener. Use a wire brush. Use WD-40 spray.
Step 9
Unscrew the hub nut. Use a drive socket #30. Use a tap wrench.
Step 10
Detach the driveshaft from the steering knuckle. Use a pin punch. Use a hammer.
Step 11
Remove the fastening nut.
Step 12
Spread the brake pads. Use a crowbar.
Step 13
Clean the brake caliper bracket fasteners. Use a wire brush. Use WD-40 spray.
Step 14
Unscrew the caliper bracket fastening. Use a drive socket #18. Use a ratchet wrench. Use a tap wrench.
Step 15
Remove the brake caliper together with its bracket.
Step 16
Clean the brake disc fastener. Use a wire brush. Use WD-40 spray.
Step 17
Unscrew the brake disc fastening. Use Torx T30. Use an impact screwdriver.
Step 18
Remove the brake disc.
Step 19
Clean the ABS sensor fastener. Use a wire brush. Use WD-40 spray.
Step 20
Unscrew the ABS sensor fastener. Use HEX No.H4. Use a ratchet wrench.
Step 21
Disconnect the ABS sensor.
Step 22
Clean the fastener connecting the tie rod end to the steering knuckle. Use a wire brush. Use WD-40 spray.
Step 23
Unscrew the end fastening nut to the steering knuckle. Use a drive socket #19. Use a ratchet wrench.
Step 24
Disconnect the tie rod end from the steering knuckle. Use a ball joint puller.
Step 25
Clean the fasteners connecting the shock strut to the steering knuckle. Use a wire brush. Use WD-40 spray.
Step 26
Unscrew the fasteners connecting the suspension strut to the steering knuckle. Use a combination spanner #18. Use a drive socket #18. Use a ratchet wrench.
Step 27
Remove the fastening bolt.
Step 28
Clean the fasteners connecting the ball joint to the suspension control arm. Use a wire brush. Use WD-40 spray.
Step 29
Unscrew the fastener connecting the ball joint to the suspension control arm. Use a combination spanner #13. Use a drive socket #13. Use a ratchet wrench.
Step 30
Remove the drive shaft.
Step 31
Remove the fastening bolt.
Step 32
Remove the steering knuckle together with the hub.
Step 33
Clean the wheel hub mounting seat. Use a wire brush. Use WD-40 spray.
Step 34
Remove the wheel hub from the steering knuckle. Use a bush and bearing driver set. Use a hammer.
Step 35
Clean the wheel hub bearing retaining ring. Use a wire brush. Use WD-40 spray.
Step 36
Remove the wheel hub bearing retaining ring. Use circlip pliers.
Step 37
Press out the wheel hub bearing. Use a bush and bearing driver set.
Step 38
Clean the hub bearing mounting seat. Use a wire brush. Use WD-40 spray.
Step 39
Press the new bearing in the steering knuckle. Use a bush and bearing driver set.
Check to make sure the wheel hub bearing is positioned correctly. Avoid its misalignment. Stop pressing on the surface of the bearing immediately after it has been fitted into its mounting seat.
Step 40
Install the wheel hub bearing retaining ring. Use circlip pliers.
Step 41
Clean the hub. Use WD-40 spray.
Step 42
Install the wheel hub on the steering knuckle. Use a bush and bearing driver set.
Step 43
Clean the splines of the drive shaft CV joint. Use a wire brush. Use WD-40 spray.
Step 44
Install the steering knuckle assembled with the wheel hub. Install the drive shaft.
Step 45
Install the fastening bolt.
Step 46
Treat the shock strut mounting seat on the steering knuckle. Use a wire brush. Use WD-40 spray.
Step 47
Tighten the fastener connecting the ball joint to the steering knuckle. Use a combination spanner #13. Use a drive socket #13. Use a ratchet wrench.
Step 48
Tighten the fasteners connecting the ball joint to the control arm. Use a drive socket #13. Use a torque wrench. Tighten it to 20 Nm torque.+45°
AUTODOC recommends:
Important! Be sure to use new fasteners.
Step 49
Install the fastening bolt.
Step 50
Screw in the fasteners connecting the suspension strut to the steering knuckle. Use a combination spanner #18. Use a drive socket #18. Use a ratchet wrench.
Step 51
Clean the mounting seats of the tie rod end. Use a wire brush. Use WD-40 spray.
Step 52
Connect the tie rod end to the steering knuckle.
Step 53
Tighten the fastening nut connecting the tie rod end to the steering knuckle. Use a drive socket #19. Use a torque wrench. Tighten it to 30 Nm torque.+90°
AUTODOC recommends:
Important! Be sure to use new fasteners.
Step 54
Tighten the lower fasteners connecting the shock strut to the steering knuckle. Use a combination spanner #18. Use a drive socket #18. Use a torque wrench. Tighten it to 100 Nm torque.
Step 55
Clean the hub. Use a wire brush. Treat the contacting surface. Use copper grease.
Step 56
Install the fastening nut.
Step 57
Screw on the hub nut. Use a drive socket #30. Use a ratchet wrench.
Step 58
Install the brake disc.
Step 59
Tighten the brake disc fastening. Use Torx T30. Use a torque wrench. Tighten it to 9 Nm torque.
Step 60
Clean the brake disk surface. Use a brake cleaner.
AUTODOC recommends:
Replacement: wheel bearing – Mercedes W168. After applying the spray, wait a few minutes.
Step 61
Install the brake caliper together with its bracket.
Step 62
Tighten the brake caliper bracket. Use a drive socket #18. Use a torque wrench. Tighten it to 115 Nm torque.
Step 63
Clean the ABS sensor mounting seat. Use a wire brush. Use WD-40 spray.
Step 64
Connect the ABS sensor.
Step 65
Tighten the fastener that connects the ABS sensor to the steering knuckle. Use HEX No.H4. Use a torque wrench. Tighten it to 5 nm torque.
Step 66
Tighten the wheel hub nut. Use a drive socket #30. Use a torque wrench. Tighten it to 182 Nm torque.
Step 67
Restake the wheel hub retaining nut. Use a flat metal-working chisel. Use a hammer.
Step 68
Treat the steering knuckle fasteners. Treat the wheel hub nut. Use copper grease.
Step 69
Install the cap of the hub nut. Use a rubber mallet.
Step 70
Treat the surface where the brake disc contacts the wheel rim. Use copper grease.
Step 71
Clean the brake disk surface. Use a brake cleaner.
Replacement: wheel bearing – Mercedes W168. Tip from AUTODOC:
After applying the spray, wait a few minutes.
Step 72
Install the wheel.
AUTODOC recommends:
Warning! To avoid injury, hold the wheel while screwing in the fastening bolts on the car. Mercedes W168
Step 73
Screw in the wheel bolts. Use wheel impact socket #17.
Step 74
Lower the car and working in a cross order, tighten the wheel bolts. Use wheel impact socket #17. Use a torque wrench. Tighten it to 110 Nm torque.
Step 75
Remove the jacks and chocks.
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