Here's a *general* overview of the steps involved, but it's not a comprehensive guide. You should consult a repair manual specific to your 1992 Dodge Dynasty for detailed instructions, torque specifications, and safety precautions. These manuals are available online and from automotive parts stores.
General Steps (Do NOT attempt without proper knowledge and tools):
1. Safety First: Disconnect the battery's negative terminal. Support the vehicle securely on jack stands. Never work under a vehicle supported only by a jack.
2. Drain the Differential: Locate the drain plug on the differential housing and drain the gear oil into a suitable container.
3. Remove the Wheels and Tires: Remove the rear wheels and tires.
4. Disconnect Brake Lines and Cables: Carefully disconnect the brake lines and parking brake cables from the rear axle. Be prepared to deal with brake fluid.
5. Disconnect Driveshafts: Disconnect the driveshafts from the differential. This usually involves unbolting the driveshaft flange from the differential.
6. Remove Suspension Components: This will vary depending on your specific model, but likely involves removing shocks, springs, and possibly other suspension links connected to the axle.
7. Remove the Axle: The axle is likely bolted to the differential housing and the suspension components. Unbolt these connections to remove the axle assembly. This may require significant effort and specialized tools.
8. Install the New Axle: Reverse the removal process to install the new axle. Ensure everything is aligned correctly.
9. Reconnect everything: Reconnect the driveshafts, brake lines, parking brake cables, suspension components, and wheels.
10. Refill Differential: Refill the differential with the correct type and quantity of gear oil specified in your repair manual.
11. Lower the Vehicle: Carefully lower the vehicle.
12. Check for Leaks: Inspect for any leaks around the differential and axle seals.
13. Test Drive: After everything is reconnected, test drive the vehicle to ensure everything is functioning correctly.
Tools You'll Likely Need (This is not an exhaustive list):
* Jack and jack stands
* Wheel chocks
* Wrench set (metric)
* Socket set (metric)
* Torque wrench
* Brake fluid catcher
* Drain pan
* Gear oil
* Axle stands (potentially)
* Possibly a differential press (depending on the specific axle design)
Again, this is a simplified overview. Improperly replacing a rear axle can lead to serious damage to your vehicle and injury to yourself. Consult a professional mechanic or a detailed repair manual for your specific 1992 Dodge Dynasty before attempting this repair.