Here's a general overview, but remember this is not a substitute for a proper repair manual:
Tools and Materials You'll Need:
* New Transmission Fluid: The correct type and quantity are crucial. Your owner's manual or a parts store will specify the type (usually Mercon or Mercon V) and amount. Get more than you think you need – you might need to do a few flushes.
* Transmission Drain Pan: A large capacity pan to catch the old fluid.
* Torque Wrench: To ensure proper tightening of the drain and fill plugs.
* Wrench (sockets and possibly a box end wrench): Sizes will depend on your specific transmission but typically include 1/2" drive sockets.
* Funnel: For adding new fluid.
* Jack and Jack Stands: Safely support the vehicle.
* Wheel Chocks: For added safety.
* Pump (optional but recommended): A fluid transfer pump can make adding new fluid much easier and cleaner. A hand pump or a power pump would work.
* Gloves: To protect your hands.
* Rags or shop towels: For cleanup.
* Transmission Fluid Cooler Lines Disconnect Tool (optional but helpful): May be needed if you plan on a more complete fluid exchange.
Procedure (General Steps - Consult your repair manual for specifics):
1. Safety First: Park on a level surface, engage the parking brake, and use wheel chocks. Raise the vehicle safely using a jack and secure it with jack stands.
2. Locate the Transmission Pan: This is usually located underneath the transmission. You might need to consult a repair manual or online diagrams to locate it precisely.
3. Drain the Transmission Fluid: Carefully position the drain pan under the transmission pan. Loosen and remove the drain plug, allowing the fluid to drain completely. Be cautious; the fluid will be hot. Let it drain for a considerable time.
4. Remove the Transmission Pan: Once drained, remove the transmission pan bolts. Be aware that there might be a gasket between the pan and the transmission; this gasket will likely need replacing. Some pans have magnets at the bottom that may attract metal shavings; inspect these.
5. Replace the Pan Gasket (if necessary): Clean the mating surfaces of the transmission pan and the transmission case. Install a new gasket.
6. Reinstall the Transmission Pan: Carefully reattach the transmission pan, tightening the bolts to the manufacturer's specified torque.
7. Locate the Transmission Fill Tube: This might be a separate tube or part of the dipstick assembly. Your repair manual will show you its location.
8. Add New Transmission Fluid: Using a funnel and potentially a pump, add the recommended amount of new transmission fluid. Refer to your manual for the correct amount. *Don't overfill.* On some models, you might need to add fluid until it flows out of the fill tube.
9. Check the Fluid Level (if applicable): Some transmissions have a dipstick for checking fluid level. Others require a specialized procedure for checking the level with the engine running. Your repair manual will detail this.
10. Lower the Vehicle: Carefully lower the vehicle from the jack stands.
11. Test Drive: After the fluid change, test drive the vehicle to ensure proper transmission operation. Check for leaks after the test drive.
Important Considerations:
* Multiple Flushes: A single drain and fill may not replace all the old fluid. For a more thorough fluid exchange, consider doing multiple drain and fills with intervals of driving between each.
* Transmission Type: The procedure might vary slightly depending on the specific transmission in your 1993 Lincoln Town Car. Knowing the transmission type (e.g., AOD, 4R70W) is essential.
* Professional Help: If you are not comfortable performing this task, it's best to take your vehicle to a qualified mechanic. Improperly changing transmission fluid can cause significant damage to your transmission, leading to costly repairs.
This is a simplified overview. Always consult a repair manual specific to your 1993 Lincoln Town Car before attempting this repair. The manual will provide precise instructions, torque specifications, and other crucial information needed for a safe and successful transmission fluid change.
