Audi 80/Avant (B4)

since 1991-1995 release

Repair and operation of the car



Audi 80/Avant
+ Technical specification
+ Engines
+ System of production of the fulfilled gases
- Cooling system
   Check of level of cooling liquid
   Frost resistance check
   Check of the cooling system on tightness
   Radiator
   Carving cover of a broad tank
   Thermostat
   List of malfunctions
   Water pump
   Maple belt of the water pump
   Cooling system fan
   Malfunctions of the fan of the cooling system
   List of malfunctions
+ Fuel tank and fuel pump
+ Air filter and airintaking channels
+ System of injection
+ Coupling
+ Transmission and transmission
+ Suspension bracket and steering
+ Brake system
+ Anti-blocking system of brakes
+ Wheels and tires
+ Body electrical system
+ System of ignition
+ Lighting
+ Signaling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ Body elements
+ Search of malfunctions
+ Specifications





Water pump

The water pump (1) of the 4-cylinder engine is located at the left ahead on the engine. The position (2) shows a thermostat case cover, shooters point to some of fixing bolts of a cover of the bearing of the water pump.

The water pump (shooter) of the 5-cylinder engine is located on the engine ahead and is given by a gear belt.

The water pump (shooter) of the 6-cylinder engine is located on a forward part of the block of cylinders. It is given by the return surface of a gear belt.

In order that cooling liquid could circulate in the cooling system, it accelerates the water pump. It is put in action differently, depending on engine type:

  • At models with the 4-cylinder engine the pump is located in the direction of the movement ahead to the left of the engine and is set in motion by a maple belt.
  • At models with the 5-cylinder engine the pump is located too ahead at the left, however it is set in motion by a gear belt.
  • The pump of the 6-cylinder engine is set in motion by an external side surface of a gear belt.
    During all service life the water pump does not need service. If it becomes untight or makes the whistling sounds, it just needs to be replaced as it is not subject to repair.

Removal of the water pump

It will be required to you or new sealing laying (4-and 6-cylinder engines) or a new sealing ring (the 5-cylinder engine).

The owner of the car with the 4-cylinder engine buying the new water pump receives the pump assembled with the case (a back part of the case with the pump). Pumps for the 5-cylinder engine can be distinguished on the beaten-out number 5 in the field of sealing laying of a flange – have to be completed with a sealing ring with an allowance with a diameter of 5 mm.

 PERFORMANCE ORDER

  1. During the work with the 4-cylinder engine at first to take off maple a belt.
  2. To remove the protection cover of a gear belt (head Dvigateli).
  3. To weaken in total seven screws between the forward case of the bearing and the case of the water pump. The wheel of the pump is located in the bearing case.
  4. To replace laying between the case of the bearing and the case of the water pump.
  5. In case the case of the water pump entirely is removed (use of the spare part), at installation sealing laying between the case and the block of cylinders also has to be replaced.
  6. To twirl the bearing case the moment of 10 N • m, to tighten tightening bolts of a pulley of klinoremenny transfer the moment of 25 N • m.
  7. During the work with the 5-cylinder engine it is impossible to call removal of the water pump simple work:
  8. At first it is necessary to remove the pump of the amplifier of steering together with a maple belt.
  9. To remove the protection cover of a gear belt (head Dvigateli).
  10. To weaken a gear belt and to take off it from a gear wheel of the water pump.
  11. To turn out tightening bolts of the water pump, to remove the pump.
  12. To install the new pump with a new sealing ring.
  13. To tighten tightening bolts of the water pump the moment of 20 N • m.
  14. To put on a gear belt, it is obligatory to check gas distribution phases (head Dvigateli).
  15. To pull a gear belt.
  16. Other assembly goes without problems.
  17. During the work with the 6-cylinder engine removal of the water pump with own forces rests against removal of a gear belt again.
  18. To remove poliklinovy a belt (head Generator).
  19. To remove a gear belt (head Dvigateli).
  20. To weaken nine bolts in front on the case of the water pump, to remove the case
  21. At installation to replace sealing laying, to tighten bolts for two calling, the last the moment of 10 N • m.
  22. To put on a gear belt, it is obligatory to check gas distribution phases (head Dvigateli).







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