Trunnion mounted axle assemblies are used on farm tractors, fork lift trucks, golf carts, and earth moving vehicles such as front end loaders. Normally, such axles are mounted by pillow blocks to the vehicle frame and rotation of the axle is resisted by resilient elastomeric bushings which act as torsion springs. These bushings do not provide as long a service life as desired and must frequently be replaced. The present invention overcomes this problem by providing a resisting bar (42) rigidly attached to the end of each trunnion (30) and a resisting cap (44) containing a resiliently deformable member (46). The bar (42) is received in a slot (48). The assembly can be adjusted as necessary to compensate for wear.