BMW 3 Series E30

since 1983-1994 release

Repair and operation of the car

BMW E30
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engine
- 4. Cooling system
   4.2. Specifications
   4.3. Antifreeze
   4.4. Thermostat
   4.5. Radiator
   4.6. Fans and coupling of the drive
   4.7. Pump of cooling liquid
   4.8. Sensor of temperature of cooling liquid
+ 5. Heating and ventilation
+ 6. Fuel system
+ 7. Exhaust system
+ 8. Transmissions
+ 9. Coupling
+ 10. Brake system
+ 11. Running gear
+ 12. Body
+ 13. Electric equipment
+ 14. Useful tips

4. Cooling system

4.1. Introduction

GENERAL INFORMATION

The cooling system and the scheme of an arrangement of hoses of system on 4-cylinder engines

1. Engine
2. Heater radiator
3. Throttle branch pipe
4. Pump of cooling liquid

5. Radiator
6. Thermostat
Shooters specified the direction of a current of liquid.

The cooling system and the scheme of an arrangement of hoses of system on 6-cylinder engines

1. Heater radiator
2. Throttle branch pipe
3. Thermostat
4. Radiator
5. Broad tank

6. Pump of cooling liquid
7. Engine
Shooters specified the direction of a current of liquid.

The cooling system is standard thermostatically controlled, elevated pressure. The thermostat is located: on the M10 engine – in the lower hose of a radiator, on M20 – in the case, in a forward part of the engine and on M40 – under the top cover of a gear belt.

The stopper with the control valve on 4-cylinder engines is in a radiator stopper, on 6-cylinder – in the top part of a transparent plastic tank. Pressure of operation of the valve – either 1,0, or 1,2 atm.