Automatic adjuster for vehicle brake - has expansion spring actuated by piston for engaging adjusting nut

摘要

The vehicle brake system automatic adjuster has a nut loaded in the adjustment direction to run on a screw spindle with non-jamming threads. The expansion element has a spring (33) held on the projecting end of the actuating piston. The spring has radial arms (39) which engage with the inner screw thread of the nut when the actuating piston moves. Engagement is ensured at very small radial movements.