Patent ID: 8099962
Filing Date: 2012-01-24
Classification: F01D,F05B,F05D,Y10T

Abstract:
1. A method of assembly for a mid turbine frame of a gas turbine engine, the method comprising the steps of: a) assembling a sub-assembly including an annular bearing housing, an annular spoke casing and an annular interturbine duct, at least three spokes of the spoke casing radially outwardly extending through respective hollow struts of the annular interturbine duct and radially projecting from the annular interturbine duct; b) inserting the sub-assembly within an outer case; and c) adjusting at least three radial locators in respective radial positions relative to the outer case, the radial locators being adjustably attached to the outer case and circumferentially aligned with respective spokes, the respective radial locators having an end in contact with an end surface of the respective spokes, the end surface being substantially normal to a radial axis of the respective spokes, the radial locators adjusted to adjust a radial gap between the end surfaces of the spokes and the outer case to thereby center the annular bearing housing within the outer case.