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MOSKVICH-412

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REPAIR valve gear. Fitting of valves to the saddles

To better fit the surface of the working bevel to the surface of the valve seat chamfer nan must be made grinding of these surfaces to each other using the tool. Well-lapped each other facets increase the compression in the cylinders of the engine and significantly increase the service life of exhaust valves. Lap the valves in the following order: - Put the rod lapped valve spring; - Apply a bevel head valve lapping thin layer of paste, is prepared in a mixture of emery powder oil to the engine; - Insert the valve spring by pressure in the guide sleeve; - Rotate the valve with the valve lapping prispoosobleniya (Fig. 38) in both directions. At the same time to time valve slightly pressed onto the seat. Moskvich-412 Lap valves carefully without removing workers from the facets valve seat is too much metal as it reduces the number of repair of the valve seat and thereby reduces the overall the duration of their service. By the end of grinding down the contents of grinding the powder in the lapping paste, and the moment when the surface will be completely smooth and even take xagrayish color, grinding produce just one pure oil. Outward sign of lapping is to obtain a satisfactory odnotonnogog matte-gray color (no black spots) on the job surfaces of the head glapana and his saddle.
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