Front Wheel Hub

Front Wheel Hub
To remove

Important: The bearing is destroyed on removal.

1. Undo the hub centre-nut when the car is standing on all four wheels.
2. Raise the car. If a jack is used, the car must be supported on axle stands.
3. Remove the wheel.





4. Remove the hub centre-nut completely.
5. Push back the brake piston using adjustable pliers. Remove the brake caliper from the spindle housing and hang it on the spring with a piece of suitable steel wire.





6. Remove the brake disc retaining bolt and remove the brake disc.
7. Remove the ABS sensor retaining bolt and lift up the sensor.





8. Remove the nut on the new outer steering link and remove the steering link using puller 89 96 696.
9. Unscrew the bolts securing the steering swivel member to the MacPherson strut and move aside the bracket for the ABS sensor cable and the brake hose.





10. Remove the bolt securing the steering swivel member ball joint to the steering swivel member.





11. Remove the bolts on the disc back-plate through the hole in the hub and remove the disc back-plate.
12. Remove the ABS sensor holder.
13. Tap out the drive shaft from the hub using a plastic hammer.





14. Remove the steering swivel member.
15. Press off the hub using tool 89 96 704 (KM-500-5).





16. Remove the circlip.





17. Press out the bearing using tool 89 96 704 (KM-500-2 and KM-500-3).

To fit





1. Lubricate the bearing surface on the steering swivel member with Molycote Rapid G and press in a new bearing using tool 89 96 704 (KM-500-4 and KM-500-5).





2. Fit the circlip with the opening pointing downwards.





3. Press on the hub using tool 89 96 704 (KM-500-3 and KM-500-5).
4. Fit the drive shaft in the hub and push it home with a new hub centre-nut.

Important: Always fit a new hub-centre nut if it has been removed because the clamping force of the lock indentations will be reduced if the old one is refitted.

Use a nut with top groove.





5. Fit the holder for the ABS sensor and disc back-plates.





6. Fit the steering swivel member ball-joint in the steering swivel member and the bolt securing the steering swivel member to the ball-joint. Fit the nut. Make sure that the bolt fits in the recess on the steering swivel member ball-joint.

Warning: Make sure that the journal on the ball-joint is protruding above the steering swivel member mounting.

7. Press in the steering swivel member in the spring strut and fit the bracket for the ABS sensor cable and brake hose in place. Press the steering swivel member inwards and tighten the bolts securing the steering swivel member to the spring strut.
Tightening torque 100 Nm +45° (75 ft. lbs. +45°).
8. Tighten the bolt securing the steering swivel member to the steering swivel member ball-joint.
Tightening torque 95 Nm (70 ft. lbs.)
9. Fit the outer steering link to the steering swivel member and tighten the nut.
Tightening torque 60 Nm (45 ft. lbs.)





10. Fit the ABS sensor.
11. Fit the brake disc in place and tighten the brake disc retaining screw.





12. Make sure that the brake piston is pressed back in the cylinder and then fit the brake caliper using locking compound 74 96 268 on the bolts to the steering swivel member.
Tightening torque 110 Nm (80 ft. lbs.)
13. Fit the wheel.
Tightening torque 110 Nm (81 ft. lbs.)
14. Lower the car and fit a new hub centre-nut when the car is standing on all four wheels.
Tightening torque 170 Nm +45° (123 ft. lbs. +45°).
15. Depress the brake pedal to press out the pistons in the brake calipers.