Audi A3

Since 1997 of release

Repair and car operation

Audi A3
+ The maintenance instruction
+ Current leaving and service
+ The engine
- Systems of cooling, heating
   + System of cooling of the engine
   + Systems of ventilation, heating and air conditioning
+ The power supply system and release of the fulfilled gases
+ Engine electric equipment
+ Manual box of a gear change
+ Automatic transmission and models with a full drive
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Electroschemes

Systems of cooling, heating



The general parametres


Separate characteristics are resulted also in the text of the Head and in case of compulsion of their performance are allocated by a bold type

Design Thermosiphon with лопастным the water pump. Thermostatic adjustment. With a separate broad tank. The fan with вязкостной муфтой. The additional electric fan joins and switched off by a thermoswitch
Cooling liquid Mix of soft water (60 %) and антифризного a concentrate (40 %)
Antifriznyj concentrate G12 (Red colour) (do not mix with any another)
System volume
Engines 1.6, 1.8 l 5.0 l
Concentration of antifreeze in a cooling liquid for maintenance of frost resistance to
– 35С 50 %
– 25С 40 %
The thermostat
Temperature of the beginning of opening 87С
Temperature of full opening 102С
Valve stroke Not less than 7 mm
Fan thermoswitch  
Inclusion/deenergizing of 1st step 92–97/84–91С
Inclusion/deenergizing of 2nd step 99–105/91–98С
Stopper of a broad tank
The valve of superfluous pressure opens 1.4–1.6 bar
The depression valve opens 0.06–0.1 bar
Conditioner coolant
Type R134a
Volume, гр. 750 50
Refrigerator oil
Type G052 154 A2
Volume, cmi 135 15
Efforts of a tightening of carving connections
The moments of an inhaling of fixture are resulted also in the text of the Head and on some иллюстрациях*.

*Выделенные in the text a bold type the inhaling moments are subject to exact observance; the efforts not allocated with a bold type are resulted only roughly
The water pump on the engine
Engines 15 H m
Thermostat cover 15 H m
The conditioner compressor 45 H m

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