Audi A4, S4
+ Introduction
+ Governing bodies and methods of safe operation
+ Current leaving and service
+ Engine
- Cooling systems, heating and 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 electric equipment of the engine
+ Manual box of gear shifting
+ Automatic transmission
+ Coupling, power shafts and differential
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
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Cooling systems, heating and air conditioner Specifications
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Separate characteristics are provided also in the text of the Head and in case of obligation of their performance are highlighted in bold type. |
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Characteristic |
Value |
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Design |
Thermosiphon with the bladed water pump. Thermostatic adjustment. With a separate broad tank. The fan with the electric drive, joins and switched off from the control unit |
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Cooling liquid |
mix of soft water and antifreeze (1:1), at such structure is provided frost resistance to –35 °C |
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Antifreeze |
"G 012 A8D" (red color) or another, VW/AUDI-TL-774-D meeting standard, for example "Glysantin-Au-Protect/G30". It is allowed to apply "G12" (TL-VW-774-F) of lilac color. G12-lila antifreeze (lilac) can mix up with G12-rot antifreeze (red). On the 8-cylinder engine - only "G12 Plus" |
The volume of system during the replacing, l
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Characteristic |
Value |
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The petrol |
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6.5 |
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7.0 |
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8.5 |
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9.0 |
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12.2 |
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The diesel |
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7.5 |
|
|
9.0 |
Composition of cooling liquid
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Characteristic |
Value |
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Antifreeze share in cooling liquid for ensuring frost resistance |
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to -25 °C |
40% |
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to -35 °C |
50% |
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to -40 °C |
60% |
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Characteristic |
Value |
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Pressure in system |
About 1.2 atm. (the exact size is specified on a cover of a broad tank). The cover has to maintain pressure within two minutes. |
Thermostat
|
Characteristic |
Value |
|
Valve stroke |
not less than 8 mm |
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Beginning of opening |
87 °C |
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Full opening |
102 °C |
Stopper of a broad tank
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Characteristic |
Value |
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The valve of excessive pressure opens, atm. |
1.4-1.6 |
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On a cover pressure of opening of the valve is specified in atm. x 100. If, for example, on a cover costs "140/200", it is about a two-level cover and pressure of opening of the valve makes 1.4 and 2.0 atm. |
Conditioner coolant
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Characteristic |
Value |
|
Type |
R134a (do not use R12) |
|
Volume, gr. |
480-530 |
Refrigerator oil
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Characteristic |
Value |
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Type |
G 052 300 A2 |
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Volume, cm 3
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180±10 |
Efforts of a tightening of threaded connections, Nanometer
The moments of a tightening of fixture are given also in the text of the Head and on some illyustratsiyakh*. * The moments of a tightening highlighted in the text in bold type are subject to exact observance; the efforts which are not highlighted in bold type are given only approximately.
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Characteristic |
Value |
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Water pump |
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L engines 1.6, 1.8, 2.0, 3.0 |
15 |
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Engines of 2.4 l |
10 |
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Diesel engines of 2.5 l |
10 |
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