Question 1

How to perform an inspection of the rear Wheel Hub on Scion xB?

Accepted Answer

Vehicle inspections of the rear wheel hub require technicians to begin with removing the rear wheel followed by the rear brake drum sub-assembly. Use a dial indicator at the center of the wheel hub to check the rear axle bearing backlash which must stay below 0.05 mm (0.0020 inch) otherwise replace the rear wheel hub and bearing assembly. Use a dial indicator to measure wheel hub deviation inside the hub bolt surface which should be less than 0.07 mm (0.0028 inch). An exceeding measurement requires you to replace the rear wheel hub and bearing assembly.

Question 2

How do you service and repair the front Wheel Hub on Scion tC?

Accepted Answer

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.

Question 3

How to service and repair the front Wheel Hub on Scion xA?

Accepted Answer

Service and repair the front wheel hub by dismantling the front disc brake cylinder along with the wheel removal followed by removing the front wheel. Check the wheel hub backlash with a dial indicator until reaching 0.05 mm (0.0020 inch); replace the bearing if the measurement exceeds this limit. The bearing needs replacement when the wheel hub deviation measurement reaches the same standard maximum limit. To remove the hub nut employ Special Service Tool: 09930-00010 which elevates the retaining tabs until the stake part unlocks without damaging the drive shaft screw. First disconnect the front speed sensor and flexible hose before extracting the brake cylinder from the steering knuckle in a manner that stops the cylinder from drooping. Remove all connecting components including the front stabilizer bar together with the lower arm sub-assembly and tie rod end sub-assembly along with the front drive shaft assembly while maintaining proper care of boot and speed sensor rotor. The technicians must use Special Service Tool: 09520-00031 to remove the front wheel assembly as well as hole snap ring and wheel hub sub-assembly along with front disc brake dust cover. To replace the front wheel hub bearing users must install the inner race on the outer race while using Special Service Tool: 09527-17011 and 09950-60010 and 09950-70010 with a press which requires the steering knuckle to maintain horizontal alignment. With tools 09950-60020 and 09950-70010 installer can introduce a new hub bearing into the steering knuckle before installing the front dust cover at 8.3 Nm (85 kgf-cm, 73 inch lbs). Install a new hole snap ring and apply engine oil to screw parts when reusing bolts and nuts before tightening the front wheel assembly to 132 Nm (1,350 kgf-cm, 97 ft. lbs). The drive shaft connection must not harm the outboard joint boot or speed sensor rotor when proceeding to connect the tie rod end and lower arm sub-assembly according to specified torque values. The front stabilizer bar and front disc and brake cylinder assembly must be connected while tightening the hardware to 88 Nm (897 kgf-cm, 65 ft. lbs.). To complete the repair, install the new hub nut to 2,200 kgf-cm (216 Nm, 159 ft. lbs.), use chisel and hammer to stake it, and restore the front wheel with 1,050 kgf-cm (103 Nm, 76 ft. lbs.). Then do front wheel alignment checkups and test the ABS speed sensor signal.

OEM Scion Wheel Hub

17 Wheel Hubs found

Scion Hub & Bearing Assembly, Rear

Scion Hub Assembly

Scion Hub Assembly

Scion Hub Assembly, Front

Scion Hub & Bearing, Rear

Scion Hub Assembly, Front

Scion Front Hub

Scion Wheel Hub, Front

Scion Front Hub

Scion Front Hub

Scion Hub Assembly

Scion Hub & Bearing, Rear

Scion Hub Assembly, Rear

Scion Hub Assembly, Rear

Scion Hub & Bearing, Rear

Scion Hub & Bearing, Rear

Scion Hub Assembly, Rear

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