How to change frontwheel bearing on BMW E39-replacement guide

 This article mainly introduces  how to change frontwheel bearing on BMW E39-replacement guide

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 Replacement: wheel bearing -BMW E39. AUTODOC experts recommend:

1. Do not re-use thel bearing assembly of your BMW E39 car.

2. The wheel hub bearing replacement procedure is identical for both wheels on .

3.Warning! Shut down the engine before starting any work-BMW E39.

CARRY OUT REPLACEMENT IN THE FOLLOWING ORDER:

 

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1  Secure the wheels with chocks.

 

 

2  Loosen the wheel mounting bolts. Use wheel impact socket #17.

 

3  Raise the front of the car and secure on supports.

 

 4  Unscrew the wheel bolts.

 

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3 Replacement: wheel bearing-BMW E39. Tip:

To avoid injury, hold up the wheel when unscrewing the bolts.

 5  Remove the wheel.

 

6  Remove the dust boot caps of the brake caliper guide pins.Use a crowbar.

 

7  Unscrew the brake caliper fastening.Use HEX No.H7.Use a ratchet wrench.

 

8  Spread the brake pads.Use a crowbar.

 

9  Detach the brake caliper retaining spring.Use a crowbar.

 10| Remove the brake caliper.

 

Replacement: wheel bearing -BMW E39. AUTODOC recommends:

l 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.

l Make sure that the brake caliper is not hanging on the brake hose.

l 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.

l Check the brake caliper bracket, brake caliper guide pins and boots. Clean them.

Replace, if necessary.

 11  Remove the brakepads.

 

12|  Clean the brake caliper bracket fasteners.Use a wire brush.Use WD-40 spray. 3

13  Unscrew the caliper bracket fastening.Use a drive socket #18.Use a tap wrench.

14| Remove the caliper bracket.

 15 Clean the brake disc fasteners.Use a wirebrush.Use WD-40 spray.

 16 Unscrew the brake disc fastening.Use HEX No.H6.Use an impact screwdriver.

17 |Remove the brake disc.

Replacement: wheel bearing-BMW E39. Tip:

If necessary, use a rubber mallet.

 18 Clean the wheel hub fastener.Use a wire brush.Use WD-40 spray.

 19|Unscrew the wheel hub axle nut.Use a combination spanner #18.

 20| Remove the hub and the bearing together, since they are a sealed unit. Use a hammer.

 21Clean the hub bearing mounting seat.Use a wire brush.Use allpurpose cleaning spray.

 22 Install the new wheel hub with a bearing.

 23 |Tighten the hub.Use a drive socket #18.Use a torque wrench.Tighten it to 110 Nm torque.

 Replacement:wheel bearing -BMW E39.Tip from AUTODOC:

 he wheel bearing unit must not tilt on the axle pin.

 24Treat the hub where it contacts the brake disk.Use copper grease.

 25|Install the brake disc.

 26 Tighten the brake disc fastening.Use HEX No.H6.Use a torque wrench.Tighten it to 16 Nm torque.

 27 |Clean the brake caliper bracket from dirt and dust.Use a brake cleaner.

 AUTODOC recommends:

Replacement: wheel bearing -BMW E39. After applying the spray, wait a few minutes.

 28 | Install the brake caliper bracket.

 29|Tighten the brake caliper bracket.Use a drive socket #18.Use a torque wrench.Tighten it to 110 Nm torque.

30| Install the brake pads.

 31Install the brake caliper and fix it.Use HEX No.H7.Use a torque wrench.Tighten it to 30 Nm torque.

 32Install the dust boot caps of the brake caliper guide pins.

         |Install the brake caliper retaining spring.

 reat the fasteners of the wheel hub bearing.Use copper grease.

  35| Treat the surface where the brake disc contacts the wheel rim.Use copper grease.

 

36 Clean the brake disk surface.Use a brake cleaner.

 

  Replacement: wheel bearing -BMW E39. Tip from AUTODOC:

 After applying the spray, wait a few minutes.

 37 |Install the wheel.

 

  AUTODOC recommends:

Important! Hold the wheel while screwing in the fastening bolts. BMW E39

 38Screw in the wheel bolts.Use wheel impact socket #17.

 39Lower the car and working in a cross order, tighten the wheel bolts. Use wheel impact socket #17. Use a torque wrench. Tighten it to 120Nm torque.

 

 AUTODOC recommends:

BMW E39-Without starting the engine, press the brake pedal several timesuntil it feels firm.

 40 Remove the iarks and chocks