The check by the second method is based on comparing the inclination of the axis of the holes for the piston finger and the tilt of the axis of the piston to the lower end of the piston. With the indicated method of verification, first of all, determine the value and direction of the inclination of the axis of the piston to its lower end.
Having installed the piston 3 with the lower end on the pale plate 1, it is determined on the basis of the indication of the frame level 2 of the value and the direction of inclination of the axis of the piston per 1 m length. In this case, the frame level 2 is applied alternately on both sides of the piston to its forming in the plane passing through the axis of the holes for the piston finger, and the arithmetic mean of both indications is taken. According to the level of the level on the pile plate, the value is determined by millimeters per 1 m of the length and the direction of inclination of the plate in the direction of the axis of the holes for the piston finger.
Having given the obtained values of the inclination of the axis of the piston and the upper surface of the plate to 100 mm of the length and subtracting one value from the other with the same direction of inclination or the summation of these values with various directions of the inclination, the size of the axis of the piston is obtained to its lower end per 100 mm length.
After this, the same position of the piston 3 on the calibration plate 4 into the holes for the piston finger, the control roller 2 is inserted, with the smooth roller the diameter should be the same along the entire length, and in the stepped roller all the surfaces are strictly carved, and the protruding ends should have the same diameter. By installing a control roller in the holes, indications a mm and ah mm indicator 1 at both ends are noted.
Then, having received the size of the axis of the axis of the holes for the piston finger to the lower end of the piston and the axis of the piston to the lower end of the piston and subtracting one magnitude from the other with the same direction of the inclination or summation at various directions of the inclination, the value of the non -perpendicularity of the axis of the piston to the piston axis is obtained.
