A method of securing an annulas gear in an aperture in a tractor back axle housing

摘要

A method of securing a first component such as an annulus gear 16 in an aperture 20 in a second component such as a tractor back axle housing 10. The method comprises the steps of: forming gripping formations 21 and a seal receiving recess 22 in an outer peripheral surface of the first component 16 or in an inner peripheral surface of the aperture 20, pressing the first component 16 into the aperture 20 in the second component 10 so that the gripping formations 21 cut into the cooperating surface of the other component to hold the first component in the aperture. A sealing member 23 is inserted into the sealing recess 22 to prevent any fragments of either component dislodged during the pressing operation from escaping from between the components 10, 16. An annular groove 26 may also be formed in the first component inwardly of the gripping formations 21 which serves to capture any fragments of either component dislodged during the pressing operation.