The invention discloses a mounting precision control method for
stern door hinges. The mounting precision control method comprises the steps: A, preparation work before mounting is conducted; B, a ground sample datum line is scribed on the horizontal ground according to theoretical data of a drawing; C, a
stern door is hoisted to the designated position, specifically, the
stern door is hoisted onto a
pier position on one side of the datum line through a crane; D, horizontal measuring points of the stern door are selected; E, the precision of a theoretical centerline is examined, and transversecenterline positioning lines of the hinges are scribed; F, horizontal direction mounting lines of the hinges are scribed; G,
machining is conducted, and a dummy shaft and a short sleeve are mounted;H, the longitudinal direction of the dummy shaft is adjusted; I, the transverse central positions of hinge seat plates are adjusted; J, hinge seat fixing spacers are mounted; K, adjusting spacers aremeasured and prepared; L, the adjusting spacers are subjected to point
welding; M, drilling, tapping and hinge seat fixing are conducted; N, hinge seats are mounted; O, the adjusting spacers are welded; and P, the dummy shaft is dismounted, and hinge pin shafts are mounted. The mounting precision control method is suitable for mounting of the two or more sets of hinges of the stern door, a hatch cover and a gang
plank, a mounting method is simple, and the precision is high.