Skills taught
Research vehicle brakes and cab service information, including fluid type, vehicle service history, service precautionsIdentify brake system components and configurations, including air and hydraulic systems, parking brake, power assistInspect air supply system componentsVerify proper gauge operation and readings, verify operation of low pressure warning alarmInspect service brake chambers, diaphragms, clamps, springs, pushrods, clevises, mounting brackets, and rotor and mountiIdentify slack adjuster type and inspect slack adjusters to determine needed actionCheck camshafts (S-cams), tubes, rollers, bushings, seals, spacers, retainers, brake spiders, shields, anchor pins, andInspect, clean, and adjust air disc brake caliper assemblies, inspect and measure disc brake pads, inspect mounting hardRemove, clean, and inspect brake drum and mounting surface, including measuring brake drum diameter and brake lining thiInspect the parking (spring) brake chamber for leaks and determine needed action, and manually release and reset (cage aInspect and test parking (spring) brake and check valves, lines, hoses, fittings, application and release valve to deterCheck master cylinder fluid level, condition, and fluid type and hydraulic brake system operation including pedal travelInspect hydraulic brake system components for leaks and damagePerform rotor and mounting surface and hardware inspection including cleaning disc brake caliper assembliesRemove brake drum, clean and inspect brake drum and mounting surface, measure brake drum diameter, measure brake liningCheck parking brake operation and inspect parking brake application and holding devicesCheck brake assist and booster system (vacuum or hydraulic) hoses, control valves, fluid level and condition (if applicaCheck operation of warning lights, including automatic traction control (ATC), electronic stability control (ESC), and aClean, inspect, lubricate, and replace wheel bearings and races and cups, replace seals and wear rings, inspect spindleIdentify, inspect, and replace unitized and preset hub bearing assembliesUse appropriate electronic service tools and procedures to check, record, and clear diagnostic codes, checkPerform inspection of cab instruments and controls including mechanical key condition; operation of ignition switchDescribe the operation of auxiliary power unit (APU) and electric power unit (EPU)Perform inspection of cab safety equipment including horn (electric and air) operationPerform inspection of cab hardware including cab mountings, hinges, latches, linkages, ride height, quarter fenderInspect and lubricate all cab grease fittings, door and hood hinges, latches, strikers, lock cylinders, safety latches