Replacing the transmission in a 1990 Lincoln Town Car is a major undertaking, but with the right tools, knowledge, and a little patience, it’s a task that even an experienced DIYer can handle.
Step 1⁚ Gather the Necessary Tools and Parts
Before you begin, ensure you have the following⁚
- New transmission (compatible with your 1990 Town Car)
- Transmission fluid and filter
- Torque wrench
- Socket set
- Wrench set
- Jack and jack stands
- Floor jack (for lifting the transmission)
- Transmission jack (for supporting the transmission)
- Breaker bar
- Pry bar
- Shop towels
- Safety glasses
- Gloves
Step 2⁚ Prepare the Vehicle
1. Park the vehicle on a level surface and engage the parking brake.
2. Disconnect the negative battery terminal.
3. Raise the vehicle using the jack and secure it with jack stands. Make sure the vehicle is securely supported before proceeding.
Step 3⁚ Drain the Transmission Fluid
1; Locate the transmission drain plug. It’s usually located on the bottom of the transmission pan.
2. Place a drain pan underneath the plug and loosen the plug with a wrench.
3. Allow the fluid to drain completely.
4. Once the fluid has drained, tighten the drain plug back into place.
Step 4⁚ Remove the Old Transmission
1. Disconnect the transmission cooler lines.
2. Disconnect the electrical connectors going to the transmission;
3. Disconnect the driveshaft from the transmission;
4. Remove the transmission mount bolts.
5. Using the transmission jack, carefully lower the transmission until it clears the engine and bell housing.
6. Slide the transmission out from under the vehicle.
Step 5⁚ Install the New Transmission
1. Using the transmission jack, carefully lift the new transmission into place.
2. Connect the driveshaft to the transmission.
3. Connect the electrical connectors.
4. Connect the transmission cooler lines.
5. Install the transmission mount bolts.
6. Tighten all bolts to the specified torque settings.
Step 6⁚ Fill the Transmission with Fluid
1. Remove the transmission dipstick.
2. Pour the recommended amount of transmission fluid into the dipstick tube.
3. Replace the dipstick and start the engine.
4. Check the transmission fluid level and add more fluid as needed.
Step 7⁚ Test Drive and Final Adjustments
1. After replacing the transmission, start the engine and allow it to warm up.
2; Carefully test drive the vehicle to ensure that the transmission is shifting properly.
3; Make any necessary adjustments to the transmission fluid level.
Important Notes
This guide is meant to provide a general overview of the process. Replacing a transmission is a complex procedure and may require specialized tools and knowledge. It’s recommended to consult a qualified mechanic if you are not comfortable performing this repair yourself.