Abstract: An electric brake assembly and method are characterized by a brake disk stack (12) and an actuator assembly (11) for applying braking force to the brake disk stack, the actuator assembly including an actuator mounting member (18), and at least one actuator module (27) removably mounted to the actuator mounting member, each actuator module including an electric motor (80) and a ram (26) carried by a respective housing (34), the housing of each actuator module having at least one mounting flange (36) for abutting an axially outwardly facing mounting surface on the actuator mounting member when in a first rotated position within an aperture (42) in the actuator mounting member, and the mounting flange having a configuration for axial passage through the aperture when in a second rotated position, thereby to facilitate easy disassembly of the actuator module from the mounting member.

Abstract: In the invention there is provided a disk brake stack having disks with predetermined available wear portions of a first thickness, a second thickness and a third thickness. In the initial configuration a first group of disks is interleaved with a second group of disks. The first group of disks comprises thick disks and the second group of disks comprises thin disks which have an available wear portion approximately one third of the thickness of the thick disks. At the first overhaul, the thin disks are substantially fully worn and are removed. The second group of disks is replaced with mid-thickness disks which have an available wear portion of about two thirds of the initial thickness of the wear portion of thick disks. At the second overhaul, the remaining wear portion of the first group of disks is approximately the thickness of the wear portion of the thin disks. The second group of disks are removed and replaced with thick disks.