Opel Omega

since 1993-1999 of release

Repair and car operation

Opel Omega
+ 1. Maintenance instruction
+ 2. Maintenance
- 3. Repair of engines
   - 3.1. SOHC engines in volume 2,0 liters
      3.1.1. Technical characteristics
      3.1.2. Compression check
      3.1.3. Top dead point (VMT) of the N1 piston
      3.1.4. Camshaft cover
      3.1.5. Pulley of a cranked 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 a camshaft and camshaft
      3.1.11. Pushers and hydraulic lifts
      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 cranked shaft
      3.1.17. Engine and transmission fastenings
   + 3.2. DOHC engines in volume 2,0 liters
   + 3.3. Engines in volume 2,5 and 3,0 liters
   + 3.4. Partition of all petrol engines
   + 3.5. Diesel engine in volume 2,0 liters
   + 3.6. Diesel six-cylinder 2,5-liter engine
+ 4. Heating system and ventilation
+ 5. Fuel, exhaust systems
+ 6. System of start of the engine
+ 7. Ignition system
+ 8. Coupling
+ 9. Transmissions
+ 10. Main transfer, semi-axes
+ 11. Brake system
+ 12. Suspension bracket and steering
+ 13. Body
+ 14. Body electric equipment

3.1.12. Head of cylinders


Sequence of a 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 remove an additional driving belt.
3. Remove a gas-distributing belt. Before removing a belt, turn a cranked shaft approximately on 60°назад. The probability of contact of valves with pistons thereby decreases.
4. Remove inlet and final collectors.
5. Uncover a camshaft.
6. Remove a camshaft asterisk.
7. Unscrew the bolts, fixing a back cover of a gas-distributing belt to a camshaft casing.
8. Disconnect wires from the DIS module, the sensor of temperature of cooling liquid and the sensor of a cranked shaft. Unscrew the bolts, fixing wires of grounding to a forward part of a head of cylinders.
9. Disconnect hoses of cooling liquid from a head of cylinders. Disconnect wires from the sensor on the left side of a casing of the thermostat.
10. Check, that all hoses and the wires disturbing to removal of a head of cylinders, were disconnected.
11. Unscrew head bolts in sequence of return sequence of a tightening (see fig. Sequence of a tightening of bolts of a head of the block of cylinders).
12. Remove a camshaft casing from a head of cylinders.
13. Remove a head of cylinders and head laying.

Preparation for installation

1. Carefully clean being 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 being joined surfaces on existence of deep scratches, dents and other damages. Small scratches can be smoothed out an emery paper, strong damages are necessary for processing 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. Establish head laying on adjusting pins (are specified by shooters).
2. Check, that the label on laying was turned up.
3. Establish a head.
4. Put hermetic N15 03 170 on being joined surfaces of a head and a camshaft casing.
5. Oil pushers.
6. Establish a camshaft casing.
7. Insert new bolts of a head of cylinders.
8. Tighten head bolts in the specified sequence (see fig. Sequence of a tightening of bolts of a head of the block of cylinders) according to the data provided in subsection 3.1.1.
9. Establish the remained details.
10. Connect the accumulator, get the car and check operation of the engine.