Audi A4, S4

Since 2000 of release

Repair and car operation



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-35°S

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-25°S

40 %

To-35°S

50 %

To-40°S

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

87°С

Full opening

102°С

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

180±10

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