Removing
1. Raise the rear of the car and place on stands.
2. Loosen the union nut and disconnect the speedometer cable.
3. Loosen the bolt.
4. Remove the gearbox and o-ring.
5. If necessary, knock out the pin, remove the gear and thrust washer (arrows indicate pin and O-ring).
6. Check all details.
7. Replace O-ring.
8. If it is necessary to replace the thrust washer, keep in mind that the thickness of the new washer must be equal to the thickness of the replaced one.
9. If defects are found in the gearbox gear, also check the condition of the drive gear in the gearbox.
10. To replace the drive gear of the gearbox, it is necessary to disassemble the gearbox and remove the differential, so this work should be performed in a car service.
Installation
1. Assemble the gearbox and press in a new pin.
2. Replace the O-ring, install the gearbox on the gearbox and tighten the bolt.
3. Attach the speedometer cable, tighten the nut.
4. Lower the car.