Audi A4

since 1994 of release

Repair and car operation



A4 Audi
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ exhaust System
- Cooling system
   So there is a cooling
   Check of level of cooling liquid
   Antifreeze check
   Check of system of cooling on tightness
   Radiator
   Locking cover of system of cooling
   Thermostat
   The help at malfunctions
   Water pump
   Maple belt of the water pump
   Various models of fans
   Vyazkostny fan
   The radiator fan with the electric drive
   Violations in operation of the fan of a radiator
   The help at malfunctions
+ Fuel tank and fuel pump
+ Air filter and absorption channels
+ injection System
+ Coupling
+ Transmission and main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tires
+ Electrotechnical equipment
+ ignition System
+ Lighting
+ Alarm equipment
+ Tools and devices
+ Heating and ventilation
+ body Details
+ Salon
Search of malfunctions
Technical characteristics





Water pump

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 by a maple belt.

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

The water pump is not subject to maintenance. 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 a drive;
2–pulley of a gear belt of an intermediate shaft;

3–bearing case;
4–arm.


The water pump (shooter) of the six-cylinder engine is ahead at the engine block. It has a drive from a reverse side of a gear belt.

Dismantle of the water pump

Four-cylinder engine

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

 PERFORMANCE ORDER

  1. Dismantle of the case of the bearing: in the beginning remove poliklinovy and maple belts.
  2. Dismantle the device a tension of a poliklinovy 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. Weaken seven screw connections between the forward case of the bearing and the case of the water pump. The wheel of the pump settles down in the bearing case.
  6. Replace laying between the case of the bearing and the case of the water pump.
  7. At installation the case of the bearing screw up on 10 Nanometers, fixing bolts of a pulley of a maple belt of the water pump on 20 Nanometers.
  8. Impose a gear belt, establish gazoraspredeleniye phases.
  9. Dismantle of the case of the water pump assembled: 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 laying between the case of the pump and the engine block.
  10. Inhaling moments: arm сервонасоса: 25 Nanometers, generator arm: 35 Nanometers.

Dismantle of the water pump

Six-cylinder engine

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

 PERFORMANCE ORDER

  1. Dismantle a klinovo-ridge belt (section Generator).
  2. Dismantle a gear belt (head Engines).
  3. Weaken nine bolts ahead on the case of the water pump, remove the case.
  4. At installation replace laying, bolts in two steps tighten in the end with effort of 10 Nanometers.
  5. Impose a gear belt, surely check gazoraspredeleniye phases (head Engines).