Required tools and materials:
* Set of socket wrenches or wrench for 10, 12, 14, 17, 19 and 22 mm
* 6 mm hex key
* Flat head screwdriver
* Pliers
* New automatic transmission rear oil seal
* Sealant
* Brake cleaner
* Container for collecting automatic transmission fluid
* Stethoscope (optional)
* Electric impact wrench (optional)
Replacement procedure:
1. Preparation
* Provide access to the underside of the vehicle using a lift or traverse.
* Disconnect the battery by removing the negative terminal.
* Drain the automatic transmission fluid by opening the drain plug.
2. Removing the driveshaft
* Mark the position of the driveshaft relative to the differential and gearbox flanges.
*Using a 14mm socket wrench, remove the bolts securing the driveshaft to the gearbox flange.
* Repeat the operation with the bolts securing the driveshaft to the differential flange.
* Slide the driveshaft out of the gearbox.
3. Removing the exhaust manifold
* Remove the bolts holding the exhaust manifold to the cylinder head using a 12mm socket wrench.
* Disconnect the exhaust manifold from the exhaust pipe using a 14 mm wrench.
* Remove the exhaust manifold and set it aside.
4. Removing the rear automatic transmission support
* Using a 19mm socket wrench, remove the bolts securing the rear transmission mount to the transmission.
* Remove the support pad from the gearbox.
5. Removing the torque converter
*Using a 6mm hex wrench, remove the bolts holding the torque converter to the flywheel.
* Gently pull on the torque converter to disconnect it from the transmission. If necessary, use a flathead screwdriver to gently pry the mating apart.
6. Removing the rear cover of the automatic transmission
* Using a 17 mm socket wrench, unscrew the bolts securing the rear automatic transmission cover.
*Remove the back cover.
7. Removing the old oil seal
* Carefully pry off the old rear oil seal using a flat head screwdriver or pliers.
* Thoroughly clean the oil seal seat of dirt and old sealant using brake cleaner.
8. Installing a new oil seal
* Lightly lubricate the working edge of the new oil seal with transmission fluid.
* Insert the new oil seal into the seat, making sure it is oriented correctly.
* Apply a thin layer of sealant around the oil seal seat.
9. Installing the back cover
* Replace the back cover and tighten the bolts using a 17mm socket wrench. Tighten the bolts to the required torque.
10. Installation of torque converter
* Insert the torque converter into the gearbox, ensuring that it engages correctly.
* Tighten the bolts holding the torque converter to the flywheel using a 6mm hex wrench. Tighten the bolts to the required torque.
11. Installation of the automatic transmission rear support
* Reinstall the rear automatic transmission mount and tighten the bolts using a 19 mm socket wrench. Tighten the bolts to the required torque.
12. Installation of the exhaust manifold
* Attach the exhaust manifold to the downpipe using a 14mm wrench.
* Install the exhaust manifold onto the cylinder head and tighten the bolts using a 12mm socket wrench. Tighten the bolts to the required torque.
13. Installing the cardan shaft
* Insert the driveshaft into the gearbox.
* Tighten the bolts securing the driveshaft to the gearbox flange and differential flange using a 14mm socket wrench. Tighten the bolts to the required torque.
14. Filling the automatic transmission with fluid
* Pour fresh automatic transmission fluid into the gearbox through the dipstick.
* Check the fluid level and add if necessary.
15. Completion
* Connect the battery by tightening the negative terminal.
* Start the engine and let it idle for a few minutes.
* Check the tightness of the seal for leaks.
* Using a stethoscope, listen to the automatic transmission for any abnormal noise.
Note:
* It is necessary to use the automatic transmission rear oil seal recommended by the vehicle manufacturer.
* Tighten all bolts to the specified torque specified in your vehicle’s repair manual.
*If you are unsure of your capabilities, consult a mechanic.