Chock the rear wheels, apply the parking brake, loosen the front wheel nuts, jack up the front of the car, and support it on firmly based axle stands before removing the road wheel. Detach the disc brake caliper and carefully remove the grease cap from the hub. Withdraw the cotter pin and lift away the nut lock, adjusting nut, and plain washers from the spindle, then lift away the outer bearing cone and roller assembly. Remove the disc from the wheel spindle and use a screwdriver or tapered drift to remove the grease seal, which must be replaced. Take out the inner bearing cone and roller assembly from the hub, clean grease from the inner and outer bearing cups, and inspect for signs of wear, scratching, or pitting, as damage necessitates replacement of the bearings using a tapered drift. Clean the inner and outer bearing cone and roller assemblies, wiping them dry with a clean lint-free rag, and carefully inspect for wear or damage, ensuring that new cone and roller assemblies are not used with old cups. Clean the spindle and lubricate it with fresh grease. If the inner or outer bearing cups were removed, fit new cups using a suitable diameter drift, ensuring they are correctly seated. Pack the inside of the hub with fresh grease until it is flush with the inside diameter of both bearing cups, then clean off old grease from each bearing cone and roller assembly, packing them with fresh grease while working it well between the rollers. Place the inner bearing cone and roller assembly in the inner cup, apply a smear of grease to the lip of the grease seal, and replace it using a suitable diameter drift, ensuring it is correctly seated. Reinstall the disc onto the wheel spindle, keeping the hub in a central position to avoid damaging the grease retainer, then replace the outer bearing cone and roller assembly, followed by the plain washer and adjustment nut. Adjust the wheel bearing, fit a new cotter pin, and bend the ends around the castellations of the nut lock to prevent interference with the radio static collector in the grease cap if equipped. Finally, replace the grease cap by tapping it into position with a soft-faced hammer, reinstall the caliper, secure the wheel, lower the car to the ground, and before driving, pump the brake pedal to restore normal brake pedal travel.