Audi 80/Avant (B4)

since 1991-1995 of release

Repair and car operation

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 system of cooling on tightness
   Carving cover of a broad tank
   List of malfunctions
   Water pump
   Maple belt of the water pump
   Fan of system of cooling
   Malfunctions of the fan of system of cooling
   List of malfunctions
+ Fuel tank and fuel pump
+ Air filter and airintaking channels
+ injection System
+ Coupling
+ Transmission and transmission
+ Suspension bracket and steering
+ Brake system
+ Anti-blocking system of brakes
+ Wheels and tires
+ Body electrosystem
+ ignition System
+ Lighting
+ Signalling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ body Elements
+ Search of malfunctions
+ Specifications

Check of system of cooling on tightness

In system of cooling it is most easier to define defective places at the hot motor and, respectively, working pressure in cooling system. But in this case for check of hoses gloves are surely necessary, differently it is possible to burn.

  • pass hoses at a radiator and the engine, including hoses to heating system?
  • Cracks in hoses? Kneading, define, as far as hoses are firm – in the latter case it is necessary to replace them immediately.
  • At a razminaniye of tubes it is possible to define and the damages formed as a result having bitten rodents.
  • As far as the ends of hoses come on the corresponding branch pipes?
  • Whether
  • coupling bolts of collars are tightened?
  • The rusted collars can unexpectedly burst during a trip and at total working pressure in cooling system. To replace!
  • The workshop supervises tightness of system of cooling by the special air pump with a manual drive and a manometer.
  • This device is established on an opening of a compensatory tank and pressure 1 bar is pumped up.
  • If within 1 — 2 minute pressure does not go down, the system of cooling is considered tight.