Note:
- To protect the gasket surfaces of the engine block, place the old gasket under the bearing puller.
- Always renew the mainshaft sealing ring.

Heat the left of the engine block to 80-100°C (176-212°F).
Using bearing puller plate, BMW No. 11 6 561, spindle, BMW No. 11 6 562, and spreader sleeve, BMW No. 11 6 564, pull off the ball bearing.
Drive out the mainshaft sealing ring from the inside.
Heat the right of the engine block to 80-100°C (176-212°F).
Use a suitable tool such as a socket or similar to press the ball bearing through to the other side from outside.
Installation is the reverse of the removal procedure: pay particular attention to the following.
ID Note: The sealed ends of the cage must point outwards.
To install the ball bearing, heat the engine block to 80-100°C (176-212°F) and spray the ball bearing with BMW chilling spray.
Drive in the shaft sealing ring with sleeve, BMW No. 23 4 540, and drift, BMW No. 23 4 550.