Caution: If high-power electrical consumers are later installed on the vehicle, it must be checked whether the power of the installed alternator is sufficient. If necessary, you can install a more powerful generator.
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 amount of charging current so that the voltage remains at 14 V regardless of the engine speed.
Caution: Generators are commercially available as exchange devices. The cost of a damaged generator is counted towards the purchase of a new or repaired one.
When working on electrical equipment in the engine compartment, be sure to disconnect the negative cable (-) battery.
Caution: This will erase the electronic memory entries, such as data in 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 alternator with the battery connected.
- When carrying out electric welding, be sure to disconnect the battery.
4-cylinder petrol engine
Withdrawal
1. Disconnect the negative cable (-) battery.
Warning: Follow the instructions in Section Replacing the battery.
2. Remove the engine top cover, refer to Section Removal and installation of the upper engine cover / lower protection of the engine compartment / subframe.
3. Remove the bottom cover of the engine, refer to Section Removal and installation of the upper engine cover / lower protection of the engine compartment / subframe.
4. Drain the coolant from the radiator, refer to Section Coolant replacement.
5. Release a collar and remove a hose of a cooling liquid from a branch pipe of a radiator, above the generator.
6. Turn away bolts of fastening and remove the control unit over the fan of a radiator, put it aside.
7. Loosen the V-belt and remove it from the alternator pulley, refer to Section Removal and installation of a belt of a drive of auxiliary units.
8. Depending on the vehicle model, disconnect the alternator connector from (1) before (3).
9. Turn out 4 screws of fastening (arrows) top and bottom and remove the alternator from the engine.
10/ Disconnect the 30/B+ terminal wire from the alternator.
Installation
1. Torque the terminal 30/B+ wire 16Nm and generator to engine 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
Withdrawal
1. Disconnect the negative cable (-) battery.
Warning: Follow the instructions in Section Replacing the battery.
2. Remove the engine top cover, refer to Section Removal and installation of the upper engine cover / lower protection of the engine compartment / subframe.
3. Loosen the V-belt and remove it from the alternator pulley, refer to Section Removal and installation of a belt of a drive of auxiliary units.
4. Holding the viscous fan drive pulley 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 shroud.
6. Disconnect the alternator connector and disconnect the 30/B+ terminal wire from the alternator.
7. Turn out two bolts of fastening (arrows) and remove the alternator from the engine.
Installation
1. Fix the alternator to the engine with torque 25Nm.
2. Fasten the wire of terminal 30/+ with torque 16Nm.
3. Fasten the viscous fan on the bearing with torque 45Nm.
4. Further installation is carried out in the reverse order of removal. After installation, start the engine and check the operation of the V-belt.
6-cylinder petrol engine
Withdrawal
1. Disconnect the negative cable (-) battery.
Warning: Follow the instructions in Section Replacing the battery.
2. Remove the engine top cover, refer to Section Removal and installation of the upper engine cover / lower protection of the engine compartment / subframe.
3. Remove forward the bottom cover of the engine, refer to Section Removal and installation of the upper engine cover / lower protection of the engine compartment / subframe.
4. Loosen the tension of the V-belt and remove it from the alternator pulley, refer to Section Removal and installation of a belt of a drive of auxiliary units.
5. Cut the cable tie and release the starter cable from the holder.
6. Automatic transmission: Disconnect the holder of pipelines of liquid for АТ.
7. Disconnect the generator connector and disconnect the 30/B+ terminal from the generator.
8. Turn out two screws of fastening (arrows on the accompanying illustration) and remove the alternator from the engine.
Installation
1. Torque the generator 22Nm (screw M8) or 45Nm (screw M10) on the engine.
2. Torque the terminal 30/B+ wire 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
Withdrawal
1. Disconnect the negative cable (-) battery.
Warning: Follow the instructions in Section Replacing the battery.
2. Remove the engine top cover, refer to Section Removal and installation of the upper engine cover / lower protection of the engine compartment / subframe.
3. Remove the lower engine cover forward, refer to Section Removal and installation of the upper engine cover / lower protection of the engine compartment / subframe.
4. Set the front panel to the maintenance position, refer to Section Setting the Front Panel to the Maintenance Position.
5. Disconnect the viscous fan.
6. Disconnect the toothed belt cover at the front left and right.
7. Disconnect the V-belt cover, pay attention to the spacer.
8. Remove the V-belt, refer to Section Removal and installation of a belt of a drive of auxiliary units.
9. Disconnect the alternator connector and disconnect the 30/B+ terminal wire from the alternator.
10. Turn away bolts of fastening (1) And (2) and disconnect the engine hydraulic mount connector.
11. Remove the generator from the engine and take it down.
Caution: When doing this, carefully move the coolant pipes aside.
Installation
1. Fix the alternator to the engine with torque 25Nm.
2. Fasten the wire of terminal 30/+ with torque 16Nm.
3. Fasten the viscous fan on 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.
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