Cylinder head (Opel Omega B)

Cylinder Head Bolt Tightening Sequence

Removal

1. Disconnect the negative battery cable.

2. Drain the coolant, remove the spark plugs and remove the auxiliary drive belt.



3. Remove the timing belt. Before removing the belt, turn the crankshaft approximately 60° back. This reduces the likelihood of the valves touching the pistons.

4. Remove the intake and exhaust manifolds.

5. Remove the camshaft cover.

6. Remove the camshaft sprocket.

7. Remove the bolts securing the rear timing belt cover to the camshaft housing.

8. Disconnect the wires from the DIS module, coolant temperature sensor and crankshaft sensor. Remove the bolts securing the ground wires to the front of the cylinder head.



9. Disconnect the coolant hoses from the cylinder head. Disconnect the wires from the sensor on the left side of the thermostat housing.

10. Make sure all hoses and wires that interfere with the removal of the cylinder head are disconnected.

11. Unscrew the head bolts in the reverse tightening sequence (see figure Cylinder Head Bolt Tightening Sequence).

12. Remove the camshaft housing from the cylinder head.

13. Remove the cylinder head and head gasket.

Preparing for installation

1. Thoroughly clean the mating surfaces of the head and cylinder block. Clean the water and oil passages in the head. Clean the piston heads from carbon deposits.

2. Inspect the mating surfaces for deep scratches, dents, and other damage. Small scratches can be sanded down with sandpaper, but severe damage should be machined.

[Text copied from this portal www.OpelBook.ru]

3. Check that the surface on which the gasket is installed is not deformed.

4. Clean the threads of the cylinder head bolts.

5. Prepare new bolts.

Installation

1. Install the head gasket onto the dowel pins (indicated by arrows).



2. Make sure the mark on the gasket is facing up.



3. Install the head.



4. Apply sealant N15 03 170 to the mating surfaces of the head and camshaft housing.

5. Lubricate the tappets with oil.

6. Install the camshaft housing.

7. Install new cylinder head bolts.



8. Tighten the head bolts in the specified sequence (see figure Cylinder Head Bolt Tightening Sequence) in accordance with the data given in subsection 3.1.1.

9. Install the remaining parts.

10. Connect the battery, start the car and check the engine operation.