Cleaning
1. Disconnect all external parts and sensors from the block. Unscrew the piston oil jets.
2. Remove the eye for attaching the lifters.
3. Remove the engine mount bracket.
4. Remove the coolant pump.
5. Remove the cooling fan shaft.
6. Remove the oil filter mounting cover.
7. Remove the gasket.
8. Remove the fuel pump bracket.
9. Clean off all traces of sealant.
10. Unscrew plugs of oil channels.
11. Clean and flush the oil holes and passages with warm water and dry them with compressed air.
12. Clean the threads of the bolts with taps of the required size.
13. Lubricate the block with oil and screw in new plugs.
Examination
1. Inspect the unit for cracks and signs of corrosion or rust. Inspect the threads of the block holes. If defects are found, the unit must be repaired or replaced if possible.
2. Examine the cylinders.
3. Measure the diameter of each cylinder in the upper middle and lower parts of it, parallel to the axis of the crankshaft.
4. Measure the diameter of each cylinder in the upper middle and lower parts of it, perpendicular to the axis of the crankshaft.
5. The taper of a cylinder is calculated as the difference between the top and bottom diameters. Ovality is the difference between parallel and perpendicular measurements.
6. If the results obtained do not match the technical requirements, contact the specialists.
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