| 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. |
|
|
2. Using a metal ruler and щуп, check planeness of an interfaced surface of a head of the block of cylinders. If not planeness exceeds admissible limits, it is necessary перешлифовать a head, thus its height should correspond to demanded values. |
|
|
3. Check a condition of saddles of valves. If they are burned, worn-out or have defects, it is necessary to replace them. If wear of a saddle of the valve is insignificant, they are necessary for grinding in. Check directing plugs of valves on wear, inserting into them a core of the valve and moving it aside. Moving should be insignificant. If moving 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, means, the directing plug which it is necessary to replace is worn-out. Replacement of directing plugs of valves should be made at service station. |
|
4. If saddles of valves have to be перешлифованы, this operation is necessary for executing after installation of new directing valves. |
|