Slack adjuster: It acts as a lever during braking in an air pressure system. Besides, it is also used to adjust the clearance between the brake shoe and the drum for which it usually employs worm and wheel. Related posts: Personnel Management Operative Functions Administrative Role of PM Competency HR Management Role Change Personnel Policies Personnel Procedures Appealed Policies Implied Policies Specific Policies Personnel records Research Pure research Personnel research Attitude or Opinion Survey Turnover Secondary research Applied research Personnel audit Read more articles Previous PostSipe Next PostSlip angle