Withdrawal
1. Disconnect the negative cable (-) battery with the ignition off. The battery is located in the luggage compartment behind the cover on the right side. For BMW 316i, 318i, the battery is located in the engine compartment.
Disconnecting the battery clears the fault memory of some controls. If necessary, read the fault memory before disconnecting the battery. Refer to Section Troubleshooting. It is desirable to carry out work in the conditions of a service station.
Bosch generator
2. Remove V-belt -1- and alternator -2-, refer to relevant section.
3. Turn away three screws of fastening -6- and remove a protective cover -5-.
4. Unscrew the two mounting screws -4- of the voltage regulator -3- on the rear cover of the generator and carefully remove it.
5. Replace the brushes -2- on the voltage regulator -1- if their length is 5 mm or less. To do this, unsolder the cables.
6 Check the slip rings for wear. Refinish and polish if necessary.
7. Clean the contact surfaces and check the stiffness of the contact springs, replace if necessary.
Installation
8. Insert the brushes -A- and the springs -B- into the brush holder -C-. Solder the wires.
9. Hold the wires with pliers to prevent solder from getting on the brush wires.
As a result of solder getting on the cables, the latter become unacceptably hard and unsuitable for installation.
10 An insulating tube should be fixed near the cable soldering point.
11. After installing new brushes, it is necessary to check the ease of their movement in the brush holder.
12. Fasten the voltage regulator first by hand, and then carefully press into the final position and secure.
13. Attach the protective cover to the rear of the generator.
14. Install the generator, refer to the appropriate section.
Alternator VALEO
Withdrawal
15. Remove the generator.
16. Turn away three screws of fastening and remove a protective cover of the generator.
17. Turn away two screws of fastening and one nut and take out a voltage regulator.
Installation
18. Replace the new voltage regulator with mounting cover and lightly tighten it.
19. Remove the mounting cover upwards.
20. Attach the protective cover.
21. Install the generator.