Genuine Volvo S70 Wheel Bearing

Volvo S70 Wheel Bearing Parts and Q&A

• Hub Assembly
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  Q: How to remove and refit a hub bearing assembly involving the Steering Knuckle and front Wheel Bearing on Volvo S70?

  A:

  The hub bearing is a sealed, pre-adjusted and pre-lubricated, double-row ball type that has been designed to last the entire service life of the car without maintenance. It is contained within the hub carrier which is bolted to the steering knuckle and these components are serviced as a complete body without possibility of individual dismantling. To disassemble the hub assembly, set the handbrake and chock the rear wheels, preferably loosening the driveshaft nut while the car is on its wheels to prevent it from slipping. For steel wheels, you need to remove the wheel trim to reach the driveshaft nut while for alloy wheels, it is safer if you remove the wheel and put on a temporary spare. With an assistant to press the brake pedal loosen the driveshaft retaining nut using a socket and long extension bar making sure that the tools are a quality. Once you have loosened the bolts on the wheel's front, raise the car and secure it on axle stands before removing the front roadwheel. Inspect the condition of the driveshaft nut threads before you remove it and consider replacing it if you have removed it several times. Remove the ABS wheel sensor and its connection, then loosen the bolts that hold the brake caliper bracket to the steering knuckle, holding the brake caliper assembly in place by coil spring suspension. If the brake disc is not already marked, mark the position of the brake disc in relation to the hub, remove the spigot pin and lift off the disc. Free the driveshaft CV joint from the hub flange (tapping the CV joint inward) undone the nut and clamp bolt holding the suspension control arm balljoint in place on the steering Knuckle - pushing down on the suspension arm if necessary. Swivel the suspension strut and steering knuckle assembly away from the hull to remove the CV joint of the driveshaft unit from the hub flange, and remove the four bolts to remove the hub carrier assembly. For refitting, remove all surfaces of metal adhesive, rust, oil and dirt, then find the hub carrier assembly on the steering knuckle and tighten the new bolts to torque settings successively. As a minimum, ensure the hub and brake disc mating faces are clean, are in alignment at the orientation marks when refitting the disc and apply a bead of metal adhesive to the splines of the outer CV joint before engaging this into the hub flange. Lubricate the threads of the CV joint and driveshaft retaining nut with engine oil, using a new nut if necessary. Refit the same wheel as you used to loosen the drive shaft nut, lower the car and make sure the ABS sensor is clean before refitting. Finally, tighten all nuts and bolts to the specified torque, and fit the alloy wheel (if applicable) and tighten the roadwheel bolts.