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When the bolt is excessively tightened, 3 、Check Cylinder cover (1) Check the flatness of the bottom of cylinder cover with straightedge and plug gauge. (2) When the distortion exceeds the limit value, modification by abrasion is needed. ~120.1mm valve (1) Check whether the working surfaces of valve are contacted properly. If the contact is (2) If the edge thickness exceeds the usage limit value, the valve should be replaced. (3) Measure the total height of valves. If it is smaller than the limit value, the valve should be exhaust…………113.61mm Valve spring (1) Check the free height of the valve spring. If it is Standard value: 51.0mm (2) Check the verticality of spring central line and the outer diameter of valve rod inner diameter of valve duct contact position (in the edg included angle between spring central spring
free height valve duct |