How do you replace modified rear crankshaft seal ford explorer 2004?

To replace the modified rear crankshaft seal on a 2004 Ford Explorer, first, ensure the vehicle is securely lifted and supported. Remove the transmission or transfer case to access the crankshaft. Then, clean the area around the old seal, remove it carefully, and install the new seal, ensuring it is seated evenly. Reassemble the transmission or transfer case and check for any leaks after starting the engine.