Explore the range of careers available in the field and investigate their educational requirements, and demonstrate job-seeking skills including resume-writing and interviewing.
Advocate and practice safe, legal, responsible, and ethical use of information and technology tools specific to the industry pathway.
Participate in a Career and Technical Student Organization (CTSO) to increase knowledge and skills and to enhance leadership and teamwork.
Apply literacy, mathematical, and scientific principles and precision measurements when diagnosing problems and making repairs.
Work independently, collaboratively, and in teams to explore concerns, find causes, and take appropriate action by applying principles of STEM.
Research vehicle brakes and cab service information, including fluid type, vehicle service history, service precautions, and technical service bulletins.
Identify brake system components and configurations, including air and hydraulic systems, parking brake, power assist, and vehicle dynamic brake systems, and identify brake performance problems caused by the mechanical/foundation brake system (air and hydraulic).
Inspect air supply system components.
Examples: compressor, governor, air drier, tanks, and lines; service system components including lines, fittings, mountings, and valves (hand brake/trailer control, brake relay, quick release, tractor protection, emergency/spring brake control/modulator, pressure relief/safety)
Verify proper gauge operation and readings, verify operation of low pressure warning alarm, perform air supply system tests, drain air tanks, and check for contamination.
Example: checking air supply system for pressure build-up, governor settings, and leakage
Inspect service brake chambers, diaphragms, clamps, springs, pushrods, clevises, mounting brackets, and rotor and mounting surface, and measure rotor thickness, thickness variation, and lateral runout to determine needed action.
Identify slack adjuster type and inspect slack adjusters to determine needed action.
Check camshafts (S-cams), tubes, rollers, bushings, seals, spacers, retainers, brake spiders, shields, anchor pins, and springs to determine needed action.
Inspect, clean, and adjust air disc brake caliper assemblies, inspect and measure disc brake pads, inspect mounting hardware, and perform needed action.
Remove, clean, and inspect brake drum and mounting surface, including measuring brake drum diameter and brake lining thickness and inspecting brake lining condition, to determine needed action.
Inspect the parking (spring) brake chamber for leaks and determine needed action, and manually release and reset (cage and uncage) parking (spring) brakes.
Inspect and test parking (spring) brake and check valves, lines, hoses, fittings, application and release valve to determine needed action.
Check master cylinder fluid level, condition, and fluid type and hydraulic brake system operation including pedal travel, pedal effort, and pedal feel.
Inspect hydraulic brake system components for leaks and damage.
Perform rotor and mounting surface/hardware inspection including cleaning disc brake caliper assemblies and measuring rotor thickness, thickness variation, lateral runout, and disc brake pads to determine needed action.
Remove brake drum, clean and inspect brake drum and mounting surface, measure brake drum diameter, measure brake lining thickness, inspect brake lining condition, and inspect wheel cylinders to determine needed action.
Check parking brake operation and inspect parking brake application and holding devices.
Check brake assist/booster system (vacuum or hydraulic) hoses, control valves, fluid level and condition (if applicable), and operation of emergency (back-up/reserve) brake assist system.
Check operation of warning lights, including automatic traction control (ATC), electronic stability control (ESC), and anti-lock brake system (ABS) (dash and trailer mounted).
Clean, inspect, lubricate, and replace wheel bearings and races/cups, replace seals and wear rings, inspect spindle/tube, inspect and replace retaining hardware, adjust wheel bearings, check hub assembly fluid level and condition, and verify end play with dial indicator method.
Identify, inspect, and replace unitized/preset hub bearing assemblies.
Use appropriate electronic service tools and procedures to check, record, and clear diagnostic codes, check and record trip/operational data, reset maintenance monitor (if applicable), and interpret digital multimeter (DMM) readings for cab systems.
Perform inspection of cab instruments and controls including mechanical key condition; operation of ignition switch; operation of indicator lights, warning lights, and alarms; operation of electronic power take-off (PTO) and engine idle speed controls (if applicable); operation of accessories; oil pressure; and system voltage.
Describe the operation of auxiliary power unit (APU) and electric power unit (EPU).
Perform inspection of cab safety equipment including horn (electric and air) operation, warning device operation (reverse, air pressure), spare fuse condition, safety triangles, fire extinguisher, required decals, seat belts, sleeper restraints, and condition of wiper blades and arms.
Perform inspection of cab hardware including cab mountings, hinges, latches, linkages, ride height, quarter fender, mud flaps, brackets, wipers, washer, windshield, sun visor, seat condition, operation, and mounting, all cab glass, window operation, door and cab lock operation, steps, grab handles, and mirrors, mountings, and brackets, and record physical damage.
Inspect and lubricate all cab grease fittings, door and hood hinges, latches, strikers, lock cylinders, safety latches, linkages, and cables.
Incorporate safety procedures in handling, operating, and maintaining tools and machinery; handling materials; utilizing personal protective equipment; maintaining a safe work area; and handling hazardous materials and forces.
Demonstrate effective workplace and employability skills, including communication, awareness of diversity, positive work ethic, problem-solving, time management, and teamwork.
Explore the range of careers available in the field and investigate their educational requirements, and demonstrate job-seeking skills including resume-writing and interviewing.
Advocate and practice safe, legal, responsible, and ethical use of information and technology tools specific to the industry pathway.
