Mercedes W124

since 1985-1995 of release

Repair and car operation



W124 Mercedes
+ Governing bodies and control devices
+ MAINTENANCE
+ 2. Maintenance (diesel engines)
+ ENGINE
+ 4. Repair of 6-cylinder petrol SOHC engines
+ 5. Repair of 6-cylinder petrol DOHC engines
+ 6. Repair of the diesel engine established in the car
+ 7. Major maintenance of engines
+ COOLING SYSTEM
+ FUEL SYSTEM
+ 10. System of injection of BOSCH CIS-E fuel (KE-JETRONIC)
+ 11. System of injection of BOSCH HFM fuel
+ 12. Fuel system of diesel engines
+ 13. Fuel system of diesel engines
- SYSTEMS OF START, IGNITION
   14.2. General information
   14.3. Rules of care of the accumulator
   14.4. Accumulator check
   14.5. Battery charging
   14.6. Accumulator
   14.7. Charging system
   14.8. Generator
   14.9. Replacement of the block of a regulator of tension and shchetkoderzhatel
   14.10. System of start of the engine
   14.11. Starter
+ 15. System of ignition of 4-cylinder petrol engines
+ 16. System of ignition of four-cylinder petrol engines
+ PRESTARTING HEATING
+ TRANSMISSION
+ 19. Mechanical transmission
+ 20. Automatic transmission
+ POWER SHAFTS
+ BRAKE SYSTEM
+ SUSPENSION BRACKET
+ BODY
+ ELECTRIC EQUIPMENT
+ CHECK OF MALFUNCTIONS






14.2. General information

The electric equipment of the engine includes system of ignition, a charging and start. As these systems treat the engine, they are considered separately from body electric equipment.

Consumers incorporate to the plusovy power supply a wire, and with minus – through a car body (weight). Such method allows to reduce number of wires and to simplify installation.

On cars low-served or unattended accumulators are established.

The electric system has a dvenadtsativoltovy food with negative grounding and consists of the accumulator, the generator, a starter, consumers of the electric power and electric chains.

The battery charging is made from the generator which is put in action by a belt from a pulley of a cranked shaft.

The starter is represented электродви by a gatel of a direct current with the mixed excitement with the electromagnetic traction relay. At engine start the traction relay moves a leading gear wheel to gearing with a gear wreath of a flywheel before the starter will receive a food from the accumulator. After engine start the coupling of a free wheeling disconnects a starter anchor from a gear wreath of a flywheel.

Precautions

At works on electric system not to damage a semi-wire nikovy devices (diodes and transistors) it is necessary to fulfill the following requirements:

– in operating time of the engine do not disconnect the accumulator, the generator of an alternating current or any electric sockets;
– at carrying out any works remove the negative plug from the accumulator;
– at carrying out electrowelding works on the car disconnect the generator of an alternating current and the electronic control device;
– do not allow operation of the engine with the generator disconnected from electric system;
– do not check operability of the generator, closing its target contacts on weight.