Vehicle starting and charging system Mercedes Sprinter I (903)

Battery — General Information
The 12V battery installed in cars has six cells (cans), which consist of positive and negative pole plates immersed in a sulfuric acid solution (electrolyte). The...

Description of battery characteristics
Designation Located on the battery case, contains technical data. For example: 12 V 66 Ah 200 A (12 V is the nominal voltage, 66 Ah is the nominal capacity, 200 A is the...

Checking and servicing the battery
Electrolyte level The battery is maintenance-free. It is filled with an electrolyte - a solution of sulfuric acid in distilled water. Since water may evaporate from the...

Detection of a faulty consumer
If a battery that was working properly the day before suddenly stops producing current, it is possible that a faulty consumer in the circuit has discharged it overnight....

Alternator — General Information
When the engine is not running, electrical consumers are powered by the battery. When the engine is running, the generator serves as the current source. Despite its...

Precautions when working with the generator circuit
When working on the generator circuit in any way, the following precautions must be observed: never disconnect the battery terminals or voltage regulator leads while the...

Checking the generator without dismantling
When driving, with the charging system operating normally, the indicator lamp in the instrument cluster should not light. If this is not the case, the generator or...

Removal and installation of the generator — removal and installation
Removal and installation of the generator should be carried out in the following order: disconnect the negative terminal from the battery; place the car in front on...

Replacing the brushes and voltage regulator of the generator
It is recommended that you only perform independent adjustment or repair of the generator and the voltage regulator connected to it if you have experience with such...

Disassembly and repair of the generator
Figure 310. Bosch alternator design: 1 - nut, 50 Nm; 2 - washer; 3 - pulley; 4 - thrust washer; 5 - washer; 6 - cooling impeller; 7 — bolt; 8 - tightening bolt; 9 —...

Starter — General Information
Mercedes-Benz Sprinter vehicles are equipped with a starter with forced engagement and disengagement of the gear. When starting the engine, the starter operates as...

Checking the starter
To test the starter under full voltage, connect terminals "30" (big conclusion) and "50" (small wire next to large terminal) with a wire whose cross-sectional area is...

Removal and installation the starter — removing and installing
Removal and installation of the starter must be carried out as follows: disconnect the negative terminal from the battery; disconnect the wire from the starter; unscrew...

Starter repair
Figure 317. Starter device: 1 — anchor shaft; 2 — drive lever; 3 - positive wire connection contact; 4 - traction relay; 5 — collector; 6 - brushes; 7 - anchor; 8 -...

Possible starter malfunctions
The recommendations provided here will help you solve the problem of troubleshooting on site. When turning the key in the ignition switch, the starter turns slowly, does...

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Vito 1 (1996-2003)