Abstract: A method of assembling an integrated drive generator includes the steps of providing a bore in a center housing portion, pressing a bearing liner into the bore, with a portion of the bearing liner extending proud of a surface of the center plate, and machining the surface around and adjacent to the bearing liner to provide a machined surface parallel to the surface.

Abstract: A method of assembling an integrated drive generator includes the steps of providing a bore in a center housing portion, pressing a bearing liner into the bore, with a portion of the bearing liner extending proud of a surface of the center plate, and machining the surface around and adjacent to the bearing liner to provide a machined surface parallel to the surface.

Abstract: A method of assembling an integrated drive generator includes the steps of providing a bore in a center housing portion, pressing a bearing liner into the bore, with a portion of the bearing liner extending proud of a surface of the center plate, and machining the surface around and adjacent to the bearing liner to provide a machined surface parallel to the surface.

Abstract: An oil level sensor comprises a body having a probe extending away from a nominal body portion. The probe receives a resistance thermal device and extends for a height away from the nominal surface. The probe has an outer dimension. The ratio of the outer dimension to the height is between 0.1 and 0.2. The RTD is connected to lead wires through splices, the lead wires leaving the nominal housing. A fastener tab extends away from the nominal body, and generally perpendicularly to the probe. The lead wires are anchored within a chamber, which is filled with a potting material.

Abstract: A method of assembling an integrated drive generator includes the steps of providing a bore in a center housing portion, pressing a bearing liner into the bore, with a portion of the bearing liner extending proud of a surface of the center plate, and machining the surface around and adjacent to the bearing liner to provide a machined surface parallel to the surface.

Abstract: An integrated drive generator includes a housing having generator. Center and input housing portions are secured to one another. The center housing portion is sealed relative to the generator input housing portion with seal plates. A hydraulic unit is mounted to the center housing portion. The center housing portion includes first and second parallel surfaces. A machined surface is parallel to and recessed into one of the first and second surfaces in an area of the hydraulic unit. A method of assembling an integrated drive generator includes the steps of providing a bore in a center housing portion, pressing a bearing liner into the bore, with a portion of the bearing liner extending proud of a surface of the center plate, and machining the surface around and adjacent to the bearing liner to provide a machined surface parallel to the surface.

Abstract: An integrated drive generator includes a pump plate having first and second parallel faces defining a first thickness. A passage extends between the first and second faces through the pump plate. Webbing is provided in the passage having a second thickness less than the first thickness. The webbing provides a first volume and the passage provides a second volume. A ratio of the second volume to the first volume is 20.8.

Abstract: A gear assembly includes first and second shafts concentric with one another. First and second gears are respectively provided by the first and second shafts and are arranged adjacent to one another. A biasing assembly cooperates with at least one of the first and second shafts to maintain a desired gap between the first and second gears.

Abstract: An integrated drive generator includes a housing having generator. Center and input housing portions are secured to one another. The center housing portion is sealed relative to the generator input housing portion with seal plates. A hydraulic unit is mounted to the center housing portion. The center housing portion includes first and second parallel surfaces. A machined surface is parallel to and recessed into one of the first and second surfaces in an area of the hydraulic unit. A method of assembling an integrated drive generator includes the steps of providing a bore in a center housing portion, pressing a bearing liner into the bore, with a portion of the bearing liner extending proud of a surface of the center plate, and machining the surface around and adjacent to the bearing liner to provide a machined surface parallel to the surface.

Abstract: A gear assembly includes first and second shafts concentric with one another. First and second gears are respectively provided by the first and second shafts and are arranged adjacent to one another. A biasing assembly cooperates with at least one of the first and second shafts to maintain a desired gap between the first and second gears.

Abstract: A disconnect assembly for an integrated drive generator includes an input shaft configured to receive a rotational input. A coupling member is selectively coupled to the input shaft by dog teeth. A biasing element is configured to disconnect the dog teeth and decouple the coupling member from the input shaft. A thermal coupling opposes the biasing element to maintain engagement between the dog teeth in an unmelted state. The thermal coupling is constructed from a eutectic solder material of 91.3% tin and 8.7% zinc by weight.

Abstract: An improved current transformer has a ring shaped core and a plurality of windings wound around the ring shaped core. The ring shaped core has a rectangular cross sectional area configured to provide a current transformer current rating of at least 375 amperes.

Abstract: An integrated drive generator includes a pump plate having first and second parallel faces defining a first thickness. A passage extends between the first and second faces through the pump plate. Webbing is provided in the passage having a second thickness less than the first thickness. The webbing provides a first volume and the passage provides a second volume. A ratio of the second volume to the first volume is 20.8.

Abstract: A rotor assembly for an electromechanical device includes a molded wire support. The wire support has a body including a first side spaced from a second side and a hole extending through the sides and configured to receive a shaft. The body includes a wall about the hole extending to the first side. At least one end turn support extends outwardly from the wall and is configured to support wires. A molded pocket extends into the wall from the second side without penetrating through to the first side.

Abstract: A seal cartridge for a generator includes a housing which defines an annular cavity. An axial load spring and a seal ring within the annular cavity such that the seal ring is biased by the axial load spring.

Abstract: A rotor assembly for an electromechanical device includes a molded wire support. The wire support has a body including a first side spaced from a second side and a hole extending through the sides and configured to receive a shaft. The body includes a wall about the hole extending to the first side. At least one end turn support extends outwardly from the wall and is configured to support wires. A molded pocket extends into the wall from the second side without penetrating through to the first side.

Abstract: A seal cartridge for a generator includes a housing which defines an annular cavity. An axial load spring and a seal ring within the annular cavity such that the seal ring is biased by the axial load spring.

Abstract: An oil level sensor comprises a body having a probe extending away from a nominal body portion. The probe receives a resistance thermal device and extends for a height away from the nominal surface. The probe has an outer dimension. The ratio of the outer dimension to the height is between 0.1 and 0.2. The RTD is connected to lead wires through splices, the lead wires leaving the nominal housing. A fastener tab extends away from the nominal body, and generally perpendicularly to the probe. The lead wires are anchored within a chamber, which is filled with a potting material.

Abstract: A cylinder block for an axial piston pump or motor is formed from a steel material. The block includes a plurality of bores that each have an internal bore surface of a predefined final material surface finish. The bores are subjected to various machining and heat treating processes to provide a bore surface formed from the same material as the cylinder block, and which has the desired final surface finish. Pistons are mounted within each of the bores for axial movement relative to the cylinder block. Each of the pistons is formed from a steel material and has an exterior surface that is in sliding contact with the internal bore surface. The subject cylinder block is processed to provide a steel-to-steel interface between the bore and piston and eliminates the need for liners to be specially formed or installed within each piston bore.

Abstract: A cylinder block for an axial piston pump or motor is formed from a steel material. The block includes a plurality of bores that each have an internal bore surface of a predefined final material surface finish. The bores are subjected to various machining and heat treating processes to provide a bore surface formed from the same material as the cylinder block, and which has the desired final surface finish. Pistons are mounted within each of the bores for axial movement relative to the cylinder block. Each of the pistons is formed from a steel material and has an exterior surface that is in sliding contact with the internal bore surface. The subject cylinder block is processed to provide a steel-to-steel interface between the bore and piston and eliminates the need for liners to be specially formed or installed within each piston bore.