How to Change the Transmission Filter on a 1989 Town Car

Changing the transmission filter on a 1989 Ford Town Car is a relatively straightforward process, but it does require some basic mechanical knowledge and tools. Here’s a step-by-step guide to help you get the job done⁚

Tools and Materials You’ll Need

• Jack and jack stands
• Torque wrench
• Socket wrench set
• Pliers
• New transmission filter
• New transmission fluid (Dexron III or equivalent)
• Drain pan
• Shop towels
• Safety glasses
• Gloves

Step-by-Step Instructions

1. Prepare the Vehicle

1. Park the car on a level surface and engage the parking brake.
2. Raise the vehicle using the jack and secure it with jack stands. Make sure the car is securely supported before proceeding.
3. Locate the transmission pan. It’s typically located on the bottom of the transmission, near the rear of the vehicle.

2. Drain the Transmission Fluid

1. Place the drain pan underneath the transmission pan.
2. Locate the drain plug on the transmission pan. It’s usually a square or hexagonal-shaped plug.
3. Carefully loosen the drain plug using a socket wrench. Be careful not to drop the plug into the drain pan.
4. Allow the transmission fluid to drain completely into the drain pan. This may take some time.

3. Remove the Transmission Pan

1. Once the fluid has drained, use a socket wrench to remove the bolts securing the transmission pan to the transmission case.
2. Carefully lift the transmission pan away from the transmission, being mindful of the old gasket.

4. Replace the Filter

1. Inspect the old transmission filter for any signs of damage or debris.
2. Remove the old filter from the pan.
3. Install the new filter into the pan, ensuring it’s securely seated.

5. Reinstall the Transmission Pan

1. Apply a thin layer of transmission gasket sealant to the mating surfaces of the transmission pan and transmission case;
2. Carefully align the transmission pan with the transmission case and re-install the bolts. Tighten them to the specified torque, which is typically 18-20 foot-pounds.

6. Refill the Transmission

1. With the transmission pan securely in place, remove the dipstick from the transmission.
2. Slowly add new transmission fluid through the dipstick tube, checking the level frequently.
3. Once the fluid level reaches the “Full” mark on the dipstick, stop adding fluid.

7. Finish Up

1. Lower the vehicle using the jack.
2. Start the engine and let it idle for a few minutes.
3. Check the transmission fluid level again and add more fluid if necessary.
4. Take the vehicle for a short test drive to ensure the transmission is functioning properly.

Important Notes

• Be sure to use the correct type of transmission fluid for your 1989 Town Car. Refer to your owner’s manual for the recommended fluid.
• If you’re not comfortable performing this procedure yourself, it’s best to take your car to a qualified mechanic.
• Always wear safety glasses and gloves when working on your car.

By following these steps, you can successfully change the transmission filter on your 1989 Ford Town Car. Remember to check the fluid level after driving the vehicle for a short distance and top it off as needed.