Repair and service Audi A8 in body D2 with 1994 for 1999 of release.
1. Car operation
2. Maintenance service
3. Petrol engines of 2,8 l
4. Petrol engines of 3,7 and 4,2 l
5. Diesel engines of 2,5 l
6. Diesel engines of 3,3 l
7. Systems of ignition and injection of fuel of petrol engines
8. System of release of the fulfilled gases of cars with petrol engines
9. The power supply system of diesel engines
10. System of prestarting heating of diesel engines
11. System of release of the fulfilled gases of cars with diesel engines
12. Greasing system
13. Cooling system
13.1. The general data
13.2. The thermostat
13.3. Replacement of a cooling liquid
13.4. The water pump of petrol engines of 2,8 l
13.5. Connecting pipes of system of cooling
13.6. The water pump of petrol engines of 3,7 and 4,2 l
13.7. The thermostat of petrol engines of 3,7 and 4,2 l
13.8. The water pump of diesel engines of 2,5 l
13.9. The thermostat of the diesel engine of 2,5 l
13.10. Forward section of a pipe of system of cooling of the diesel engine of 2,5 l
13.11. The left section of a pipe of system of cooling of the diesel engine of 2,5 l
13.12. The right section of a pipe of system of cooling of the diesel engine of 2,5 l
13.13. The central section of a pipe of system of cooling of the diesel engine of 2,5 l
13.14. The water pump of diesel engines of 3,3 l
13.15. The thermostat of diesel engines of 3,3 l
13.16. A forward average pipe of system of cooling of the diesel engine of 3,3 l
13.17. The left average pipe of system of cooling of the diesel engine of 3,3 l
13.18. A radiator
14. Coupling
15. A transmission
16. Shaft of a drive of forward wheels
17. Features of a design of transmission of all-wheel drive cars
18. A suspension bracket
19. Wheels and tyres
20. A steering
21. Brake system
22. A body
23. Heating and air-conditioning system
24. An electric equipment
25. Electric schemes
 



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13.5. Connecting pipes of system of cooling

Small average pipe of system of cooling of the petrol engine of 2,8 l
Removal
Merge cooling liquid.
Remove an inlet collector.

Fig. 7–9. Pipes of system of cooling of the petrol engine of 2,8 l: 1 – a small average pipe; 2 – from the heat exchanger; 3 – a bolt, 10 Нм; 4 – to the heat exchanger; 5 – a bolt, 10 Нм; 6 – the big average pipe; 7 – a sealing ring; 8 – the union, 15 Нм; 9 – to a broad tank; 10 – a bolt, 10 Нм, 11 – to an average pipe; 12 – sealing rings; 13 – the gauge of temperature of a cooling liquid; 14, 15, 16 – sealing rings; 17 – a bolt, 10 Нм



Fig. 7–10. A small average pipe of system of cooling of the petrol engine of 2,8 l: 1 – a bolt, 10 Нм; 2 – a collar



Loosen the a collar also remove a hose from the back party of an average pipe of system of cooling (fig. 7–10).
Unscrew a bolt of 1 fastening of an average pipe of system of cooling to the block of cylinders.
Take out an average pipe of system of cooling from an aperture of the block of cylinders and remove it.

Installation
Installation is spent to sequences, return to removal, taking into account the following.
Before installation clear a nest for a sealing ring.
At installation it is necessary to use a new sealing ring, preliminary having greased with its anticorrosive means G12.
Move a pipe into an aperture of the block of cylinders and fix its bolt.
Establish an inlet collector.
Fill in cooling liquid.

The right average pipe of system of cooling of the petrol engine of 2,8 l
Removal
Merge cooling liquid.
Remove an inlet collector.

Fig. 7–11. The right average pipe of system of cooling of the petrol engine of 2,8 l: 1, 2 – collars; 3 – a bolt, 10 Нм



Loosen the collars also remove hoses from an average pipe of system of cooling (fig. 7–11).
Unscrew a bolt of 3 fastenings of a pipe of system of cooling to the block of cylinders.
Loosen the collars also remove from an average pipe the hoses going to the heat exchanger.
Loosen the a collar also remove from an average pipe a hose going to a broad tank.

Fig. 7–12. An arrangement of an electric socket of the gauge of temperature of a cooling liquid of the petrol engine of 2,8 l.



Disconnect an electric socket from the gauge of temperature of a cooling liquid (fig. 7–12).
Release clips of an average pipe of system of cooling and move them aside.

Fig. 7–13. An arrangement of bolts of fastening of flanges of an average pipe of system of cooling of the petrol engine of 2,8 l



Unscrew bolts (fig. 7–13 see) fastenings of flanges of an average pipe, take out an average pipe of system of cooling from an aperture of the block of cylinders and remove it.

Fig. 7–14. Elements of system of cooling of petrol engines of 3,7 and 4,2 l: 1 – back section of a pipe of system of cooling; 2 – from heating system, with the final valve; 3 – to heating system, with the final valve; 4 – a returnable hose; 5 – a cover of a broad tank; 6 – a broad tank; 7 – a filling hose; 8 – the thermostat; 9 – a radiator; 10 – an arm for hoses of a cooling liquid; 11 pipe of a cooling liquid; 12 – the oil heat exchanger; 13 – a pipe of a cooling liquid; 14 – a pipe of a cooling liquid of the oil heat exchanger




Installation
Installation is spent to sequences, return to removal, taking into account the following.
Before installation clear a nest for a sealing ring.
At installation it is necessary to use a new sealing ring, preliminary having greased with its anticorrosive means G12.
Move a pipe into an aperture of the block of cylinders and fix its bolt.
Establish an inlet collector.
Fill in cooling liquid.


13.4. The water pump of petrol engines of 2,8 l

13.6. The water pump of petrol engines of 3,7 and 4,2 l