BMW 3 series E46

Since 1998 of release

Repair and car operation



The BMW of 3 series Е46
+ Cars BMW 3 (Е46)
+ Current leaving and service
+ The engine
- Systems of cooling, heating
   - System of cooling of the engine
      Replacement of a cooling liquid
      Thermoswitch check
      Check of system of cooling under pressure
      Connection and separation quick disconnect муфты
      Removal and thermostat installation
      Removal and installation of the fan / of a casing of the fan
      Removal and installation of the fan with вязкостной муфтой
      Removal and radiator installation
      Removal and installation of the pump of a cooling liquid
   + Heater and the conditioner of air of salon
+ Power supply systems, injection and release
+ Engine electric equipment
+ РКПП and трансмиссионная a line
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Electric equipment schemes





Removal and thermostat installation

The thermostat opens the big contour of circulation at increase of temperature of a cooling liquid. If owing to damage the thermostat does not open, the engine overheats. It can be defined under the index of temperature of the cooling liquid, being in an emergency zone, at that time when the radiator simultaneously remains cold. The damaged thermostat can remain also opened after decrease in temperature of a cooling liquid. A sign of it is that the engine does not reach the working temperature and that value of temperature on the index of a cooling liquid grows more slowly, than usually or heating becomes weak in the winter.

 REMOVAL

The thermostat is built strongly in the case and cannot be taken out therefrom. In the presence of defect it is necessary to replace it together with the case.

1 Merge cooling liquid, address to Section Replacement of a cooling liquid.

Models 320i, 323i, 328i


2 Models with the conditioner: Disconnect the fan with вязкостной муфтой, address to Section Removal and installation of the fan with вязкостной муфтой.
3 Turn away bolts of fastening and remove an eye in front on the engine.

Models 320d


4 Remove from the face party of the engine radiator AGR.
5 Disconnect the pipeline of a cooling liquid under the case of the thermostat at a head of cylinders and at the holder.

6 Disconnect hoses of a cooling liquid from the case of the thermostat-1 from the forward party of the block of cylinders. For this purpose pull upward a screw-driver a wire clamp, address to Section Connection and separation quick disconnect муфты.

On an illustration the case of the thermostat of models 320i, 323i, 328i and 320d is shown.

7 Rasstykujte a socket at the thermostat case.
8 Turn away the case of the thermostat and remove together with a sealing lining-2.

The thermostat cannot be checked up in the usual image by immersing in capacity with hot water as the temperature of its opening lies above a boiling point and makes 105С.



 INSTALLATION

9 Clear sealing surfaces on the case and a cover and wipe a rag moistened in spirit.
10 In regular intervals fix the case of the thermostat with a new sealing lining the moment 10 Н•м.

Do not tighten fastening bolts too strongly.

11 In the presence of deformations replace sealing rings on quick disconnect муфтах. Press wire clamps. Put on hoses, thus муфта it should be fixed distinctly.
12 Join a socket at the thermostat case.
13 Models 320i, 323i, 328i: Fix the moment 20 Н•м an engine eye.
14 Models 320i, 323i, 328i with the conditioner: Establish the fan with вязкостной муфтой, address to Section Removal and installation of the fan with вязкостной муфтой.
15 Models 320d: Fix the pipeline of a cooling liquid under the case of the thermostat with the sealing lining. Fix the pipeline on the holder. Establish radiator AGR, address to Section Removal and installation of the inlet pipeline.
16 Fill system with a liquid and remove air, address to Section Replacement of a cooling liquid.
17 Start and warm up the engine. Check up, whether the radiator has got warm and whether the thermostat case is tight. In the presence of leakings tighten fastening bolts.