Cylinder block (Opel Omega B)

Cleaning

1. Disconnect all external parts and sensors from the unit.

2. Clean off all traces of sealant.



3. Unscrew or drill out the oil channel plugs. Cut an M10 thread in the bypass valve.



4. Screw the bolt into the valve.



5. Unscrew and remove the bypass valve located behind the oil filter.





6. Clean and flush the oil holes and oil passages with warm water and dry them by blowing them with compressed air.

7. Clean the threads of the cylinder block holes using taps of the appropriate size.

8. Lubricate the block with oil and screw in new plugs, lubricating the plug threads with sealant.

Examination

1. Inspect the block for cracks and traces of corrosion or rust. Inspect the threads of the block holes. If defects are found, the block must be repaired or replaced if possible.

2. Inspect the cylinders.

3. Measure the diameter of each cylinder at the top, middle and bottom, parallel to the crankshaft axis.

4. Measure the diameter of each cylinder at the top, middle and bottom, perpendicular to the crankshaft axis.

5. The taper of a cylinder is calculated as the difference between the upper and lower diameters. The ovality is the difference between parallel and perpendicular measurements.

6. If the results obtained do not match the technical requirements, please contact a specialist.



7. After completing the work, insert the new bypass valve into the cylinder block.





8. Hammer the valve into place.