For example, generators fitted to diesel-powered vehicles are more powerful than those fitted to gasoline-powered vehicles.
Attention! If additional electrical equipment is installed, check that the power of the existing generator is sufficient. If necessary, install a more powerful generator. If it is necessary to repair the generator, it is necessary to remove the engine together with the front suspension mounts.
The alternating current generated by the generator is converted by a rectifier located on the diode board into direct current.
The voltage regulator changes the charge current according to the degree of discharge of the battery by turning the excitation current on and off. At the same time, the voltage regulator maintains a constant operating voltage (about 14 V), regardless of the generator speed.
When working on the generator, certain precautions must be observed to prevent damage to the electrical system.
1. Disconnect the wire terminal from the negative pole of the battery «masses» (-).
Attention! When the battery is disconnected from the radio, the security code is deleted, as well as all automatic settings on the radio. Therefore, first read the provisions of the chapter «Battery - removal and installation».
2. Do not disconnect the battery or voltage regulator while the engine is running.
3. Do not remove the generator with the battery connected.
4. Disconnect the battery when doing electric welding.
Removing
5. Disconnect the wire terminal from the negative pole of the battery «masses» (-).
Attention! When the battery is disconnected from the radio, the security code is deleted, as well as all automatic settings on the radio. Therefore, first read the provisions of the chapter «Battery - removal and installation».
6. Remove the ribbed drive belt of the generator and other auxiliary units, see relevant chapter.
Cars with air conditioning
Attention! Do not open the air conditioner refrigerant circuit. Skin contact with coolant causes frostbite. If refrigerant comes into contact with the skin, immediately rinse the skin with cold water for at least 15 minutes. The refrigerant is colorless, odorless and heavier than air. If a refrigerant leaks, people near the floor where the vehicle is parked or in rooms below the leak may suffocate.
7. Unscrew the four bolts that secure the compressor 1 of the air conditioner to the cylinder block, remove it and fix it on the body without disconnecting the refrigerant circulation hoses from the compressor (see illustration). Do not kink or damage the air conditioning hoses.
8. Disconnect 2 wires B+ and D+ from the generator (see illustration 14.7).
9. Unscrew two bolts of fastening of the generator and remove it, having lowered down.
Installation
10. Install the generator in place, screw in the generator mounting bolts and tighten them with a force of 20 Nm.
11. Fasten the wire nuts to the B+ and D+ terminals.
12. Reinstall the air conditioning compressor by screwing in the four mounting bolts and tightening them to 20 Nm.
13. Lay the ribbed belt.
14. Attach ground wire terminal (-) battery.
15. Set up the digital clock.
16. Enter the security code into the radio.