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
      3.1.1. Technical characteristics
      3.1.2. Check of a compression
      3.1.3. Top Dead Point (TDP) of the N1 piston
      3.1.4. Camshaft cover
      3.1.5. Pulley of a bent shaft
      3.1.6. Covers of a gas-distributing belt
      3.1.7. Gas-distributing belt
      3.1.8. Natyazhitel of a gas-distributing belt and asterisk
      3.1.9. Camshaft epiploon
      3.1.10. Casing of the camshaft and camshaft
      3.1.11. Pushers and hydraulic elevators
      3.1.12. Head of cylinders
      3.1.13. Oil pallet
      3.1.14. Oil pump
      3.1.15. Flywheel
      3.1.16. Epiploons of a bent shaft
      3.1.17. Fastenings of the engine and transmission
   + 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
+ 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

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3.1.3. Top Dead Point (TDP) of the N1 piston


The highest point which is reached by the N1 piston at the time of a compression step is accepted to the top dead point.

The N1 piston is located in a forward part of the engine from a gas-distributing belt.

1. Disconnect a wire of the minus plug of the accumulator and, if necessary, unscrew spark plugs.
2. Remove an external cover of a gas-distributing belt.
3. Turn a bent shaft so that the synchronizing tag (1) of an asterisk of the camshaft was combined with a cut in a back cover of a gas-distributing belt, and the tag (2) asterisks of a bent shaft was combined with a cut in a casing of the oil pump.
4. When tags are combined, the N1 piston is in VMT at the time of a compression step.