AUT 535 - Adv Auto Brakes & Alignment Credits: 5 Lecture Hours: 2 Lab Hours: 6 Practicum Hours: 0 Work Experience: 0 Course Type: Voc/Tech The student will study advanced brakes and alignment theory, practice proper diagnosis, service and repair procedures through hands-on experience. Prerequisite: AUT 404 Prerequisite OR Corequisite: AUT 524 Competencies
- Perform proper shop safety procedures.
- Apply work area safety skills.
- Demonstrate safe personal working habits.
- Practice safe tool and equipment usage.
- Follow manufacturer and government warnings and regulations and repair procedures.
- General: Suspension, Steering and Brakes Systems.
- Research applicable vehicle and service information, vehicle service history, service precautions, and technical service bulletins.
- Identify and interpret brake, suspension, and steering system concerns; determine necessary action.
- Describe procedure for performing a road test to check brake system operation; including an anti-lock brake system (ABS).
- Suspension Systems Diagnosis and Repair.
- Identify and interpret suspension and steering system concerns; determine necessary action.
- Diagnose short and long arm suspension system noises, body sway, and uneven ride height concerns; determine necessary action.
- Diagnose strut suspension system noises, body sway, and uneven ride height concerns; determine necessary action.
- Inspect, remove and install front suspension system components using correct tools and procedures.
- Inspect, remove and install rear suspension system components using correct tools and procedures.
- Diagnose ELC system concerns; determine necessary action.
- Steering System Diagnosis and Repair.
- Inspect steering shaft universal-joint(s), flexible coupling(s), collapsible column, lock cylinder mechanism, and steering wheel; perform necessary action.
- Diagnose power steering gear (rack and pinion/non-rack and pinion) binding, uneven turning effort, looseness, hard steering, and noise concerns; determine necessary action.
- Evaluate steering system linkage; determine necessary action.
- Evaluate power steering system operation; determine necessary action.
- Flush, fill, and bleed power steering system.
- Test and diagnose components of electronically-controlled steering systems using a scan tool; determine necessary action.
- Identify hybrid vehicle power steering system electrical circuits and safety precautions.
- Inspect electric power-assisted steering.
- Wheel Alignment Diagnosis, Adjustment, and Repair.
- Diagnose vehicle wander, drift, pull, hard steering, bump steer, memory steer, torque steer, and steering return concerns; determine necessary action.
- Perform pre-alignment inspection and measure vehicle ride height; perform necessary action.
- Prepare vehicle for wheel alignment on alignment machine; perform four-wheel alignment by checking and adjusting front and rear wheel caster, camber and toe as required; center steering wheel.
- Check toe-out-on-turns (turning radius); determine necessary action.
- Check SAI (steering axis inclination) and included angle; determine necessary action.
- Check rear wheel thrust angle; determine necessary action.
- Check for front wheel setback; determine necessary action.
- Check front and/or rear cradle (sub-frame) alignment; determine necessary action.
- Reset steering angle sensor.
- Wheels and Tires Diagnosis and Repair.
- Inspect tire condition; identify tire wear patterns; check for correct tire size and application (load and speed ratings) and adjust air pressure; determine necessary action.
- Diagnose wheel/tire vibration, shimmy, and noise; determine necessary action.
- Measure wheel, tire, axle flange, and hub runout; determine necessary action.
- Diagnose tire pull problems; determine necessary action.
- Dismount, inspect, and remount tire on wheel equipped with tire pressure monitoring system sensor.
- Identify and test tire pressure monitoring system (indirect and direct) for operation; calibrate system; verify operation of instrument panel lamps.
- Brake Hydraulic System Diagnosis and Repair.
- Remove, bench bleed, and reinstall master cylinder.
- Inspect, remove, clean, and repair/install hydraulic brake system components including the fabrication and installation of brake lines as needed.
- Select, handle, store, and fill brake fluids to proper level.
- Bleed and/or flush brake system.
- Test brake fluid for contamination; determine necessary action.
- Drum Brake Diagnosis and Repair.
- Diagnose poor stopping, noise, vibration, pulling, grabbing, dragging or pedal pulsation concerns; determine necessary action.
- Remove, clean, inspect, and repair drum brake assemblies as needed.
- Refinish brake drum and measure final drum diameter; compare with specifications; as needed.
- Describe importance of operating vehicle to burnish/break-in replacement brake pads according to manufacturer?s recommendations.
- Disc Brake Diagnosis and Repair.
- Diagnose poor stopping, noise, vibration, pulling, grabbing, dragging, or pulsation concerns; determine necessary action.
- Remove, clean, inspect, and repair front disc brake assemblies as needed.
- Remove, clean, inspect, and repair rear disc brake assemblies as needed.
- Refinish rotor on vehicle; measure final rotor thickness and compare with specifications.
- Check brake pad wear indicator; determine necessary action.
- Describe importance of operating vehicle to burnish/break-in replacement brake pads according to manufacturer’s recommendations.
- Power-Assist Units Diagnosis and Repair.
- Check vacuum supply (manifold or auxiliary pump) to vacuum-type power booster.
- Inspect vacuum-type power booster unit for leaks; inspect the check-valve for proper operation; determine necessary action.
- Inspect and test hydraulically-assisted power brake system for leaks and proper operation; determine necessary action.
- Measure and/or adjust master cylinder pushrod length; determine necessary action.
- Miscellaneous (Wheel Bearings, Parking Brakes, Electrical, Etc.) Diagnosis and Repair.
- Diagnose wheel bearing noises, wheel shimmy, and vibration concerns; determine necessary action.
- Inspect and repair wheel bearing assemblies as needed.
- Check parking brake cables and components for wear, binding, and corrosion; clean, lubricate, adjust or replace as needed.
- Check parking brake operation and parking brake indicator light system operation; determine necessary action.
- Identify components of brake warning light system.
- Inspect, test, and/or replace components of brake warning light system.
- Check operation of brake stop light system.
- Electronic Brake, Traction and Stability Control Systems Diagnosis and Repair.
- Identify and inspect electronic brake control system components; determine necessary action.
- Identify traction control/vehicle stability control system components.
- Describe the operation of a regenerative braking system.
- Diagnose electronic brake control system electronic control(s) and components by retrieving diagnostic trouble codes, and/or using recommended test equipment; determine necessary action.
- Bleed the electronic brake control system hydraulic circuits.
- Test, diagnose, and service electronic brake control system speed sensors (digital and analog), toothed ring (tone wheel), and circuits using a graphing multi-meter (GMM)/digital storage oscilloscope (DSO) (includes output signal, resistance, shorts to voltage/ground, and frequency data).
- Diagnose electronic brake control system braking concerns caused by vehicle modifications (tire size, curb height, final drive ratio, etc.).
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