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
 










13-18-radiator.html

13.18. A radiator

Removal
Preventions
The merged cooling liquid is necessary for collecting and utilising.
At opening of a cover of a broad tank on the hot engine it is necessary to be careful, as leaving steams can lead to strong burns. For this purpose close a cover of a broad tank a thick layer of a fabric and slowly unscrew a cover before occurrence of a hissing sound. After the hissing termination slowly unscrew and uncover a broad tank.

Establish under the engine reception pallet VAG 1306 for gathering of a cooling liquid.
Open a cover of a broad tank.
Remove a forward bumper.

Fig. 3.1–1. An arrangement of clamps of fastening of the bottom mudguard of a motor compartment



Release clamps and remove the bottom mudguard of a motor compartment (fig. 3.1–1 see).

Fig. 7–5. An arrangement of a stopper of a drain aperture of a radiator



Unscrew a carving stopper from a radiator (fig. 7–5 see) and merge cooling liquid. That the cooling liquid did not spill, instead of a carving stopper insert a hose.

Fig. 7–31. An arrangement of an electric socket (1) temperature-sensitive elements of inclusion of the fan and a collar (2) fastenings of a hose of system of cooling



Loosen the a collar 2 (fig. 7–31), remove a hose and merge cooling liquid.
In the left bottom part of a radiator disconnect an electric socket of 1 temperature-sensitive element of inclusion of the fan.

Fig. 3.1–10. An arrangement of an air branch pipe (1) and an air inlet (2) about a forward cross-beam of the engine



Separate an air inlet 2 (fig. 3.1–10) from a forward cross-beam see and remove it together with an air branch pipe 1.

Fig. 7–32. An arrangement of nuts of the top fastening to a forward cross-beam and a collar of fastening of a hose to a radiator



Loosen the a collar (fig. 7–32) also remove the top hose from a radiator.
Unscrew two nuts of the top fastening to a forward cross-beam (fig. 7–32 see).
Remove from headlights decorative overlays.

Fig. 7–33. An arrangement of screws of fastening (2, 5) arms of decorative overlays of headlights and nuts (1, 3, 4, 6) radiator fastenings



Unscrew screws 2 and 5 (fig. 7–33)  fastenings of arms of decorative overlays of headlights
Unscrew four nuts of fastening 1, 3, 4 and 6 radiators.

Fig. 7–34. An arrangement of an electric socket



Disconnect an electric socket behind the left headlight (fig. 7–34)

Fig. 7–35. An arrangement of bolts (1, 2) heat exchanger fastenings



Unscrew bolts 1 and 2 (fig. 7–35) heat exchanger fastenings.
Unscrew a tube of system of cooling of system of the amplifier of a steering and, without disconnecting, move it aside.
Unscrew two nuts in the bottom part of the radiator, shown by arrows on fig. 7–35.
Remove the heat exchanger from an arm and move it aside.
Reject a radiator and take it upwards from a motor compartment.

Check
If the radiator acted in film in connection with throughput reduction, wash out its stream of water in two directions and blow outside compressed air.
If the radiator proceeds, do not try to make or solder a leaking place as plastic details of a radiator will be thus damaged.
The insignificant leak of a radiator can be eliminated by means of hermetic.
Check up a condition of the bottom rubber support of a radiator and if necessary replace them.

Installation
Installation is spent to sequences, return to removal.
Establish a forward bumper.
Fill in cooling liquid.


13.17. The left average pipe of system of cooling of the diesel engine of 3,3 l

14. Coupling