| 1. Carefully examine a head of the block of cylinders on existence of cracks and other damages. In the presence of cracks the head is subject to replacement. |
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2. Using a metal ruler and the probe, check planeness of the interfaced surface of a head of the block of cylinders. If not planeness exceeds admissible limits, it is necessary to pereshlifovat a head, at the same time its height has to correspond to the required values. |
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3. Check a condition of saddles of valves. If they are burned, worn-out or have defects, they need to be replaced. If wear of a saddle of the valve is insignificant, they need to be ground in. Check the directing plugs of valves for wear, inserting into them a core of the valve and moving it aside. Movement has to be insignificant. If movement is excessive, take the valve and measure diameter of a core of the valve. If necessary replace the valve. If the core of the valve is not worn-out, so the directing plug which needs to be replaced is worn-out. Replacement of the directing plugs of valves should be made at service station. |
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4. If saddles of valves have to be pereshlifovana, this operation needs to be executed after installation of new guides of valves. |
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