Abstract: A front axle of a motor vehicle with steerable, driven or not driven wheels on steering knuckles, which have been pivotably hinged at a wheel-guiding element with an upper and a lower bearing position, each of which with a pot-shaped sleeve with a sealed lubricant reservoir, accommodating a radial bearing for mounting a steering knuckle bolt and forming a bearing bushing, a stop disk, which absorbs axial forces and at which the roll bodies of the radial bearing are supported with the supporting surfaces, being disposed at the bottom of the sleeve.

Abstract: A valve control device for a cam-shaft controlled exhaust valve of a cylinder of a motor vehicle internal combustion engine with an exhaust cutoff brake wherein an actuator closes a throttle valve in the exhaust of the cylinder to initiate a braking operation, characterized in that a hydraulic valve clearance compensation element is arranged between the cam-shaft and the exhaust valve whereby an adjusting piston is guided in a cylindrical body and is loaded by a return spring and a control element is provided to retain the adjusting piston relative to cylindrical body during braking in the adjusted position respectively reached at the beginning of the braking operation wherein the control element acts upon the hydraulic valve clearance compensation element during braking operation with a force which exceeds or at least corresponds to the force of the return spring of the hydraulic valve clearance compensation element and counteracts the latter.