BMW 7_ая the E38 series from 1994 to 2002
1. Introduction
2. Governing bodies and operation receptions
3. Settings and routine maintenance of the car
4. Engine
5. Systems of cooling of the engine, heating, ventilation and air conditioning
5.1. System of cooling of the engine
5.1.1. General information and precautionary measures
5.1.2. Removal and installation of a casing of the fan
5.1.3. Removal and installation of a radiator of system of cooling
5.1.4. Removal and installation of a broad tank
5.1.5. Removal and installation of the additional fan assembled with a casing
5.1.6. Removal and installation of the water pump
5.1.7. Removal and installation of the coupling of a drive of the fan
5.1.8. Removal and thermostat installation
5.1.9. Removal and installation of a collector of system of cooling
5.2. Systems of heating, ventilation and air conditioning
6. A power supply system and production of the fulfilled gases
7. Systems of electric equipment of the engine
8. Manual box of gear shifting and coupling
9. Automatic transmission
10. Kardanny and power shafts, reducer, differential and stupichny assemblies
11. Brake system
12. Suspension bracket and steering
13. Body
14. Onboard electric equipment
15. Electric equipment schemes


5-1-sistema-okhlazhdeniya-dvigatelya.html

5.1. System of cooling of the engine

General information and precautionary measures

The system of cooling of the engine works on the following algorithm. While the engine is not heated-up, cooling liquid (OZh) is pumped over by constantly working water pump only in a head and the block of cylinders, and also in the heat exchanger of a heater of salon. At OZh temperature increase to a certain level the thermostat opens a big contour of cooling and OZh circulates in addition through a radiator, being cooled with air passing through it. At achievement of temperature of OZh of higher value the electric fan of system of cooling which creates an additional air stream through radiator edges for more intensive heat removal from it turns on.

1 — the Radiator
2 — the Broad tank
3 — a salon Heater
4 — the Thermostat
5 — the Pump of cooling liquid

6 — the Block of cylinders
7 — Return
8 — Giving
9 — Heating of a butterfly valve
10 — the heater Crane

The water pump is given by a belt from a cranked shaft.

Before work in an impellent compartment, especially in the field of the radiator fan, surely disconnect a negative wire from the storage battery and I will corrode fan electroconductings since it can join because of effect of heat conductivity even at the switched-off ignition.

Do not open a cover of a broad tank of OZh or a radiator before complete cooling of the engine in order to avoid a burn hot liquid or its steam.

If necessary to open a cover of a broad tank at the hot engine wind it with rags. Uncover slowly, gradually reducing a vapor pressure.

The description of check and correction of level of OZh, OZh replacement, and also some checks of system of cooling are provided in Sections Check of levels of liquids, control of leaks, Check of a condition and replacement of hoses and tubes in an impellent compartment, localization of leaks and Replacement of cooling liquid of Head of Control and routine maintenance of the car.


«previous page
5. Systems of cooling of the engine, heating, ventilation and air conditioning
following page»
5.1.1. General information and precautionary measures









http://b3-b4.ru/