Opel Omega

since 1993-1999 release

Repair and operation of the car

Opel Omega
+ 1. Maintenance instruction
+ 2. Maintenance
- 3. Repair of engines
   + 3.1. SOHC engines of 2,0 liters
   + 3.2. DOHC engines of 2,0 liters
   + 3.3. 2,5 and 3,0 liters engines
   + 3.4. Partition of all petrol engines
   + 3.5. 2,0 liters diesel engine
   - 3.6. 2,5 liters diesel six-cylinder engine
      3.6.1. Removal and installation of the engine
      3.6.2. Head of cylinders
      3.6.3. Cam-shaft
      3.6.4. Check of a compression
      3.6.5. Multiridge maple belt
      3.6.6. Pallet of a case and laying
      - 3.6.7. Cooling system of the diesel engine 2,5 liters Thermostat Radiator The fan with the viscous coupling / the fan coupling Cooling pump Pipe of the airsupercharger
+ 4. Heating system and ventilation
+ 5. Fuel, exhaust systems
+ 6. System of start of the engine
+ 7. System of ignition
+ 8. Coupling
+ 9. Transmissions
+ 10. Main transfer, half shafts
+ 11. Brake system
+ 12. Suspension bracket and steering
+ 13. Body
+ 14. Body electric equipment


3.6.7. Cooling system of the diesel engine 2,5 liters Thermostat


Arrangement of elements of the cooling system

1. Cover
2. Compensation tank
3. Gate of system of a heater
4. Heater heat exchanger
5. Returnable pipeline
cooling liquid
6. The giving pipeline
cooling liquid
7. Block of cylinders
8. The giving pipeline of cooling liquid of a radiator
9. Water pump
10. Additional pump
11. Radiator
12. Returnable pipeline of cooling liquid of a radiator
13. Head of cylinders
14. Hose of removal of air



The car without conditioner
1. Merge cooling liquid in a vessel.


It is not required to merge cooling liquid completely. There is enough that the level of liquid was below the thermostat case.

2. Unscrew the top casing of the engine and a pipe for air forcing.
The car with the conditioner
3. Unscrew the fan with the viscous coupling.
4. Unscrew a pipe (1) of a heater on the camshaft drive case.
5. Unscrew and remove the case with the thermostat.
6. Remove consolidation from the thermostat case.


1. Clear the surface adjoining to consolidation.
2. Replace the thermostat together with the case.
3. Install new consolidation in the thermostat case, install the thermostat in the case. At the same time the gate (2) for production of air has to get to a guide (1).
4. Screw the thermostat case with 10 N.' effort of m.
5. Screw a heater pipe on the camshaft drive case.
6. Establish a pipe for forcing of air and an engine casing.
7. Check antifrizny properties of cooling liquid, add cooling liquid and pump over the cooling system.