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





Maple belt of the water pump

At the six-cylinder engine the drive of the water pump is provided with a gear belt – here all should be as it should be.

In a different way business is at the four-cylinder engine: this engine never should be got without a maple belt and, therefore, without a drive of the water pump! Otherwise you risk to receive heavy damage of the engine.

Cold water is heavier hot. It and without the water pump slowly circulates via the engine and a radiator. This thermosiphon and independently circulating cooling is not enough for modern engines. More detailed information is placed in the section Generator.