Attention! The procedure for replacing the oil seal is the same for manual transmission and automatic transmission.
1. The cause of oil leakage is usually the wear of the oil seal and bushing in the shank of the gearbox housing, as well as the oil seal of the speedometer drive gear and the sealing ring (see photo).
2. The crankcase shank oil seal is located at the end of the gearbox, next to the propeller shaft. Raise the car and put it on stands.
3 Remove the axle shaft.
All manual transmissions except 4-speed with cast iron crankcase (RPO M20) and all automatic transmissions
4. With light strokes, displace the dust cover on the shank of the gearbox housing and remove it. On a 5-speed cast iron gearbox Unscrew the nuts, remove the bolts and disconnect the universal joint flange from the gearbox.
5. Pry with a screwdriver and carefully remove the oil seal and bushing (provided for parts of cars) (see photo).
6. If the stuffing box and bushing cannot be removed, then a special tool should be used to remove the stuffing box.
7. Using a mandrel, press a new oil seal onto the gearbox shaft (see photo). Install a new bushing.
8. Next, the assembly is performed in the reverse order.
Gearbox RPO M20 with cast iron crankcase
9. Disconnect the parking brake.
10. Disconnect the wire connector from the bearing housing.
11. Turn away nuts of a flange of the universal joint and disconnect a hinge flange.
12. Disconnect the gearbox support, raise the gearbox with a jack.
13.0 Unscrew the bolts and remove the bearing housing.
14. Remove the bearing housing gasket.
15. Pry and remove the gland.
16. Lubricate the outside of the new oil seal with fixing compound.
17. Press a new oil seal into the bearing housing with light hammer blows through a block of wood.
18. Next, the assembly is performed in the reverse order.
All checkpoints
19. Lubricate the splines of the output shaft of the gearbox and the outer part of the spline of the propeller shaft yoke with a low-viscosity grease, attach the shaft without damaging the oil seal.