W203 since 2000 of release
Repair and operation of the car
+ Mercedes-Benz cars of class C (W-203)
+ Operation manual
+ Routine maintenance
- Cooling system and heating
- Cooling system
Antifreeze - a security measure from freezing
Replacement of cooling liquid - general comments
Removal and replacement of hoses of the cooling system
Removal and installation of the thermostat
Check of the thermostat
Check of the cooling system under pressure
Removal and installation of the pump of cooling liquid
Removal and installation of the fan
Removal and installation of a radiator
+ Systems of ventilation, heating and air conditioning
+ Power supply system and release
+ Engine electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Onboard electric equipment
General informationUntil the engine is heated-up, cooling liquid circulates only in a head and the block of cylinders and in the heat exchanger of a heater of salon. At increase of temperature of cooling liquid the thermostat opens a big contour of cooling. Cooling liquid goes through a radiator constantly working pump. Liquid passes through a radiator from top to down and is cooled with the air passing through it.
Heater and ventilation
The heater consists of the fans and heat exchangers located in blocks of forward and back parts of salon. Hot cooling liquid passes through heat exchangers. When moving the handle of management of the modes of a heater located on the control panel valves open, and hot air begins to come to interior of the car. If to turn on the heater fan, air will move in salon forcibly.
Intaking air before getting to salon, passes through the filter (address the Head Routine maintenance). The main share of particles of dust will settle in the filter. It is necessary to observe frequency of replacement of the filter. The filter littered by dust will limit air supply in salon that will lead to an air stagnation in salon.
Distribution of streams of air of system of ventilation is carried out by means of gates. The air circulation mode is provided. Gates are run by servo-drivers.