Table of contents: 4-cylinder petrol engine ↓ 4-cylinder diesel engine ↓ 6-cylinder petrol engine ↓ 6-cylinder diesel engine ↓
The car is equipped with an alternator. Depending on the model and equipment, the car can be equipped with generators of different power.
Caution: If high-power electrical consumers are installed on the vehicle at a later date, it is necessary to check whether the installed generator has sufficient power. If necessary, a more powerful generator can be installed.
The alternating current generated by the generator is rectified into direct current, for which a diode rectifier is used. The battery is charged with direct current. The voltage regulator controls the magnitude of the charging current so that the voltage remains equal to 14 V regardless of the engine speed.
Warning: Generators are available as exchange units. The cost of the damaged generator is credited towards the purchase of a new or refurbished one.
When working on electrical equipment in the engine compartment, be sure to disconnect the negative (-) battery cable.
Warning: This will erase the electronic memory units, such as the engine fault memory. Before disconnecting the battery, please read the instructions in Section Replacing the battery.
- Do not disconnect the battery or voltage regulator while the engine is running.
- Do not remove the generator while the battery is connected.
- When carrying out electric welding work, be sure to disconnect the battery.
4-cylinder petrol engine
Removal
1. Disconnect the negative (-) battery cable.
Warning: Follow the instructions in Section Replacing the battery.
2. Remove the top engine cover, refer to Section Removal and installation the upper engine cover/lower engine compartment protection/subframe.
3. Remove the lower engine cover, refer to Section Removal and installation the upper engine cover/lower engine compartment protection/subframe.
4. Drain the coolant from the radiator, refer to Section Replacing the coolant.
5. Loosen the clamp and remove the coolant hose from the radiator pipe, above the generator.
6. Loosen the mounting bolts and remove the control unit above the radiator fan, place it aside.
7. Loosen the V-belt and remove it from the alternator pulley, refer to Section Removal and installation the accessory drive belt.
8. Depending on the vehicle model, disconnect the generator connector from (1) to (3).
9. Remove the 4 mounting screws (arrows) at the top and bottom and remove the generator from the engine.
10/ Disconnect the 30/V+ terminal wire from the generator.
Installation
1. Secure the 30/V+ terminal wire with torque 16Nm and the generator to the engine with torque 23Nm.
2. Further installation is carried out in the reverse order of removal.
3. After installation, start the engine and check the operation of the V-belt.
4-cylinder diesel engine
Removal
1. Disconnect the negative (-) battery cable.
Warning: Follow the instructions in Section Replacing the battery.
2. Remove the top engine cover, refer to Section Removal and installation the upper engine cover/lower engine compartment protection/subframe.
3. Loosen the V-belt and remove it from the alternator pulley, refer to Section Removal and installation the accessory drive belt.
4. Holding the fan drive pulley with a viscous coupling with a special key 3212 or KLANN KL-0149-131 from turning, unscrew it with a socket wrench.
5. Remove the impeller and place it in the fan housing.
6. Disconnect the generator connector and disconnect the 30/V+ terminal wire from the generator.
7. Unscrew the two mounting bolts (arrows) and remove the generator from the engine.
Installation
1. Secure the generator to the engine with torque 25Nm.
2. Tighten the terminal wire with 30/+ torque 16Nm.
3. Secure the viscous coupling fan to the bearing with torque 45Nm.
4. Further installation is performed in the reverse order of removal. After installation, start the engine and check the operation of the V-belt.
6-cylinder petrol engine
Removal
1. Disconnect the negative (-) battery cable.
Warning: Follow the instructions in Section Replacing the battery.
2. Remove the top engine cover, refer to Section Removal and installation the upper engine cover/lower engine compartment protection/subframe.
3. Remove the lower engine cover forward, refer to Section Removal and installation the upper engine cover/lower engine compartment protection/subframe.
4. Loosen the V-belt tension and remove it from the alternator pulley, refer to Section Removal and installation the accessory drive belt.
5. Cut the cable tie and release the starter cable from the holder.
6. Automatic transmission: Disconnect the AT fluid line bracket.
7. Disconnect the generator connector and disconnect the 30/V+ terminal from the generator.
8. Remove the two mounting screws (arrows in the accompanying illustration) and remove the generator from the engine.
Installation
1. Secure the generator with torque 22Nm (M8 screw) or 45Nm (M10 screw) on the engine.
2. Secure the 30/V+ terminal wire with torque 16Nm.
3. Further installation is carried out in the reverse order of removal.
4. After installation, start the engine and check the operation of the V-belt.
6-cylinder diesel engine
Removal
1. Disconnect the negative (-) battery cable.
Warning: Follow the instructions in Section Replacing the battery.
2. Remove the top engine cover, refer to Section Removal and installation the upper engine cover/lower engine compartment protection/subframe.
3. Remove the lower engine cover forward, refer to Section Removal and installation the upper engine cover/lower engine compartment protection/subframe.
4. Set the front panel to the service position, refer to Section Setting the front panel to the maintenance position.
5. Disconnect the fan with viscous coupling.
6. Disconnect the timing belt cover at the front left and right.
7. Disconnect the V-belt cover, paying attention to the spacer sleeve.
8. Remove the V-belt, refer to Section Removal and installation the accessory drive belt.
9. Disconnect the generator connector and disconnect the 30/V+ terminal wire from the generator.
10. Loosen the mounting bolts (1) and (2) and disconnect the engine hydraulic support connector.
11. Remove the generator from the engine and lift it downwards.
Caution: Carefully move the coolant lines aside when doing this.
Installation
1. Secure the generator to the engine with torque 25Nm.
2. Tighten the terminal wire with 30/+ torque 16Nm.
3. Secure the viscous coupling fan to the bearing with torque 45Nm.
4. Further installation is carried out in the reverse order of removal.
5. After installation, start the engine and check the operation of the V-belt.