On vehicles with an M 102 engine, the water pump and generator are driven by a V-belt.
1. Disconnect the wire «masses» from the battery.
2. Release nuts of bolts of fastening of an arm of the generator.
3. Move the alternator to the engine by releasing the upper bolt securing the alternator to the tension bar.
4. Remove the belt.
5. To install the belt, move the alternator away from the engine and tighten the top bolt securing the alternator to the tension bar until the belt deflection is 1 cm when pressed with your thumb, or adjust the belt tension with the Krikit tool.