Audi 100

1982-1990 of release

Repair and car operation




Audi 100
+ 1.1. Controls and devices
+ 2. Technical characteristics
+ 3. Engines
- 4. Cooling system
   4.1. Replacement of a cooling liquid
   4.2. Replacement and thermostat check
   4.3. Removal and installation of the water pump
   4.4. Check and replacement of the gauge of inclusion of the electrofan
   4.5. Replacement of the gauge of temperature of a cooling liquid
   4.6. Removal and installation of a radiator of system of cooling
+ 5. An exhaust system
+ 6. The power supply system
+ 7. Transmission
+ 8. A running gear
+ 9. A steering
+ 10. Brake system
+ 11. A body
+ 12. An electric equipment



4. Cooling system
THE GENERAL DATA

System of cooling of the four-cylinder engine


1 – the heat exchanger of cooling of oil of automatic transmission;
2 – a collar;
3 – a hose bringing a radiator;
4 – a sealing ring of a cover
The thermostat;
5 – a thermostat cover;
6 – the thermostat;
7 – the case of the water pump;
8 – a lining;
9 – a cover of the water pump;
10 – the platen of the water pump;
11 – a pulley of the water pump;
12 – a fan casing;
13 – a radiator casing;
14 – an arm;
15 – the rubber plug;
16 – the gauge of inclusion of the fan;
17 – a sealing ring of the gauge;
18 – the electrofan;
19 – a hose taking away a radiator;
20 – a radiator;
21 – the top rubber plug;

22 – the top casing of a radiator;
23 – пароотводящий a hose;
24 – a stopper
Broad tank;
25 – a broad tank;
26 – a hose from a tank to a radiator;
27 – a sealing ring of the water pump;
28 – a thermoswitch automatic заслонки;
29 – a branch pipe of a shirt of cooling;
30 – the gauge of temperature of a cooling liquid;
31 – the gauge of inclusion of the fan;
32 – a lining;
33 – a branch pipe of selection of a liquid in a heater;
34 – a tube plum of a liquid from a heater;
35 – a hose taking away the heat exchanger;
36 – a hose bringing the heat exchanger


System of cooling of the five-cylinder engine

1 – a fan casing;
2 – the electrofan;
3 – a broad tank;
4 – a tank stopper;
5 – a collar;
6 – a hose from a tank to a radiator;
7 – a radiator;
8 – the bottom casing of a radiator;
9 – the top casing of a radiator;
10 – пароотводящий a hose;
11 – the water pump;
12 – a sealing ring;
13 – a hose taking away a radiator;
14 – a branch pipe;
15 – a lining;
16 – a thermostat cover;
17 – the thermostat;
18 – a sealing ring of the thermostat;
19 – the gauge of inclusion of the electrofan;
20 – a hose bringing the thermostat;
21 – a tube of a supply of a liquid to a heater;
22 – a hose bringing a heater;
23 – a hose taking away a heater

The cooling system completely tight, consists of a radiator, the water pump, the thermostat, the broad tank, hoses connecting them and the electrofan. The radiator is established in front of the engine on cars with four-cylinder engines or sideways. With the five-cylinder. The system works as follows. While the engine cold, the thermostat is closed also a liquid circulates on a small circle, passing a radiator. When the liquid temperature reaches approximately 87 With, the thermostat starts to open, and a liquid. To circulate on the big circle through a radiator. The electrofan copes the gauge of deenergizing of the fan, located in the bottom part of a radiator. The fan joins at temperature of a cooling liquid 93–98 With, and is switched off at 88–93 With.

Capacity of system of cooling (with a heater) makes:

Four-cylinder engines
7,0 l
Five-cylinder petrol engines, except МС
8,1 l
Engines MS
8,5 l
Diesel engines without pressurisation
8,0 l
Diesel engines with pressurisation
9,4 l

To change cooling liquid it is recommended approximately in 2 years, and also at replacement of a radiator, the engine, a head of the block of cylinders, etc.

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