OEM Scion tC Wheel Hub

Scion tC Wheel Hub Parts and Q&A

• Front Hub
  43502-21010
  Q: How to service and repair the front Wheel Hub on Scion tC?

  A:

  Maintenance and repair tasks on the front axle hub require first removing the front wheel along with disconnecting the front disc brake caliper and disc. A dial indicator measurement of the axle hub backlash should not exceed 0.05 mm (0.0020 inch); if these values are exceeded replace the bearing. The bearing needs replacement when the axle hub deviation measurement reaches 0.05 mm (0.0020 inch) during dial indicator testing. After removing the front stabilizer link assembly nut you must use a 6 mm hexagon wrench if the Ball Joint turns for successful disconnect. Remove the front axle hub nut with Special Service Tool: 09930-00010 and a hammer and your hand while holding the brake pads fastened. You should disconnect the front Speed Sensor by undoing the bolt while gently separating it from the steering knuckle but maintaining its safety. Seal the caliper from hanging through string attachment after removing the two bolts from the front disc brake cylinder assembly. The technician will remove the front disc along with the tie rod end sub-assembly using Special Service Tool: 09628-00011 and the front No. 1 suspension lower arm sub-assembly. The drive shaft connection to the axle hub requires a plastic-faced hammer for disconnection before removing the steering knuckle. The technician should remove the front lower ball joint assembly with Special Service Tool: 09628-62011 followed by the front axle hub hole snap ring extraction using snap ring pliers and completion of front axle hub sub-assembly replacement with Special Service Tool: 09520-00031. The axle hub bearing inner race extraction requires Special Service Tool: 09950-40011 and its accessories. The front disc brake dust cover requires its three bolts to be unfastened during removal. To install the part press the new axle hub bearing into the steering knuckle through the use of Special Service Tool: 09950-60020 and others and secure the front disc brake dust cover with a torque of 8.3 Nm (85 kgf-cm, 73 inch lbs.). The axle hub sub-assembly requires Special Service Tool: 09608-32010 and others to perform a press operation followed by hole snap ring installation before torquing the lower ball joint nut to 103 Nm (1,050 kgf-cm, 76 ft. lbs.) with a new cotter pin in place. The front axle assembly replacement process includes securing steering knuckle bolts to 240 Nm (2,447 kgf-cm, 177 ft. lbs.) and lower arm sub-assembly bolts to 89 Nm (908 kgf-cm, 66 ft. lbs.). Fasten together the tie rod end along with the front stabilizer link assembly then tighten them to 49 Nm (500 kgf-cm, 36 ft. lbs.) and 74 Nm (755 kgf-cm, 55 ft. lbs.) forces. Put the front disc and the disc brake cylinder assembly together by torquing to 107 Nm (1,090 kgf-cm, 79 ft. lbs.). Finish the repair by installing a fresh axle hub nut to 216 Nm and then secure it with a chisel and hammer before reinstalling the wheel that requires a torque of 103 Nm. The service technician should examine and correct the front wheel alignment also verify the ABS speed sensor signal.