CASE ASSEMBLY FOR A GAS TURBINE ENGINE AND CORRESPONDING METHOD OF REWORKING SUCH A CASE

摘要

A case assembly (36) for a gas turbine engine (20), includes a case with an oversized case boss (138), said oversized case boss (138) including a peripheral wall (146) that defines a first inner diameter (148) in a first condition to receive a piston seal (132), and a second inner diameter in a second condition, the second condition including enlargement of the first inner diameter (148) to form a second inner diameter and a bushing (150) mounted within the second inner diameter, an inner diameter of the bushing defines a bushing inner diameter (152) about equivalent to the first inner diameter (148) to receive the piston seal (132). A corresponding method of reworking a case of a gas turbine engine is also provided.