2. On 2.0L engines, remove the cylinder head and the lower section of the oil pan. Unscrew the bolts of the upper section of the oil pan, unscrew the bolts securing the oil receiver to the balance mechanism (or the frame of the main bearing caps). Move the upper section of the pan to the front of the engine, unscrew the remaining mounting bolts and remove the oil receiver. Unscrew the bolts and remove the oil deflector. Evenly and gradually unscrew the mounting bolts of the balance mechanism (or the frame of the main bearing caps) and remove these nodes.
3. Check for a rim on the top of the cylinders. The rim should be removed with a reamer or scraper without damaging the cylinder wall. The formation of a rim indicates increased wear of the cylinder.
4. Using feeler gauges, check the axial play in the connecting rods (see photo). If the clearance exceeds the norm, replace the connecting rods.
5. Apply paint or punch (see photo)on the ground surface of the connecting rod and cover is the cylinder number (if the engine was disassembled, then you should find these marks). Cylinder #1 is located on the camshaft belt side.
5. Set pistons of cylinders 1 and 4 to the BDC position.
(Text copied from this portal: www.OPELBOOK.ru)
6. Unscrew the connecting rod cap bolts of the connecting rod of the 1st cylinder. Remove the cap and take out the lower connecting rod bearing. If the bearing is to be installed again, then glue it with adhesive tape to the removed cap.
Attention! On some engines, the split surfaces of the connecting rod caps and connecting rods are not ground, since the cap is processed together with the connecting rod both on the plane and under the diameter of the bearings, and then broken off. On these engines, measures should be taken to ensure that these surfaces are not affected during disassembly and assembly. Otherwise, premature wear of the connecting rod occurs.
7. Tape the connecting rod cap bolt threads. Use a hammer handle to push the piston into the cylinder and pull the piston out through the top of the cylinder block. Remove the upper connecting rod bearing and tape it to the removed connecting rod.
8. Place the cover on the connecting rod and secure it with nuts, without disturbing the previous order of assembly of the parts.
9. Repeat the above operations and remove the connecting rod with the piston of the 4th cylinder.
10. Similarly, remove the connecting rods with pistons from the 2nd and 3rd cylinders.
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