Audi 100/A6

1990-1997 of release

Repair and car operation

Audi 100/A6
+ 1. The maintenance instruction
+ 2. Maintenance service
+ 3. Engines
+ 3.2. Diesel engines
+ 3.3. Removal and a partition of engines
- 4. Cooling system
   4.2. Technical characteristics
   4.3. Hoses of system of cooling
   4.4. A radiator
   4.5. The thermostat
   4.6. The cooling fan
   + 4.7. Switches and gauges of system of cooling
   4.8. The water pump
   4.9. The heat exchanger liquid oil-/cooling
   4.10. Diagnostics of malfunctions in a contour of circulation of oil
+ 5. Heating and ventilation
+ 6. Fuel system
+ 7. An exhaust system
+ 8. Systems of start, ignition
+ 9. Transmission
+ 10. Brake system
+ 11. Suspension brackets, a steering
+ 12. A body
+ 13. An electric equipment
+ 14. A good advice

9df16362 чистяков александр николаевич
9df16362 чистяков александр николаевич

4.5. The thermostat

The basic components of system of cooling of the 6-cylinder engine

1. The thermostat
2. A sealing ring
3. The thermostat case
4. A bolt, the moment of an inhaling 10 Н m.
5. A sealing lining

6. – for dismantle it is necessary to remove the pump of a cooling liquid поликлиновый and gear belts
7. A bolt, the moment of an inhaling 10 Н m.


1. Merge cooling liquid.
2. Remove the pump of the hydraulic booster of a wheel for access improvement.
3. Disconnect a water hose from a thermostat cover.

4. Turn off fixing bolts and uncover the thermostat.
5. Remove the thermostat (at the left – the 5-cylinder engine, on the right – 4-cylinder).


Check up thermostat work, having lowered it in hot water. Replace the thermostat if it is necessary.


1. Establish the thermostat and a new sealing ring into place.
2. Establish a cover of the thermostat and tighten fixing bolts.
3. Further installation is spent upside-down removals.