- Use a tyre lever or similar tool to force off the rear drive shaft (3).
- Unscrew tensioning strap (2) and pull off the flexible gaiter.
Note: Note circlip (4) at rear drive shaft.
- Replace circlip (4) if necessary.
- Screw rear wheel drive centrally to holder, BMW # 33 1 510, using bearing stud (8).
- Screw locking arm (9) on firmly.
- Move threaded sockets (6) up to rear wheel drive.
- Tighten with wheel studs (7).
Caution: Make sure that the grub screws (10) do not project as otherwise the neck of the housing could be damaged.
- Tighten grub screws (10) until they are seated.
Caution: Never use a hammer when slackening off hex nut (5), or else the splines may be damaged.
Warning: Hex nut (5) requires a high torque to loosen it.
Note: Use temperature measuring device, BMW # 00 1 900, to check heat rise.
- Heat hex nut (5) on the input bevel pinion (6) to 100°C (212°F) and unscrew with a 36 mm (1.4 in) socket wrench insert and reducing adapter, BMW # 33 1 720.
Warning: Threaded ring (3) requires a high torque to loosen it.
- Heat the housing neck to 120°C (248°F) and unscrew threaded ring (3) with pin wrench, BMW # 331700.
- Remove thrust ring (4) and outer race (1).
- Slacken screws (8).
- Remove locking arm from holder, BMW # 331510.
- Remove screws (8).
- Remove housing cover (7).
- If necessary, use a drift to drive out shaft sealing ring (2).
- Position rear wheel drive with retaining fixture, BMW # 33 1 510, upright.
Caution: To prevent the input bevel pinion (1) from being damaged if it falls out, use a soft underlay.
- Heat bearing seat to 120°C (248°F).
- Remove input bevel pinion (1).
Note: If necessary, lightly tap input bevel pinion (1) to release.
- Remove shim (2) from housing.