Important!

This replacement procedure can be used for:
BMW 8 (E31) 850 CSi, BMW 8 (E31) 840Ci, BMW 8 (E31) 840i, BMW 8 (E31) 850 Ci, BMW 8 (E31) 850i, Ci … View more

The steps may slightly vary depending on the car design.

This video shows the replacement procedure of a similar car part on another vehicle

All the parts you need to replace – Wheel Bearing for 8 (E31) and other BMW models

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Replacement: wheel bearing – BMW 8 (E31). Tools you need:

                      Wire brush
                    
                      WD-40 spray
                    
                      All-purpose cleaning spray
                    
                      Brake cleaner 
                    
                      Copper grease 
                    
                      Torque wrench
                    
                      Drive socket # 16
                    
                      Drive socket # 46
                    
                      HEX bit No.H6
                    
                      Wheel impact socket #17
                    
                      Tap wrench
                    
                      Hammer
                    
                      Impact screwdriver
                    
                      Universal puller
                    
                      3-Arm Gear Puller
                    
                      Flat chisel
                    
                      Crow bar
                    
                      Wheel chock

Buy tools

AUTODOC recommends:

Do not re-use the bearing assembly of your BMW 8 (E31) 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 – BMW 8 (E31). Take the following steps:

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. BMW 8 (E31)
Step 5

Remove the wheel.
Step 6

Spread the brake pads. Use a crowbar.
Step 7

Clean the brake caliper bracket fasteners. Use a wire brush. Use WD-40 spray.
Step 8

Unscrew the caliper bracket fastening. Use a drive socket #16. Use a tap wrench.
Step 9

Remove the brake caliper together with its bracket.

Replacement: wheel bearing – BMW 8 (E31). Tip from AUTODOC experts:
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.
Step 10

Clean the brake disc fastener. Use a wire brush. Use WD-40 spray.
Step 11

Unscrew the brake disc fastening. Use HEX No.H6. Use an impact screwdriver.
Step 12

Remove the brake disc.
Step 13

Remove the wheel hub nut cap. Use a crowbar. Use a hammer.
Step 14

Unstake the wheel hub retaining nut. Use a flat metal-working chisel. Use a hammer.
Step 15

Unscrew the hub nut. Use a drive socket #46. Use a tap wrench.
Step 16

Remove the fastening nut.
Step 17

Remove the wheel hub together with the bearing. Use 3-Arm Gear Puller.
Step 18

Pull the bearing inner race out of the wheel hub. Use a universal puller.
Step 19

Clean the hub bearing mounting seat. Use a wire brush. Use all-purpose cleaning spray.
Step 20

Install the new wheel hub with a bearing. Use a drive socket #46. Use a hammer.
Step 21

Install the fastening nut.
Step 22

Tighten the wheel hub nut. Use a drive socket #46. Use a torque wrench. Tighten it to 290 Nm torque.
Step 23

Restake the wheel hub retaining nut. Use a flat metal-working chisel. Use a hammer.
Step 24

Treat the wheel hub nut. Use copper grease.
Step 25

Install the cap of the hub nut. Use a drive socket #46. Use a hammer.
Step 26

Install the brake disc.
Step 27

Tighten the brake disc fastening. Use HEX No.H6. Use a torque wrench. Tighten it to 9 Nm torque.
Step 28

Install the brake caliper together with its bracket.
Step 29

Tighten the brake caliper bracket. Use a drive socket #16. Use a torque wrench. Tighten it to 110 Nm torque.
Step 30

Clean the wheel rim mounting seat. Use a wire brush.
Step 31

Treat the surface where the brake disc contacts the wheel rim. Use copper grease.
Step 32

Clean the brake disk surface. Use a brake cleaner.

AUTODOC recommends:
Replacement: wheel bearing – BMW 8 (E31). After applying the spray, wait a few minutes.
Step 33

Install the wheel.

AUTODOC recommends:
Warning! To avoid injury, hold the wheel while screwing in the fastening bolts on the car. BMW 8 (E31)
Step 34

Screw in the wheel bolts. Use wheel impact socket #17.
Step 35

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 120 Nm torque.
Step 36

Remove the jacks and chocks.

Replacement: wheel bearing – BMW 8 (E31). AUTODOC experts recommend:
Without starting the engine, press the brake pedal several times until you feel significant resistance.

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