Air conditioner
Withdrawal
1. Remove the air collection box in the engine compartment, refer to Section Removal and installation of the air intake box.
2. Turn away bolts of fastening and remove a locking wall of a heater -1- from a wall of an impellent compartment -2-, having slightly deflected it upwards.
3. Remove the fresh air dampers -1- on the left and right, for which tilt the lever -2- up.
4. Disconnect the clips -1-, unscrew the screws -2- and remove the cover -3- of the fan motor.
5. Remove the screws (arrows in the illustration) and remove the fan cover.
6. Disconnect the connector -1-.
7. Open the bracket -2- and fold it up.
8. Models 320i, 323i, 328i: Remove the engine top cover, refer to Section Spark plug.
9. Disconnect and remove the fan motor -3- with the impeller forward. At the same time, slightly raise the electric motor at the rear.
Installation
10. Insert the fan motor. At the same time, make sure that the rear cover bar is fixed in the rear window of the engine.
11. Lower the mounting brackets and secure.
12. Connect the connector on the motor.
13. Secure the top cover with five bolts.
14. Insert the fan motor cover and secure it from the top. Press down on the two brackets.
15. Connect the fresh air dampers on the left and right and fix them by moving the lever down.
16. Connect the locking wall of the heater -1- with two holders -2- at the bottom in the wall of the engine compartment. Insert the cover with both pins -3- into the holes -4- of the compartment wall and fasten with two screws -5-. The accompanying illustration shows only the left half of the cover.
17. Install the air collection box in the engine compartment, refer to Section Removal and installation of the air intake box.
18. Models 320i, 323i, 328i: Establish the top covers of the engine, address to the Section Spark plug.
Heater without air conditioner
Withdrawal
19. Remove the air collection box in the engine compartment, refer to Section Removal and installation of the air intake box.
20. Remove the heater barrier wall.
21 Remove the four screws securing the fan impeller and remove it.
22. Turn away a bolt of fastening of a cover of the electric motor of the fan and remove it.
23. Disconnect the connector.
24. Open the motor mounting bracket and fold it up.
25. Models 320i, 323i, 328i: Remove the top engine covers, refer to Section Spark plug.
26. Pull forward the electric motor with the impeller and remove. At the same time, slightly raise the electric motor back.
Installation
27. Install the motor. At the same time, make sure that the rear cover bar is fixed in the rear window of the engine.
28. Fold down the bracket and fix it.
29. Connect the motor connector.
30. Install motor cover and secure with bolt.
31. Install the fan wheel cover and secure with four screws.
32. Establish a locking wall of a heater.
33. Install the air collection box in the engine compartment, refer to Section Removal and installation of the air intake box.
34. 320i, 323i, 328i: Install the engine top covers.