LEXUS RX 300
1998-2003 of release
Repair and car operation
Lexus RX 300
+ Cars Lexus RX-300
+ Controls and operation receptions
+ Options and car routine maintenance
+ The engine
- Systems of cooling of the engine, heating, ventilation and air conditioning
- System of cooling of the engine
The general information and safety measures
Removal, check and installation of the water pump
Removal, check and thermostat installation
Check of components of system of cooling
Removal and installation of a radiator and fans
+ Systems of heating, ventilation and air conditioning
+ The power supply system and release of the fulfilled gases
+ Systems of an electric equipment of the engine
+ Automatic transmission and interaxal differential
+ Transmissionnaja line
+ Brake system
+ Suspension bracket and steering
+ Onboard electric equipment
+ Basic schemes of electric connections
System of cooling of the engine
The system of cooling of the engine works on following algorithm. While the engine is not heated-up, the cooling liquid (ОЖ) is pumped over by constantly working pump only in a head and the block of cylinders, and also in the heat exchanger of a heater of salon. At rise in temperature ОЖ to certain level the thermostat opens the big contour of cooling and ОЖ circulates in addition through a radiator (from top to down) and is cooled by air passing through it. At achievement of temperature ОЖ of higher value the electric fan of system of cooling which creates an additional air stream through edges of a radiator for more intensive heat removal from it joins.
Before work in an impellent compartment, especially in the field of the radiator fan, necessarily disconnect a negative wire from the storage battery and a socket of electroconducting of the fan. The radiator fan can join because of effect of heat conductivity even at the switched off ignition.
Do not open a cover of broad tank ОЖ before full cooling of the engine in order to avoid a burn a hot liquid or its steam.
If necessary to open a cover of a broad tank at the hot engine wind with its thick layer of rags. Uncover slowly, gradually reducing pressure of steam.