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Home >> Kia >> 2016 >> Optima SX Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 39 (Front Suspension System (HEV)) >> Front Cross Member >> Repair Procedures >> Replacement

Repair Procedures: Replacement

WARNING: This page is about a different variant/trim than selected.
  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: Removing Front Wheel & Tire
    G11816373Courtesy of KIA MOTORS AMERICA, INC.
    CAUTION: Be careful not to damage to the hub bolts when removing the front wheel & tire.
  2. 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 2: Disconnecting Universal Joint Assembly From Pinion Of Steering Gear Box
    G11816374Courtesy of KIA MOTORS AMERICA, INC.
    CAUTION: Lock the steering wheel in the straight ahead position to prevent the damage of the clock spring inner cable when you handle the steering wheel.
  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: Disconnecting Tie-Rod End From Front Knuckle
    G11816375Courtesy 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 & Nut
    G11816376Courtesy 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: Removing Front Lower Arm From Front Knuckle Using SST (0K545-A9100)
      G11816377Courtesy 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: Inserting Sub Body Between Front Knuckle And Sub Body Bolt
      G11816378Courtesy of KIA MOTORS AMERICA, INC.
    4. Install the safe wire (A).
      Fig 7: Installing Safe Wire
      G11816379Courtesy 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: Installing Main Body Between Front Strut And Lower Arm
      G11816380Courtesy 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 Fixing Clamp Into Main Body
      G11816381Courtesy 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: Rotating Handle Clockwise Until Clamp Is Fixed On A Lower Arm
      G11816382Courtesy 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: Removing Lower Arm From Front Knuckle
      G11816383Courtesy of KIA MOTORS AMERICA, INC.
  6. Disconnect the stabilizer link (B) with 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 12: Disconnecting Stabilizer Link With Front Strut Assembly
    G11816384Courtesy of KIA MOTORS AMERICA, INC.
  7. Remove the undercover (A).
    Fig 13: Removing Undercover
    G11816385Courtesy of KIA MOTORS AMERICA, INC.
  8. Loosen the bolt (A) & nut (B) and then remove the roll rod stopper (A).

    Tightening torque: 

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

    Fig 14: Removing Roll Rod Stopper, Bolt & Nut
    G11816386Courtesy of KIA MOTORS AMERICA, INC.
  9. Disconnect the muffler rubber hanger (A).
    Fig 15: Disconnecting Muffler Rubber Hanger
    G11816387Courtesy 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: Removing Sub Frame Mounting Bolts & Nut (1 Of 5)
    G11816388Courtesy of KIA MOTORS AMERICA, INC.
    Fig 17: Removing Sub Frame Mounting Bolts & Nut (2 Of 5)
    G11816389Courtesy of KIA MOTORS AMERICA, INC.
    Fig 18: Removing Sub Frame Mounting Bolts & Nut (3 Of 5)
    G11816390Courtesy of KIA MOTORS AMERICA, INC.
    Fig 19: Removing Sub Frame Mounting Bolts & Nut (4 Of 5)
    G11816391Courtesy of KIA MOTORS AMERICA, INC.
    Fig 20: Removing Sub Frame Mounting Bolts & Nut (5 Of 5)
    G11816392Courtesy of KIA MOTORS AMERICA, INC.
  11. Remove the front lower arm.

    (Refer to FRONT LOWER ARM .)

  12. Remove the front stabilizer.

    (Refer to Front Stabilizer Bar .)

  13. Remove the steering gearbox.

    (Refer to - "STEERING GEARBOX ")

  14. Installation is the reverse of removal.