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MOSKVICH-412

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REPAIR valve gear. Check the status of valve springs

Each time you run razborochno-assembly operations check valve mechanism on the elasticity of the valve springs special scales (Fig. 41). Moskvich-412 When testing the springs on the scale is determined by the effort that should be for the new details: - For the big spring at a length of 27.5 mm (44 + -3.3) kg and length of 36.5 mm (17.6 + -1.3) kg; - For a small spring at a length of 25.5 mm (26.6 ± 2) kg and at length 34.5 mm (11 + -0.8) kg. If verification is established that the force given by spring differs from the above quantities by more than 10%, the spring must be replaced. It should be borne in mind that the force generated by spring reduced if the chamfer and bevel seat valve have been grinding, since the metal removal with beveled the end of the valve stem is separated from the reference plane a spring and a preload valve is reduced. Therefore, when assembling parts of the valve mechanism on the head cylinders under the support plate springs must enclose additional washers. The thickness of the washers should be chosen so that with the valve closed length of a large spring was 36.5 mm.
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