Cleaning
Attention! The plugs of the channels of the cooling system are tightly pressed into the cylinder block.
1. Turn the plugs by blows on the blunt part of the core (photo on the left) and take it out with pliers (photo on the right).
2. Carefully clean the block of seal residue.
3. Remove the main bearing caps and remove the bearings from the cylinder block and caps. Label all parts and store them so that they are not mixed up.
4. Clean all channels with steam jet and compressed air (it is recommended to perform in a car service), wash the outside of the unit with detergent.
5. Drive all threaded holes, clean and blow with compressed air.
6. Dry the block and lubricate the machined surfaces with low viscosity oil. To clean, unscrew the plugs of the oil channels.
7. Establish covers of radical bearings, tighten bolts by hand.
8. Press in new plugs without distortions, having previously lubricated them with Permatex N2 sealant.
9. Wrap the plugs of the oil channels on the same sealant.
Status check
1. When external defects are found (cracks and chips), repair or replace the unit. It is recommended to check for internal defects in the cylinder block, for which it is necessary to hand over the block to a car service workshop.
2. Check the surface condition, ovality and taper of the cylinders by measuring the diameter in three planes, the cylinder under the shoulder, in the center and at the lowest part, in the directions parallel and perpendicular to the axis of the block.
3. Take measurements with a telescopic caliper.
4. If the results differ from the standard, then the unit should be handed over for repair. After restoring the block, pistons and rings of repair sizes will be needed.
5. If the condition of the cylinders is acceptable, the wear of the cylinder and the clearance between the cylinder and the piston do not exceed the established norms, then the cylinders need to be honed (see subsection 3.3.11).
6. Check the deformation of the split plane of the cylinder block. If the deviation from the plane exceeds the norm, then the block should be polished in a car service.