Prerequisites:
- Ensure you have the proper tools and safety equipment.
- Park the car in a safe location, apply the parking brake, and support the front of the vehicle with jack stands.
Step-by-Step Process:
1. Prepare the Vehicle:
- Disconnect the battery to prevent any electrical issues during the process.
- Remove the air cleaner assembly to gain access to the transmission.
- Remove the starter motor for easier access to the transmission.
2. Remove Transmission Fluid:
- Locate the transmission fluid drain plug and place a drain pan beneath it.
- Unscrew the drain plug to allow the fluid to drain.
3. Detach Transmission Lines:
- Identify and detach the transmission fluid cooler lines. Use the appropriate wrenches and containers to catch any remaining fluid.
4. Remove Driveshafts:
- Disconnect the driveshafts from the transmission. This involves removing the nuts and bolts that secure the driveshafts to the transmission output flanges.
5. Detach Shift Linkage:
- Locate and disconnect the shift linkage from the transmission. Consult your vehicle's manual for the exact location and method.
6. Support the Engine and Transmission:
- Use a transmission jack or other appropriate support to hold up the engine and transmission assembly before completely detaching the transmission.
7. Unbolt Transmission Mounts:
- Locate and remove the bolts that secure the transmission mounts to the vehicle's frame. This will release the transmission from the engine.
8. Separate Transmission from Engine:
- Carefully pull the transmission away from the engine. This may require some maneuvering to clear obstacles. Make sure the supporting jack or stand is adjusted accordingly.
9. Remove Clutch (If Applicable):
- If your Corolla has a manual transmission, remove the clutch and pressure plate.
10. Clean and Inspect:
- Clean the transmission mounting surfaces and inspect the transmission for any signs of damage or leaks.
Reinstallation:
11. Prepare for Reinstallation:
- Replace any worn-out parts or seals if needed.
- Apply a sealant to the transmission mounting surfaces as specified by your vehicle's manual.
12. Align Transmission:
- Carefully align the transmission with the engine's input shaft.
13. Bolt Transmission Mounts:
- Secure the transmission mounts back in place.
14. Reattach Driveshafts:
- Reconnect the driveshafts to the transmission.
15. Reconnect Transmission Lines:
- Reattach the transmission fluid cooler lines.
16. Reattach Shift Linkage:
- Reconnect the shift linkage to the transmission.
17. Reinstall Starter:
- Reinstall the starter motor.
18. Reinstall Air Cleaner:
- Put the air cleaner assembly back in place.
19. Reconnect Battery:
- Reconnect the car battery.
20. Refill Transmission Fluid:
- Add new transmission fluid through the appropriate fill port. Check the owner's manual for the correct type and amount of fluid.
Test and Adjustments:
- Lower the vehicle from the jack stands and start the engine.
- Check for any leaks and verify that the transmission shifts smoothly through all gears.
Safety Precautions:
- Follow all safety precautions and guidelines for working with vehicles, especially while handling heavy components like the transmission.
- Wear appropriate safety gear, including gloves and eye protection.
- Use the proper tools and equipment to avoid injury and damage to the vehicle.
Remember, this is a general overview, and the exact procedure may vary depending on your Corolla's specific model and year. Refer to your vehicle's service manual or seek assistance from a qualified mechanic if you are not confident in performing the transmission removal yourself.
