Important Safety Precautions:
* Safety First: Support the vehicle securely on jack stands, never work under a vehicle supported only by a jack. This is crucial for your safety.
* Proper Tools: Use the correct size socket and a breaker bar or impact wrench to loosen the nut. It will be very tight.
* Penetrating Oil: Spray penetrating oil (like PB Blaster) on the nut several hours before attempting to remove it. This will help break the corrosion and make removal much easier.
* Protect the Threads: Use a socket that fits the nut perfectly to avoid rounding off the corners.
* Brake Caliper: Be mindful of the brake caliper. You may need to remove or support it out of the way to access the axle nut easily. Consult a repair manual for specific instructions.
If you are uncomfortable working on your vehicle, take it to a qualified mechanic. Improper removal can damage the axle or other components. A repair manual specific to your year and model Dodge Dakota will provide detailed instructions and diagrams.