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4.1.10.2. Installation of pistons and rods

Honningovaniye of cylinders

Ideally lines of a honingovaniye have to be crossed at an angle 50–60 °.

PERFORMANCE ORDER
1. At installation of new pistons or piston rings it is necessary to otkhoningovat walls of cylinders.
2. The greatest distribution was gained by the honingovalny tool with the sprung whetstones. The honingovalny tool in the form of a round wire brush is also widely used. Besides, carrying out a honingovaniye will require a kerosene quantity, rags and an electric sverlilka. Process of a honingovaniye consists in the following:
      – fix the honingovalny tool on an electric sverlilka and insert it into the cylinder;
      – grease with a thin layer of kerosene of a wall of the cylinder, include an electric sverlilka and move the honingovalny tool up and down to that time while on walls the correct crossed drawing is not formed. Ideally lines have to be crossed at an angle 60 °. You watch that in the course of a honingovaniye of a wall were moistened with a thin layer of kerosene;
      – do not take the honingovalny tool from the block of cylinders at the included electric sverlilka. Moreover, make several courses of the honingovalny tool at the switched-off sverlilka and only after that take it from the block of cylinders.
3. Similarly to an otkhoninguyta other cylinders.
4. Carefully wash out the block of cylinders from the remains of the abrasive tool.
5. Dry up the block of cylinders and grease surfaces with a thin butter layer.
6. Grease channels of cylinders and a neck of a bent shaft with a thin butter layer.
7. Before installation of new piston rings check a gap in the ring lock.
8. Arrange pistons and piston rings according to cylinders in which they will work.
9. Install the top sealing ring in the first cylinder and the bottom of the piston push it in the cylinder to the cylinder basis.
10. Using the probe, measure a gap in the ring lock.
11. Repeat process of measurement with the ring established in the top part of the cylinder, and compare results of measurement to specifications.
12. If a gap too small, it it is necessary to increase, soshlifovyvy ring end faces.
13. If a gap in the lock of a piston ring too big, check correctness of compliance of rings to your engine.
14. Repeat operation of check for each ring in the first cylinder and then for rings in other cylinders.
15. Arrange locks of piston rings on the piston so that the corner between them made 180 °. In an oil scraper ring displace locks of the top and lower part of an oil scraper ring on 25–50 mm from the lock of the central part of an oil scraper ring to the right and to the left.
16. Install the piston with a rod in the first cylinder, at the same time correctly orient the piston.
17. Grease the piston and piston rings with pure engine oil, then using special adaptation, squeeze piston rings on the piston.
18. Using wooden whetstone or the handle of the hammer, press on the piston and press it into the cylinder.
19. Check combination of the lower head of a rod with a neck of a bent shaft. If necessary tighten the piston a rod and establish the lower head of a rod with an insert on a neck of a bent shaft.
20. Establish a rod cover with an insert (the drawing at the left) and fix it by bolts, having tightened them the required moment (the drawing on the right).
21. Similarly install other three pistons with rods.
22. Establish a head of the block of cylinders, the oil pump and the oil pallet.