Kia_Sephia_Rio_Spectra_Optima_1998-2006

Wheel Bearings

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Adjustment



The wheel bearings on these vehicles are not adjustable. To check if the bearing requires service, remove the wheel and tire assembly, brake caliper and disc brake rotor. Install a dial indicator with the indicator foot resting on the wheel hub. Try to move the hub in and out. If there is more than 0.002 in. (0.05mm) bearing play, check the wheel hub nut torque or replace the hub and bearing assembly.

Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove the front wheels.
  4.  
  5. Remove the center locknut. Discard the old locknut.
  6.  
  7. Remove the caliper assembly from the knuckle. Do not disconnect the brake lines. Support the caliper with a piece of wire. Do not allow the caliper to hang by the hose at any time. Remove the brake disc.
  8.  
  9. Remove the Anti-lock Brake System (ABS) speed sensor, if equipped.
  10.  
  11. Remove the tie rod end cotter pin and nut.
  12.  
  13. Separate the tie rod end from the knuckle assembly.
  14.  
  15. Remove the outer lower arm-to-ball joint mounting bolt and nut.
  16.  
  17. Remove the lower arm from the knuckle assembly.
  18.  
  19. Remove the knuckle assembly free of the halfshaft, using a plastic mallet.
  20.  
  21. Remove the knuckle assembly.
  22.  
  23. Clamp the knuckle in a vise with protected jaws.
  24.  
  25. Remove the inner oil seal from the knuckle, if equipped.
  26.  
  27. Remove the front wheel hub from the knuckle assembly, using an appropriate hub-puller.
  28.  
  29. Remove the bearing inner race from the front wheel hub.
    NOTE
    If the bearing inner race still remains on the hub assembly, grind a section of the bearing inner race until about 0.02 in. (0.50mm) remains. Remove with a chisel.

  30.  
  31. Remove the retaining ring from within the knuckle.
  32.  
  33. Remove the front wheel bearing from the knuckle, using a wheel bearing removal tool to press it out.
  34.  
  35. Clean and inspect all parts but do not wash or clean the wheel bearing.

    Click image to see an enlarged view

    Fig. Exploded view of the front steering knuckle and related components-Sephia and Spectra 1.8L models



    Click image to see an enlarged view

    Fig. Exploded view of the front hub and bearing assembly-Sephia and Spectra 1.8L model



    Click image to see an enlarged view

    Fig. Exploded view of the front hub and bearing assembly-2002-2005 Rio



    Click image to see an enlarged view

    Fig. Exploded view of the front hub and bearing assembly-2006 Rio and Spectra 2.0L

  36.  

To install:

  1. Install the new wheel bearing into the knuckle assembly, using the press tools.
  2.  
  3. Install the wheel bearing retaining ring.
  4.  
  5. Install the front wheel hub, using a press and the correct bearing driver.
  6.  
  7. Install a new oil seal using the appropriate seal driver and a hammer. Tap the oil seal in evenly until the special tool contacts the steering knuckle. Coat the lip of the oil seal with grease.
  8.  
  9. Install the bearing/hub and knuckle assembly in place. Loosely tighten the knuckle to shock absorber bolt.
  10.  
  11. Install the lower arm ball joint to the knuckle. Tighten the nut to 32-40 ft. lbs. (43-54 Nm) for Sephia and Spectra, to 40-50 ft. lbs. (54-68 Nm) for Rio or to 74-88 ft. lbs. (100-120 Nm) for Optima.
  12.  
  13. Install the halfshaft to the knuckle assembly.
  14.  
  15. Install the wheel speed sensor, if equipped with ABS and tighten the bolts to 12-17 ft. lbs. (16-23 Nm)
  16.  
  17. Install the tie rod end to the knuckle and tighten the nut to 22-32 ft. lbs. (29-41 Nm) for Rio, Sephia and Spectra or to 18-25 ft. lbs. (24-34 Nm) for Optima.
  18.  
  19. Install a new cotter pin.
  20.  
  21. Install a new wheel hub locknut. Tighten the nut to 155-200 ft. lbs. (214-279 Nm) for 1.8L Sephia and Spectra, to 116-174 ft. lbs. (157-235 Nm) for 2002-2005 Rio, 144-188 (200-260 Nm) for 2006 Rio and 2.0L Spectra or to 148-192 ft. lbs. (200-260 Nm) for Optima.
  22.  
  23. Check the end-play of the wheel bearing by installing a dial indicator against the wheel hub and tire to move the brake disc back and forth. There should be no more than 0.002 in. (0.05mm) of free-play present.
  24.  
  25. Stake the locknut into place by bending it into the groove.
  26.  
  27. Install the brake caliper(s) and tighten the bolts to 33-50 ft. lbs. (45-67 Nm)
  28.  
  29. Install the front wheels and lower the vehicle.
  30.  
  31. With the vehicle lowered check all of the bolts and retighten as necessary.
  32.  
  33. Inspect the front end alignment and adjust as is necessary.
  34.  

 
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