Audi A4 with 2001- 2005 of release.
1. Operation and car maintenance service
2. The engine
2.1. The general data
2.2. Predvaritlnye checks
2.3. A Mehanichsky part (petrol engines 2,0л)
2.4. Greasing system
2.5. Cooling system
2.5.1. Removal and installation of the thermostat of system of the cooling operated on algorithm
2.5.2. Check of the thermostat of system of the cooling operated on algorithm
2.5.3. Removal and installation of the water pump
2.5.4. Опрессовка cooling systems
2.6. Injection system
2.7. System of release of the fulfilled gases
2.8. A mechanical part (petrol engines 3,0; 3,2)
2.9. A mechanical part (petrol engines 4,2)
2.10. A mechanical part (diesel engines 2,0)
2.11. Tables
3. Transmission
4. A running gear
5. The steering mechanism
6. Brake system
7. An onboard electric equipment
8. A body
9. Electric equipment schemes
 




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2.5.4. Опрессовка cooling systems

The engine should have working temperature.

Procedure for test
Open a cover of a broad tank of system of cooling.

Fig. 2.215. Installation of a tester with адептером on a broad tank


Establish a tester of system of cooling with the adapter on a broad tank (fig. 2.215).
By means of the manual pump of a tester create pressure approximately 1,0 bar.
If pressure constantly falls, to find and eliminate негерметичность.

Check редукционного the valve in a cover

Fig. 2.216. Installation of a tester with адептером on a tank cover


Establish a tester of system of cooling with the adapter on a tank cover (fig. 2.216).
Involve the manual pump.
At superfluous pressure 1,4–1,6 bar редукционный the valve should open.


2.5.3. Removal and installation of the water pump

2.6. Injection system