Peugeot 405

1987-1997 of release

Repair and operation of the car

Peugeot 405
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
+ 4. Fuel system
- 5. Lubrication systems, coolings
   + 5.1. Lubrication system
   - 5.2. Cooling system
      5.2.1. Cooling system hoses
      5.2.2. Radiator
      5.2.3. Thermostat
      5.2.4. Fan of cooling of a radiator
      5.2.5. Cooling system pump
      5.2.6. Discharge of cooling liquid
      5.2.7. Filling of cooling liquid and removal of air from system
+ 6. System of release
+ 7. Coupling
+ 8. Transmissions
+ 9. Power shafts
+ 10. Steering
+ 11. Suspension brackets
+ 12. Brake system
+ 13. Body
+ 14. Electric equipment


5.2.3. Thermostat


Bolts of fastening of a cover of the thermostat, engine of 1,4 l

Bolts of fastening are specified by shooters.

Bolts of fastening of a cover of the thermostat, engine of 2,0 l

The bolt of fastening is specified by an arrow.


1. To remove a weight wire from the accumulator.
2. To merge the cooling system.
3. On some models to remove the air filter.
4. To weaken collars and to remove hoses from the thermostat.
5. To unscrew bolts and to uncover the thermostat.
6. To take the thermostat together with round laying.


1. To place completely (having suspended on a thread) the thermostat in a vessel with water.
2. To heat water, at constant measurement of temperature. At achievement of the water temperature equal to temperature of the beginning of opening of the thermostat the valve of the thermostat has to begin to open and to open completely at achievement of temperature of full opening of the thermostat.
3. Temperatures of opening of the thermostat are specified in subsection 3.1.1, subsection 3.2.1, subsection 3.3.1.


Installation is made in the sequence, the return to removal.

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