9. After performing the diagnostics process, it is necessary to take appropriate actions to bring the air brake system back to normal and safe levels of operations. The actions can include repairing or replacing the system component. The table below indicates the major components of air brake systems. Complete the table with information on the appropriate procedures for removing, replacing or repairing these components. Components The wheel end section of disc braking systems The wheel end section of drum braking systems Air compressors Air storage tanks Air dryers Brake actuators Foot values Manual slack adjusters Automatic slack adjusters Trailer brake valves Pneumatic and electronic control units/valves Procedures to remove Procedures to replace/ adjust