Audi A4

Since 1994 of release

Repair and car operation

Audi А4
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ Exhaust system
- Cooling system
   So there is a cooling
   Check of level of a cooling liquid
   Antifreeze check
   Check of system of cooling on tightness
   Zapornaja cover of system of cooling
   The thermostat
   The help at malfunctions
   The water pump
   Klinovoj belt of the water pump
   Various models of fans
   The vjazkostnyj fan
   The fan of a radiator with the electric drive
   Infringements in work of the fan of a radiator
   The help at malfunctions
+ Fuel tank and the fuel pump
+ The air filter and channels всасывания
+ Injection system
+ Coupling
+ Transmission and the main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tyres
+ The electrotechnical equipment
+ Ignition system
+ Illumination
+ The alarm equipment
+ Tools and devices
+ Heating and ventilation
+ Body details
+ Salon
Search of malfunctions
Technical characteristics

The water pump

The cooling liquid by means of the water pump circulates in the closed contour.

At the four-cylinder engine the water pump settles down in the direction of travel ahead at the left at the engine and is put in action клиновым by a belt.

At the six-cylinder engine the water pump is put in action by an outer side of a gear belt.

The water pump is not subject to maintenance service. If it loses tightness or publishes milling sounds, it is necessary to replace it – repair is impossible.

The water pump at the four-cylinder engine settles down at the left ahead at the engine.

1 – a flange from outside a drive;
2 – a pulley of a gear belt of an intermediate shaft;

3 – the bearing case;
4 – an arm.

The water pump (arrow) of the six-cylinder engine is ahead at the engine block. At it a drive from an underside of a gear belt.

Dismantle of the water pump

The four-cylinder engine

The new lining is in addition used. The one who buys the water pump on a fold of spare parts Audi on an exchange, receives the pump in gathering with the case (it is a back detail of the case of the pump). As new detail Audi the bearing case is delivered only separate, i.e. A forward part of the pump with лопастным a wheel, the bearing and a flange. In shops get only this knot.


  1. Dismantle of the case of the bearing: in the beginning remove поликлиновой and клиновой belts.
  2. Dismantle the device a tension поликлинового a belt.
  3. Dismantle the top and bottom covers of a gear belt.
  4. Dismantle a gear belt and a pulley of a gear belt of an intermediate shaft.
  5. Loosen the seven screw connections between the forward case of the bearing and the case of the water pump. The pump wheel settles down in the bearing case.
  6. Replace a lining between the case of the bearing and the case of the water pump.
  7. At installation the bearing case screw up on 10 Nanometers, fixing bolts of a pulley клинового a belt of the water pump on 20 Nanometers.
  8. Impose a gear belt, establish phases timing.
  9. Dismantle of the case of the water pump in gathering: the way of actions the same that is described regarding the case of the water pump, but it is not necessary to remove a gear belt. This method assumes dismantle of an arm of the generator and сервонасоса. At installation it is necessary to replace also a lining between the case of the pump and the engine block.
  10. The inhaling moments: an arm сервонасоса: 25 Nanometers, a generator arm: 35 Nanometers.

Dismantle of the water pump

The six-cylinder engine

In this case dismantle of the case of the water pump by own strength and, except that, removal of a gear belt is impossible. Therefore preliminary find out, there are for these purposes necessary tools.


  1. Dismantle a klinovo-ridge belt (has undressed the Generator).
  2. Dismantle a gear belt (the head Engines).
  3. Loosen the nine bolts ahead on the case of the water pump, remove the case.
  4. At installation replace a lining, bolts in two steps tighten in the end with effort of 10 Nanometers.
  5. Impose a gear belt, necessarily check up phases timing (the head Engines).