Removing the differential bearing
1. Remove the gearbox.
2. Place the gearbox on a dismantling stand.
3. Remove the fifth gear housing.
4. Remove the synchronizer and gears of the fifth gear.
5. Remove the gearbox housing.
6. Remove gearbox shafts.
7. Remove differential.
Transmissions with closed differential
Note: The procedure is identical for both bearings.
8. Remove the bearing outer race with a round drift (1).
9. Remove the bearing using a puller (2).
Transmissions with open differential
Side of the ring gear
10. Insert a small rod (3) into the housing and place it across the bearing (4).
11. Remove the bearing (4), using a press and pipe (5).
Sun gear side
12. Remove retaining ring (6) bearing (7).
13. Remove the bearing (7) with a press and pipe (8) 50 mm diameter inside the case.
Bearing installation
1. Clean with a cleaning agent:
- shafts,
- shaft mounting surfaces,
- differential,
- gearbox housing,
- differential case.
Attention:
Be sure to replace with new:
- oil seals,
- o-rings of circular cross-section,
- clutch thrust bearing guide;
- gear retaining rings
- cylindrical pins,
- retaining rings of bearings of primary and secondary shafts,
- gear shift rod hub springs,
- hydraulic clutch release cylinder (if installed),
- magnet,
- differential retaining ring
- differential nut.
Transmissions with closed differential
2. Press in the bearing with a press and socket (10) 40 mm in diameter.
3. Press in the bearing outer race using tools C and F from the J Series Transmission Repair Kit (Bvi. 1554) (11).
Transmissions with open differential
Side of the ring gear
Note: Bearing O-ring (12) should be located on the opposite side of the ring gear.
4. Press the bearing in using a press and bearing locating rings (Bvi. 1059) (13), using the bearing outer ring as a stop.
Sun gear side
Note: Bearing O-ring (14) should be located on the opposite side of the ring gear.
5. Press in the bearing using a press and a 65 mm socket (15), using the bearing outer ring as a stop.
6. Install a new retaining ring.
Finishing operations for all bearings
7. Install differential.
8. Install the gearbox shafts.
9. Install the gearbox housing.
10. Install the synchronizer and fifth gears.
11. Install the fifth gear housing.
12. Remove the gearbox from the dismantling stand.
13. Install the gearbox on the car.