Raise the car and support it safely, then remove the splash guard under the engine and the front end reinforcement. At the front differential input flange, counterhold the flex-disc mounting bolt heads, loosen and remove the nuts, and pull the bolts out. To avoid damaging the flex-disc rubber, hold the bolts stationary while loosening the nuts. Push the driveshaft backward slightly and slide out the flex-disc and centering flange, then pull the driveshaft forward to detach it from the transfer case, being prepared to catch any dripping transfer case oil. Before reinstalling, check the centering flange sealing ring and replace it if damaged, and also inspect the centering flange and flex-disc for any damage, replacing as necessary. Coat the driveshaft splines with Weicon® antiseize or equivalent grease and reinstall the driveshaft in the transfer case. Reinstall the flex-disc and centering flange, applying a thin coat of molybdenum disulfide grease when installing the centering flange. Ensure the arrows on the edge of the flex-disc point to the flange arms, then replace the flex-disc self-locking nuts and bolts, tightening the nuts while counterholding the bolts. To avoid damaging the flex-disc rubber, hold the bolts stationary while tightening the nuts.