How to replace front wheel bearing / front hub bearing on ALFA ROMEO 159 1 (939) [TUTORIAL AUTODOC]
How to replace front wheel bearing / front hub bearing on ALFA ROMEO 159 1 (939) [TUTORIAL AUTODOC]


Required tools:
Wire brush
WD-40 spray
Copper grease Drive socket # E14
Drive socket # 19
Drive socket # 21
Drive socket # 36 HEX bit No.H4.
HEX bit No.H7.
Wheel impact socket #17
Ratchet wrench
Torque wrench Ball joint puller
Flat Screwdriver
Tap wrench
Crow bar Rubber mallet
Hydraulic transmission jack
Wheel chock 1. Remove the hub bearing protection cap.
Use a flat screwdriver. AUTODOC recommends:
Some cars are not equipped with wheel hub caps. 2. Loosen the wheel hub fastener.
Use a drive socket #36.
Use a tap wrench. 3. Raise the front of the car and secure on supports. 4. Unscrew the wheel bolts.
Use wheel impact socket #17. AUTODOC recommends:
To avoid injury, hold up the wheel when unscrewing the bolts. 5. Remove the dust boot caps of the brake caliper guide pins.
Use a crowbar. 6. Disconnect the brake pad wear sensor plug. Please note!
Some cars are not equipped with the brake pad wear sensor. 7. Unscrew the brake caliper fastening.
Use HEX No.H7.
Use a ratchet wrench. 8. Detach the brake caliper retaining spring.
Use a crowbar. 9. Remove the brake caliper. AUTODOC recommends:
Tie the caliper to the suspension or to the body with a wire without disconnecting from the brake hose to prevent depressurization of the brake system. Make sure that the brake caliper is not hanging on the brake hose. Don’t press the brake pedal after the brake caliper has been removed. As a result, the piston can fall out from the brake cylinder, and brake fluid leakage and depressurization of the system may occur. 10. Remove the brake pads. 11. Clean the brake caliper bracket fasteners.
Use a wire brush.
Use WD-40 spray. 12. Unscrew the caliper bracket fastening.
Use a drive socket #19. Use a tap wrench.
Use a ratchet wrench. 13. Remove the caliper bracket 14. Remove the brake disc. 15. Clean the fastener connecting the ball joint to the steering knuckle.
Use a wire brush.
Use WD-40 spray. 16. Unscrew the ball joint fastening to the steering knuckle.
Use a drive socket #21.
Use a tap wrench. 17. Disconnect the ball joint from the steering knuckle
Use a ball joint puller. 18. Support the arm.
Use a hydraulic transmission jack. 19. Disconnect the lower arm from the steering knuckle. 20. Unscrew the hub lock nut. 21. Lower the hydraulic transmission jack by 10-15 cm. AUTODOC recommends:
Lower the hydraulic transmission jack smoothly, without jerks, to avoid damaging assemblies and mechanisms. 22. Remove the drive shaft from the wheel hub. AUTODOC recommends:
Make sure that the drive shaft is not unloaded (when the car is jacked). 23. Clean the wheel hub fastener.
Use a wire brush.
Use WD-40 spray. 24. Unscrew the wheel hub axle nut.
Use a drive socket #E14.
Use a ratchet wrench.
Use a tap wrench. 25. Remove the hub and the bearing together, since they are a sealed unit.
Use a crowbar. AUTODOC recommends:
If necessary, use a rubber mallet. 26. Clean the hub bearing mounting seat.
Use a wire brush.
Use WD-40 spray. 27. Install the new wheel hub with a bearing. 28. Tighten the hub.
Use a drive socket #E14.
Use a torque wrench.
Tighten it to 80 Nm torque. 29. Clean the splines of the drive shaft CV joint.
Use a wire brush.
Use WD-40 spray. 30. Mount the drive shaft into the wheel hub. 31. Clean the ball joint mounting seat.
Use a wire brush.
Use WD-40 spray. 32. Support the arm.
Use a hydraulic transmission jack. 33. Connect the ball joint to the steering knuckle
Connect the lower arm to the steering knuckle. 34. Remove the support from under the arm. AUTODOC recommends:
Lower the hydraulic transmission jack smoothly, without jerks, to avoid damaging assemblies and mechanisms. 35. Prop up the steering knuckle.
Use a hydraulic transmission jack. 36. Tighten the ball joint fastener.
Use a drive socket #21.
Use a torque wrench.
Tighten it to 70 Nm torque. 37. Remove the support from under the steering knuckle. AUTODOC recommends:
Lower the hydraulic transmission jack smoothly, without jerks, to avoid damaging assemblies and mechanisms. 38. Treat the splines of the driveshaft CV joint.
Use copper grease. 39. Screw the wheel hub lock nut. 40. Treat the hub where it contacts the brake disk.
Use copper grease. 41. Install the brake disc. 42. Tighten the brake disc fastening.
Use HEX No.H4. Use a torque wrench.
Tighten it to 9 Nm torque. AUTODOC recommends:
You might need other tools.
This depends on the manufacturer of the part installed on your car. 43. Install the brake caliper bracket 44. Tighten the brake caliper bracket
Use a drive socket #19. Use a torque wrench.
Tighten it to 70 Nm torque. 45. Clean the brake caliper bracket from dirt and dust.
Use a wire brush.
Use a brake cleaner. AUTODOC recommends:
After applying the spray, wait a few minutes.
Make sure the disc surface is clean before installing the pads. 46. Install the brake pads. 47. Install the brake caliper and fix it.
Use HEX No.H7. Use a torque wrench.
Tighten it to 35 Nm torque. 48. Connect the brake pad wear sensor plug. 49. Install the dust boot caps of the brake caliper guide pins. 50. Install the brake caliper retaining spring.
Use a crowbar. 51. Treat the surface where the brake disc contacts the wheel rim.
Use copper grease. 52. Screw in the wheel bolts.
Use wheel impact socket #17. AUTODOC recommends:
To avoid injury, hold up the wheel when screwing in the fastening bolts. 53. Lower the car and working in a cross order, tighten the wheel bolts. Use a torque wrench.
Tighten it to 120 Nm torque. 54. Tighten the bolt connecting the drive shaft to the wheel hub.
Use a drive socket #36. Use a torque wrench.
Tighten it to 110 Nm torque.

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