All of these seals can be replaced without disassembling the transmission, although replacement of the rotation converter seal requires the removal of the transmission and converter.
Rotary converter seal
1. Remove transmission and rotation converter (see Section Removal and installation of automatic transmission).
2. Inspect the bushing in the rotary converter hub. If it is worn out, the new seal will soon start to leak again. Try to remove any sharp edges or burrs with fine sandpaper. If the hub is too damaged to be ground, replace the rotation transducer.
3. Using a special bent oil seal remover or screwdriver, remove the old oil seal from the transmission case.
4. Be careful not to damage the seal seat surface when removing the old seal.
5. Lubricate the lips of the new oil seal with fresh fluid and carefully install it into the seat using a replacement head or a piece of pipe with an outer diameter slightly smaller than the diameter of the oil seal.
6. Install the transducer making sure it is fully connected to the front pump (To do this, rotate the transducer during installation until it is fully seated). Install Transmission/Converter Assembly (see Section Removal and installation of automatic transmission).
Transmission selector lever shaft seal
1. Jack up the vehicle and place it securely on axle stands.
2. Remove the transmission selector lever from its shaft on the side of the transmission (see illustration). Do not disconnect the drive from the lever, otherwise it will have to be adjusted again.
3. Remove the old oil seal with a special tool or a small screwdriver. Be careful not to damage the surface of the seal seat.
4. Lubricate the lips of the new oil seal with fresh fluid and carefully install it into the seat using a replacement head or a piece of pipe with an outer diameter slightly smaller than the diameter of the oil seal.
5. Install the selector lever and tighten the nut. If you have not disconnected the drive, then there is no need to adjust it.
Output shaft seal
1. Jack up the rear of the vehicle and place it securely on axle stands. Be sure to block the front wheels to prevent the vehicle from rolling off the supports.
2. Where necessary to ensure free access, remove the exhaust system (see chapter Supply system).
3. Remove the cardan shaft (see chapter Clutch).
4. Bend the back of the lock bar tab, hold the flange in place, and loosen the flange nut with a 30mm socket.
5. Remove the old oil seal with a special tool or a small screwdriver. Be careful not to damage the surface of the seal seat.
6. Apply a thin coat of liquid to the jaws of the new oil seal, then clean the end of the output shaft. Slide the stuffing box onto the shaft and carefully place it in place using a replacement head or a piece of pipe with an outside diameter slightly smaller than the outside diameter of the stuffing box.
7. Install the flange. Coat the side of the nut facing the flange with sealant to prevent leaks. Tighten the flange nut to the required torque. Install a new retaining bar and bend the tongue into the slot.
8. Perform the rest of the installation in the reverse order of removal.
All seals
Check transmission fluid level and top up if necessary (Chapter Car maintenance).