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Home >> Kia >> 2016 >> Optima SX Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Electric Power Steering System (HEV)) >> Steering Gear Box >> Repair Procedures >> Replacement

Repair Procedures: Replacement

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  1. Remove the front wheel & tire.

    Tightening torque: 

    88.3 ~ 107.9N.m (9.0 ~ 11.0kgf.m, 65.1 ~ 79.6lb-ft)

    Fig 1: Front Wheel And Tire
    G11816522Courtesy of KIA MOTORS AMERICA, INC.
    CAUTION: Be careful not to damage to the hub bolts when removing the front wheel & tire.
  2. Disconnect the stabilizer link (B) from the front strut assembly (A) after loosening the nut.

    Tightening torque: 

    98.1 ~ 117.7N.m (10.0 ~ 12.0kgf.m, 72.3 ~ 86.8lb-ft)

    Fig 2: Removing Stabilizer Link Nut
    G11816523Courtesy of KIA MOTORS AMERICA, INC.
  3. Remove the split pin and castle nut and then disconnect the tie-rod end (A) from the front knuckle.

    Tightening torque: 

    34.3 ~ 44.1N.m(3.5 ~ 4.5kgf.m, 25.7 ~ 32.5lb-ft)

    Fig 3: Removing Split Pin And Castle Nut
    G11816524Courtesy of KIA MOTORS AMERICA, INC.
  4. Loosen the bolt & nut and then remove the lower arm (A).

    Tightening torque: 

    98.1 ~ 117.7N.m (10.0 ~ 12.0kgf.m, 72.3 ~ 86.8lb-ft)

    Fig 4: Removing Lower Arm Bolt And Nut
    G11816525Courtesy of KIA MOTORS AMERICA, INC.
  5. Remove the front lower arm from the front knuckle using the SST (0K545-A9100).
    1. After removing bolts from the front knuckle, install and tighten the sub body bolt (A).
      Fig 5: Installing And Tightening Sub Body Bolt
      G11816526Courtesy of KIA MOTORS AMERICA, INC.
    2. Input the sub body (A) between the front knuckle and the sub body bolt.
    3. Tighten bolt (B) of the sub body bolt to broaden the gap of the front knuckle.
      Fig 6: Locating Sub Body And Bolt
      G11816527Courtesy of KIA MOTORS AMERICA, INC.
    4. Install the safe wire (A).
      Fig 7: Locating Safe Wire
      G11816528Courtesy of KIA MOTORS AMERICA, INC.
      NOTE: Install a safe wire on the front strut to prevent dropping the SST and hurting technicians.
    5. Install the main body, between the front strut and the lower arm.
      Fig 8: Locating Main Body
      G11816529Courtesy of KIA MOTORS AMERICA, INC.
    6. To avoid the main body coming off, install a fixing clamp (A) beside the main body.
      Fig 9: Installing Main Body Fixing Clamp
      G11816530Courtesy of KIA MOTORS AMERICA, INC.
    7. After installing a fixing clamp, rotate the handle (B) clock wise till the clamp is fixed on a lower arm.
      Fig 10: Fixing Clamp On Lower Arm
      G11816531Courtesy of KIA MOTORS AMERICA, INC.
    8. Tighten a main body bolt (A) off slowly and remove the lower arm from the front knuckle.
    Fig 11: Tightening Main Body Bolt
    G11816532Courtesy of KIA MOTORS AMERICA, INC.
  6. Loosen the bolt (A) and then disconnect the universal joint assembly from the pinion of the steering gear box.

    Tightening torque: 

    29.4 ~ 34.3N.m (3.0 ~ 3.5kgf.m, 21.7 ~ 25.7lb-ft)

    Fig 12: Locating Universal Joint Assembly Bolt
    G11816533Courtesy of KIA MOTORS AMERICA, INC.
    CAUTION:
    • Keep in the neutral-range to prevent damage of the clock spring inner cable when you handle the steering wheel.
    • Do not use the bolt again.
  7. Remove the under cover (A).
    Fig 13: Locating Under Cover
    G11816534Courtesy of KIA MOTORS AMERICA, INC.
  8. Loosen the bolt (A) & nut (B) and then remove the roll rod stopper.

    Tightening torque: 

    107.9 ~ 127.5N.m (11.0 ~ 13.0kgf.m, 79.6 ~ 94.0lb-ft)

    Fig 14: Loosening Roll Rod Stopper Bolt And Nut
    G11816535Courtesy of KIA MOTORS AMERICA, INC.
  9. Disconnect the muffler rubber hanger (A).
    Fig 15: Locating Muffler Rubber Hanger
    G11816536Courtesy of KIA MOTORS AMERICA, INC.
  10. Loosen the bolts & nuts and then remove the sub frame (A).

    Tightening torque 

    Sub frame mounting bolts & nuts: 

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

    Sub frame stay bolts & nuts: 

    44.1 ~ 58.8N.m (4.5 ~ 6.0kgf.m, 32.5 ~ 43.4lb-ft)

    Fig 16: Locating Sub Frame (1 Of 5)
    G11816537Courtesy of KIA MOTORS AMERICA, INC.
    Fig 17: Loosening Sub Frame Bolts And Nuts (2 Of 5)
    G11816538Courtesy of KIA MOTORS AMERICA, INC.
    Fig 18: Loosening Sub Frame Bolts And Nuts (3 Of 5)
    G11816539Courtesy of KIA MOTORS AMERICA, INC.
    Fig 19: Loosening Sub Frame Bolts And Nuts (4 Of 5)
    G11816540Courtesy of KIA MOTORS AMERICA, INC.
    Fig 20: Loosening Sub Frame Bolts And Nuts (5 Of 5)
    G11816541Courtesy of KIA MOTORS AMERICA, INC.
  11. Remove the stabilizer bar.
  12. Loosen the bolt and then remove the steering gear box (A).

    Tightening torque: 

    88.3 ~ 107.9N.m (9.0 ~ 11.0kgf.m, 65.1 ~ 79.6lb-ft)

    Fig 21: Loosening Steering Gear Box Bolts (1 Of 2)
    G11816542Courtesy of KIA MOTORS AMERICA, INC.
    Fig 22: Loosening Steering Gear Box Bolts (2 Of 2)
    G11816543Courtesy of KIA MOTORS AMERICA, INC.
  13. Installation is the reverse of the removal.