BMW 3 series E30

Since 1983-1994 of release

Repair and car operation

+ 1. The maintenance instruction
+ 2. Maintenance service
+ 3. The engine
- 4. Cooling system
   4.2. Specifications
   4.3. Antifreeze
   4.4. The thermostat
   4.5. A radiator
   4.6. Fans and муфта a drive
   4.7. The pump of a cooling liquid
   4.8. The gauge of temperature of a cooling liquid
+ 5. Heating and ventilation
+ 6. Fuel system
+ 7. An exhaust system
+ 8. Transmissions
+ 9. Coupling
+ 10. Brake system
+ 11. A running gear
+ 12. A body
+ 13. An electric equipment
+ 14. A good advice

4.7. The pump of a cooling liquid

The pump of a cooling liquid of the 4-cylinder engine

Sealing ring of the pump of a cooling liquid (М40)

Lining of the pump of a cooling liquid (М40)

In destruction of an epiploon of the pump specifies подтекание liquids from a control aperture in the pump.

The condition of bearings of the pump is checked by check люфта rocking in a cross-section direction (listening on the working engine can not give exact result as the sliping belt or the worn out bearings of the generator can publish a howling sound).

Removal and installation

1. Disconnect the battery from weight.
2. After full cooling of the engine merge a liquid.
3. Remove a fan casing (subsection 4.6 see) and drive belts.
4. Disconnect hoses, remove from the pump гидромуфту and крыльчатку.
Engine M10

5. Turn away bolts and remove the pump.
Engine M20
6. Uncover the ignition distributor, бегунок and a filter, disconnect high-voltage wires.
7. Remove the rotation gauge коленвала.

8. Turn away all bolts of the pump except the bottom.
9. Turn the pump and remove a spring натяжителя a belt and a pin.
10. Turn away the remained bolt and remove the pump.

The prevention

The bolt натяжителя a belt not to turn on. Cam-shaft rotation is not supposed.

Engine M40
11. Turn away bolts of fastening of the pump and remove the pump.

12. If the pump does not give in to removal screw two bolts in apertures in special inflow and rotating them, remove the pump.
13. Installation is carried out upside-down taking into account the following:
      – On engine M40 clear demountable planes and replace уплотнители;
      – On engine M20 wrap the bottom bolt and turn the pump before combination of apertures, having established a spring and a pin. Fastening bolts tighten gradually, doing on 1/4 turns for reception.