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Home >> Kia >> 2014 >> Optima EX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 14 (Front Axle Assembly - Optima HEV) >> Front Hub/Knuckle >> Repair Procedures >> Replacement

Repair Procedures: Replacement

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  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)

    Fig 1: Wheel Nuts, Front Wheel & Tire
    G08308161Courtesy of KIA MOTORS AMERICA, INC.
    CAUTION: 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)

    Fig 2: Front Brake Caliper & Bolts
    G08308162Courtesy of KIA MOTORS AMERICA, INC.
  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)

    Fig 3: Driveshaft Nut
    G08308163Courtesy of KIA MOTORS AMERICA, INC.
  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)

      Fig 4: Tie Rod End Ball Joint, Split Pin & Castle Nut
      G08308164Courtesy of KIA MOTORS AMERICA, INC.
  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)

    Fig 5: Wheel Speed Sensor & Bolt
    G08308165Courtesy of KIA MOTORS AMERICA, INC.
  7. Loosen the bolt & nut and then remove the knuckle from the strut assembly (A).

    Tightening torque: 

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

    Fig 6: Strut Assembly & Bolt And Nut
    G08308166Courtesy of KIA MOTORS AMERICA, INC.
  8. Disconnect the driveshaft (A) from the front hub assembly.
    Fig 7: Driveshaft
    G08308167Courtesy of KIA MOTORS AMERICA, INC.
  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)

    Fig 8: Lower Arm & Bolt And Nut
    G08308168Courtesy of KIA MOTORS AMERICA, INC.
  10. Install in the reverse order of removal.