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
      3.2.1. Technical characteristics
      3.2.2. Check of a compression
      3.2.3. Top Dead Point (TDP) of the N1 piston
      3.2.4. Cover of camshafts
      3.2.5. Pulley of a bent shaft
      3.2.6. Covers of a gas-distributing belt
      3.2.7. Gas-distributing belt
      3.2.8. Natyazhitel of a belt, asterisks and intermediate pulleys
      3.2.9. Epiploons of camshafts
      3.2.10. Camshafts and pushers
      3.2.11. Head of cylinders
      3.2.12. Oil pallet
      3.2.13. Oil pump
      3.2.14. System of an equilibration of a bent shaft (engines since 1998)
      3.2.15. Flywheel
      3.2.16. Epiploons of a bent shaft
      3.2.17. Fastenings of the engine and transmission
   + 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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3.2.3. 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 synchronizing tags (1) of asterisks of camshafts were directed up and combined with cuts in a cover of a gas-distributing belt, and the tag (2) on a pulley of a bent shaft was combined with the index. When tags are combined, the N1 piston is B BMT at the time of a compression step.