Q: How to remove and insatall the driveaxle on Hyundai Sonata?
A: To remove the axle shaft, start by taking off the wheel cover or hubcap, then remove the cotter pin and loosen the axle shaft/hub nut with a long breaker bar, followed by loosening the wheel lug nuts. Raise the vehicle securely on jackstands and remove the wheel. Drain the transaxle lubricant or place rags under the transaxle end of the axle shaft. Disconnect the wheel speed sensor and brake hose assembly from their brackets. Disconnect the outer tie-rod end from the steering knuckle, then remove the two bolts from the lower balljoint without separating the pivot joint. Swing the knuckle/hub assembly outward until the axle shaft is free from the hub, tapping the end of the axle shaft with a plastic hammer if necessary. Carefully pry the inner end of the axle shaft from the transaxle or intermediate shaft using a large screwdriver or prybar, supporting the CV joints as you remove the axle shaft. For the right inner shaft on 3.3L models, disconnect the right stabilizer bar link, unbolt the lower section of the fork from the lower control arm, remove the upper fork bolt, and take off the fork. Remove the inner shaft cover and bolts from the inner shaft bracket, then pull the inner shaft assembly from the transaxle. For installation, if the inner driveshaft was removed, install it and replace the old spring clip on the inner end of the axle shaft with a new one, lubricating the differential or intermediate shaft seal with multi-purpose grease. Raise the axle shaft into position, ensuring the splined end of the inner CV joint or intermediate shaft is inserted into the differential side gear with the spring clip locked in its groove, making sure the gap in the spring clip faces down. Apply a light coat of grease to the outer CV joint splines, pull out on the strut/steering knuckle assembly, and install the stub axle into the hub. Reconnect the balljoint to the lower control arm and tighten the nuts, then install the axle shaft/hub nut with the convex side of the washer facing out, tightening it securely but not to the actual torque specification until the vehicle is lowered. Ensure the axle shaft is seated securely in the transaxle by grasping the inner CV joint housing and pulling out. Install the wheel and lug nuts, lower the vehicle, and tighten the lug nuts and axle shaft/hub nut to the specified torque, then install a new cotter pin. Finally, refill the transaxle with the recommended type and amount of lubricant.