1. Safety Precautions:
- Ensure the vehicle is parked on level ground, in "P" (Park) gear, and the parking brake is engaged.
- Disconnect the negative battery terminal to prevent any electrical accidents.
- Wear appropriate safety gear such as gloves and eye protection.
2. Remove Transmission Fluid Pan:
- Locate the transmission fluid pan underneath the vehicle.
- Loosen the bolts or screws securing the pan and carefully remove it.
- Drain the transmission fluid into a suitable container.
3. Remove Transmission Mount:
- Locate the transmission mount and remove the nuts or bolts securing it to the transmission housing.
- Support the transmission with a jack or transmission jack.
4. Disconnect Shift Linkage and Electrical Connections:
- Locate and disconnect the shift linkage from the transmission.
- Disconnect any electrical connectors or wiring harnesses attached to the transmission.
5. Remove Driveshafts:
- Remove the driveshafts (axles) by unbolting them from the transmission. Some models may require removing CV joints.
6. Loosen Torque Converter Bolts:
- From inside the engine bay, remove the torque converter cover.
- Locate and loosen, but do not remove, the torque converter bolts or nuts.
7. Remove Transmission Bolts:
- Remove the bolts or nuts holding the transmission to the engine. There may be bell housing bolts as well.
8. Separate Transmission from Engine:
- Gently pry or use appropriate tools to separate the transmission from the engine. It might require some maneuvering.
9. Replace Oil Pump Gasket (if required)
-Remove the oil pump cover located on the left side of the transmission housing.
-Remove and discard the old gasket.
-Apply a thin coat of transmission fluid to the new gasket and install it in place.
-Reinstall the oil pump cover and tighten the bolts.
10. Install New Transmission:
- Carefully align the new transmission with the engine and gently guide it into place. Be cautious not to drop the transmission.
11. Attach Transmission:
- Reinstall the transmission bolts or nuts and tighten them to the recommended torque specifications.
12. Reconnect Driveshafts:
- Reinstall the driveshafts and secure them with the appropriate nuts or bolts.
13. Connect Electrical Connections:
- Reconnect the electrical connectors and wiring harnesses to the transmission.
14. Reinstall Transmission Mount:
- Reattach the transmission mount and tighten the mounting hardware.
15. Fill Transmission Fluid:
- Refill the transmission with the recommended amount and type of fluid through the transmission fluid fill plug.
16. Reconnect Shift Linkage:
- Reinstall the shift linkage and ensure proper functioning.
17. Reconnect Battery:
- Reconnect the negative battery terminal and double-check all electrical connections.
18. Lower Vehicle:
- Carefully lower the vehicle from the jack or transmission jack.
19. Start and Test:
- Start the engine and check for leaks or unusual noises.
- Shift through all gear positions and ensure smooth gear changes.
20. Test Drive:
- Take the vehicle for a test drive and check for proper functionality of the transmission.
Note:
This process can be complex, and it's recommended to refer to the vehicle's specific service manual or consult with a qualified mechanic to ensure proper installation and functionality of the transmission.
