Orientation feature for swirler tube

A method of installing a cooling structure in a gas turbine engine comprising:

• providing a mid-turbine frame that defines a cooling cavity and has an opening to define a portion of a cooling flowpath, and providing a cooling component that is configured to direct cooling flow into the cooling cavity, and wherein the mid-turbine frame has a plate portion with a forward face and an aft face;
• providing a bracket that supports the cooling component and has an attachment interface to fix the bracket to the mid-turbine frame, wherein the bracket comprises a forward bracket and an aft bracket, the forward bracket positioned on one side of the mid-turbine frame and having a first mounting flange portion with a center boss portion extending outwardly from the mounting flange portion, and the aft bracket positioned on an opposite side of the mid-turbine frame and having a second mounting flange portion;
• associating the cooling component with the aft bracket;
• associating an inlet tube with the center boss portion of the forward bracket to direct cooling flow through the opening and into the cooling component;
• forming a first orientation feature on the bracket;
• forming a second orientation feature on the mid-turbine frame;
• and
• associating the first and second orientation features with each other to ensure that the cooling component is only installed in one orientation relative to the mid-turbine frame by
• attaching the first mounting flange portion to the forward face, and
• attaching the second mounting flange portion to the aft face;
• to provide a properly installed cooling component when the first and second mounting flange portions are flush with the respective forward and aft faces.