Audi A4, S4
Introduction
Controls and receptions of safe operation
Current leaving and service
The engine
- Systems of cooling, heating and the air conditioner
    Cooling system
    Systems of ventilation, heating and air conditioning
Power supply systems, release and decrease in toxicity of the fulfilled gases
Systems of an electric equipment of the engine
Manual box of a gear change
Automatic transmission
Coupling, power shafts and differential
Brake system
Suspension bracket and steering
Body
Onboard electric equipment





Systems of cooling, heating and the air conditioner

Specifications

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.

The characteristic

Value

Design

Thermosiphon with лопастным the water pump. Thermostatic adjustment. With a separate broad tank. The fan with an electric drive, joins and switched off from the management block

Cooling liquid

The mix of soft water and antifreeze (1:1), at such structure is provided frost resistance to-35S

Antifreeze

G 012 A8D (red colour) or another, corresponding to norm VW/AUDI-TL-774-D, for example Glysantin-Au-Protect/G30. It is supposed to apply G12 (TL-VW-774-F) lilac colour. Antifreeze G12-lila (lilac) can mix up with antifreeze G12-rot (red). On the 8-cylinder engine - only G12 Plus

System volume at replacement, l

The characteristic

Value

The petrol

    Engines of 1.6 l

6.5

    Engines of 1.8 and 2.0 l

7.0

    Engines of 2.4 l

8.5

    Engines of 3.0 l

9.0

    Engines of 4.2 l
12.2

The diesel

    Engines of 1.9 l
7.5
    Engines of 2.5 l
9.0

Structure of a cooling liquid

The characteristic

Value

Antifreeze share in a cooling liquid for frost resistance maintenance

To-25S

40 %

To-35S

50 %

To-40S

60 %

The characteristic

Value

Pressure in system

Nearby 1.2 атм. (The exact size is specified on a cover of a broad tank). The cover should maintain pressure within two minutes.

The thermostat

The characteristic

Value

Valve stroke

Not less than 8 mm

The opening beginning

87С

Full opening

102С

Stopper of a broad tank

The characteristic

Value

The valve of superfluous pressure opens, атм.

1.4-1.6

On a cover pressure of opening of the valve in атм is resulted. х 100. If, for example, on a cover costs 140/200, it is a question of a two-level cover and pressure of opening of the valve makes 1.4 and 2.0 атм.

Conditioner coolant

The characteristic

Value

Type

R134a (Do not use R12)

Volume, гр.

480-530

Refrigerator oil

The characteristic

Value

Type

G 052 300 А2

Volume, sm 3

18010

Efforts of a tightening of carving connections, Nanometer

The moments of a tightening of fixture are resulted also in the text of the Head and on some иллюстрациях*.

*Выделенные in the text a bold type the tightening moments are subject to exact observance; the efforts not allocated with a bold type are resulted only roughly.

The characteristic

Value

The water pump

Engines 1.6, 1.8, 2.0, 3.0 l

15

Engines of 2.4 l

10

Diesel engines of 2.5 l

10