Peugeot405
1. The maintenance instruction
2. Maintenance service
3. Engines
4. Fuel system
5. Systems of greasing, cooling
    5.1. Greasing system
    5.2. Cooling system
      5.2.1. Hoses of system of cooling
      5.2.2. A radiator
      5.2.3. The thermostat
      5.2.4. The fan of cooling of a radiator
      5.2.5. The pump of system of cooling
      5.2.6. Plums of a cooling liquid
      5.2.7. Pouring of a cooling liquid and removal of air from system
6. Release system
7. Coupling
8. Transmissions
9. Power shafts
10. A steering
11. Suspension brackets
12. Brake system
13. A body
14. An electric equipment


5.2. Cooling system
THE GENERAL DATA

Cooling system

1 – a radiator,
2 – the thermostat,
3 – the case of the thermostat,
4 – the case of connection of pipelines,
5 – a dividing element,
6 – the pump of a cooling liquid, 		7 – pipelines of system of cooling,
8 – pipelines of warming up of an inlet collector,
9, 10 – pipelines of heating,
11 – a jellied stopper of a cooling liquid,
12 – the temperature gauge

The cooling system – the closed type, under pressure, includes the water pump with a drive from a gear belt, an aluminium radiator with a compound broad tank, the electric fan of cooling, the thermostat, system of heating devices, hoses and switches.

The system functions as follows. The cold cooling liquid from the radiator basis passes through a hose to the pump and is pumped over through the main channels of the block of cylinders and oil radiators (if are available). After cooling of cylinders of the engine, chambers of combustion and saddles of valves the cooling liquid reaches an underside of the thermostat which is originally closed. Also the cooling liquid passes through system of heating and comes back through the block of cylinders to the pump.

At the cold engine the cooling liquid circulates only through the block of cylinders, a head of the block of cylinders and heating system. When the cooling liquid reaches the predetermined temperature, the thermostat opens and the cooling liquid passes through the top hose to a radiator. As the cooling liquid circulates through a radiator, it is cooled by air stream at movement of the car or the radiator fan at parking with working engine. After achievement of the basis of a radiator the cooling liquid is cooled also a cycle repeats.

The electric fan of system of cooling copes a thermoswitch. At certain temperature of a cooling liquid the temperature-sensitive element includes the fan.
The prevention

At opening of a cover of a broad tank on the hot engine it is necessary to be careful, as leaving hot steams can lead to strong burns.

Do not suppose hit of a cooling liquid on clothes and a paint and varnish covering of a body, otherwise wash out a surface a water considerable quantity.