To remove the crankshaft pulley, first disconnect the cable from the negative battery terminal. Next, remove the drivebell and loosen the right front wheel lug nuts. Raise the vehicle and support it securely on jackstands before removing the wheel. Carefully pry out the plastic fasteners to remove the splash shield. Use a breaker bar and socket to remove the crankshaft pulley center bolt, employing a large pin spanner to prevent the pulley from rotating while loosening the bolt; discard the old bolt and obtain a new one for installation. Lock the pulley in position with a strap wrench or large pin spanner, ensuring to wrap an old drivebelt around the pulley for protection if using a strap wrench. Slide the pulley off the crankshaft; if stuck, use a puller that bolts to the three threaded holes in the pulley hub, along with a spacer like a deep socket to avoid damaging the crankshaft. Remove the crankshaft front oil seal with a seal puller or large screwdriver, taking care not to damage the crankshaft or seal bore. Clean the seal bore and check for nicks or gouges, examining the hub area for abnormal wear or scoring; repair sleeves may be available for many popular engines. For installation, coat the lip of the new seal with clean engine oil and drive it into the bore with a seal driver or a slightly smaller socket, ensuring the open side of the seal faces into the engine. Lubricate the sealing surface of the hub with clean engine oil, install the crankshaft pulley, and secure it with a new center bolt tightened to the specified torque. Complete the installation by reversing the removal steps and reconnect the battery.