Method for tight control of bolt holes in fan assembly

摘要

A fan case (10) has an annular outer wall (12) with a plurality of fan case bolt holes (32) there through. Bushings (38) are inserted into the fan case bolt holes (32) and are dimensioned to define an annular gap (52) between the bolt hole inner surface (50) and the bushing outer surface (48). An adhesive material (54) is disposed within each annular gap (52) between the bushing (38) and the corresponding fan case bolt hole (32), with the adhesive material forming a liquid shim (54) separating the bushing outer surface (48) from the bolt hole inner surface (50).