Kia Optima: Replacement - Front Hub / Knuckle. Repair procedures - Front Axle Assembly - Driveshaft and axle - Kia Optima TF 2011-2019 Service ManualKia Optima: Replacement

1. Loosen the wheel nuts slightly.

Raise the vehicle, and make sure it is securely supported.

2. Remove wheel nuts, front wheel and tire from front hub.

Tightening torque:

88.2 ~ 107.8 N.m (9.0 ~ 11.0 kgf.m, 65.0 ~ 79.5 lb-ft)


Be careful not to damage to the wheel nuts when removing the front wheel and tire.
3. Remove the brake caliper mounting bolts, and then hold the brake caliper assembly (A) with wire.

Tightening torque:

78.4 ~ 98.0 N.m (8.0 ~ 10.0 kgf.m, 57.8 ~ 72.3 lb-ft)


4. Remove driveshaft nut (A) from the front hub when applying the brake.

Tightening torque:

215.7 ~ 254.9 N.m (22.0 ~ 26.0 kgf.m, 159.1 ~ 188.0 lb-ft)


After installation lock nut, stake the lock nut using a chisel and hammer as shown in the illustration below.

5. Remove the tie rod end ball joint (A) from the knuckle.
(1) Remove the split pin (C).
(2) Remove the castle nut (B).

Tightening torque:

34.3 ~ 44.0 N.m (3.5 ~ 4.5 kgf.m, 25.3 ~ 32.5 lb-ft)


6. Loosen the mount bolt and then remove the wheel speed sensor (A) from knuckle.

Tightening torque:

6.8 ~ 10.7 N.m (0.7 ~ 1.1 kgf.m, 5.0 ~ 7.9 lb-ft)


7. Loosen the bolt & nut and then remove the knuckle from the strut assembly (A).

Tightening torque:

156.9 ~ 176.5N.m (16.0 ~ 18.0kgf.m, 115.7 ~ 130.2lb-ft)


8. Disconnect the driveshaft (A) from the front hub assembly.

9. Loosen the bolt & nut and then remove the lower arm (A).

Tightening torque:

98.0 ~ 117.6 N.m (10.0 ~ 12.0 kgf.m, 72.3 ~ 86.7 lb-ft)


10. Install in the reverse order of removal.

Front Hub / Knuckle. Repair procedures
...

Inspection
1. Check the hub for cracks and the splines for wear. 2. Check the brake disc for scoring and damage. 3. Check the knuckle for cracks 4. ...

See also:

Inspection
1. Check the signal waveform of the CMPS and CKPS using the GDS. Specification: Refer to “Wave Form” ...

Circuit Diagram
...

Troubleshooting
Troubleshooting Symptom Probable cause Remedy Play in steering Loose yoke plug Retighten Loose steering gear ...

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