Scroll compressor and method for assembling a scroll compressor

A method for assembling a scroll compressor, the method comprising:

• supporting an orbiting scroll on a main frame;
• disposing a fixed scroll on the main frame to define a plurality of compression chambers together with the orbiting scroll;
• inserting at least one reference pin into the main frame and the fixed scroll;
• coupling a plurality of screws to the main frame and the fixed scroll;
• and
• separating the at least one reference pin from the main frame and the fixed scroll in a state in which the plurality of screws is coupled, wherein the fixed scroll includes:
• a head plate including a wrap and an outer peripheral surface;
• and
• at least one scroll protrusion that protrudes outward in a radial direction from the outer peripheral surface of the head plate, wherein the at least one scroll protrusion includes both a first reference pin coupling hole, into which the reference pin is inserted, and a guide hole, into which a screw of the plurality of screws is inserted, wherein the reference pin is removed from the first reference pin coupling hole after the fixed scroll and the main frame are assembled, wherein the main frame includes a main body and at least one frame protrusion that protrudes outward in a radial direction from an outer peripheral surface of the main body, and wherein the at least one frame protrusion includes a second reference pin coupling hole, into which the reference pin is inserted, and a frame guide hole, into which the screw of the plurality of screws is inserted.