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Home >> Kia >> 2018 >> Optima Plug-In Hybrid EX >> Repair and Diagnosis >> Suspension >> Front Suspension >> Front Suspension System (PHEV) >> Sub Frame >> Repair Procedures >> Removal

Repair Procedures: Removal

  1. Turn ignition OFF and disconnect the negative (-) battery cable.
  2. Remove the universal joint bolt (A).

    Tightening torque: 

    29.4 - 34.3 N.m (3.0 - 3.5 kgf.m, 21.7 - 25.3 lb.ft)

    G12349763Courtesy of KIA MOTORS AMERICA, INC.
    CAUTION:
    • Keep the neutral-range to prevent the damage the clock spring inner cable when you handle the steering wheel.
    • Do not use the bolt again.
  3. Remove the wheel and tire.

    Tightening torque: 

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

    G12349764Courtesy of KIA MOTORS AMERICA, INC.
    CAUTION: Be careful not to damage the hub bolts when removing the front wheel & tire.
  4. Remove the under cover.

    (Refer to Engine Mechanical System - "ENGINE ROOM UNDER COVER ")

  5. Remove the tie rod end ball joint (C) from the knuckle by using the SST (09568-34000).
    1. Remove the split pin (A).
    2. Remove the castle nut (B).
    3. Use the SST (09568-34000).

      Tightening torque: 

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

    G12349765Courtesy of KIA MOTORS AMERICA, INC.
    G12349766Courtesy of KIA MOTORS AMERICA, INC.
    CAUTION:
    • When using SST, be careful not to damage the dust cover of lower arm ball joint.
    • Keep SST tied to the car as there is risk of injury when the SST is dropped while removing the lower arm ball joint.
    • Be sure to use SST when removing the lower arm ball joint as general tool such as lever may damage the peripheral parts.
  6. Loosen the pin (A), and then remove the lower arm nut (B).

    Tightening torque: 

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

    G12349767Courtesy of KIA MOTORS AMERICA, INC.
  7. Remove the stabilizer link nut (A).

    Tightening torque: 

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

    G12349768Courtesy of KIA MOTORS AMERICA, INC.
  8. Remove the muffler hanger.
    G12349769Courtesy of KIA MOTORS AMERICA, INC.
  9. Loosen the bolts & nuts and then remove the sub frame (D).

    Tightening torque: 

    Bolt:

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

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

    Nut:

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

    G12349770Courtesy of KIA MOTORS AMERICA, INC.
  10. Loosen the bolts (A) and then remove the heat protector.

    Tightening torque: 

    7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb.ft)

    G12349771Courtesy of KIA MOTORS AMERICA, INC.
  11. Loosen the gear box mounting bolts (A) and then remove the gear box.

    Tightening torque: 

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

    G12349772Courtesy of KIA MOTORS AMERICA, INC.
  12. Loosen the stabilizer bar mounting bolts (A) and then remove the stabilizer bar.

    Tightening torque: 

    49.0 - 63.7 N.m (5.0 - 6.5 kgf.m, 36.2 - 47.0 lb.ft)

    G12349773Courtesy of KIA MOTORS AMERICA, INC.
  13. Install in the reverse order of removal.
  14. Check the wheel alignment.

    (Refer to Suspension System - "ALIGNMENT ")