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

3.2.11. Head of cylinders


Sequence of tightening of bolts of a head of the block of cylinders


1. Disconnect a wire of the minus plug of the accumulator.
2. Merge cooling liquid, unscrew spark plugs and take off an additional driving belt.
3. Remove inlet and final collectors.
4. Take off a gas-distributing belt. Before taking off a belt, turn a bent shaft approximately on 60 ° back. Thereby the probability of contact of valves with pistons decreases.
5. Remove camshafts.
6. Unscrew the bolts fixing a back cover of a gas-distributing belt to a head of cylinders.
7. Disconnect all hoses from a head of cylinders.
8. Unscrew a ventilating tube from the block of cylinders.
9. Check that all hoses and wires preventing removal of a head of cylinders were disconnected.
10. Unscrew head bolts in the sequence of the return sequence of tightening (see rice. Sequence of tightening of bolts of a head of the block of cylinders).
11. Remove a head of cylinders.
12. Remove laying of a head.

Preparation for installation

1. Carefully clean the joined surfaces of a head and the block of cylinders. Clean water and oil channels in a head. Clean heads of pistons from a deposit.
2. Examine the joined surfaces on existence of deep scratches, dents and other damages. Small scratches can be smoothed out an emery paper, strong damages need to be processed on the machine.
3. Check whether the surface on which laying is established is deformed.
4. Clean carvings of bolts in a head of cylinders.
5. Prepare new bolts.


1. Check that the bent shaft was still turned approximately on 60 ° back.
2. Establish laying of a head on adjusting pins (are specified by shooters).
3. Check that the tag on laying was turned up.
4. Establish a head.
5. Insert new bolts of a head of cylinders.
6. Tighten head bolts in the specified sequence (see rice. Sequence of tightening of bolts of a head of the block of cylinders).
7. Establish the remained details.
8. Connect the accumulator, start the car and check operation of the engine.