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AUT 114 - Brake System ServiceCredits: 5 Studies drum, disc, hydraulic, power assist, antilock terminology, operation, and diagnosis. Develops skills on drum, disc, hydraulic, power assist, and antilock brake systems.
Prerequisite(s): AUT 100 and AUT 108 each with a minimum grade of "C" (2.0) Corequisite(s): AUT 110 , AUT 112W Lecture Hours: 40 Lab Hours: 60 Meets MTA Requirement: None Pass/NoCredit: No
Outcomes and Objectives
- Diagnose general brake systems. Complete 95% of Priority 1, 80% of Priority 2, and 50% of Priority 3 NATEF tasks as listed below.
- Identify and interpret brake system concern; determine necessary action. P-1
- Research applicable vehicle and service information, such as brake system operation, vehicle service history, service precautions, and technical service bulletins. P-1
- Locate and interpret vehicle and major component identification numbers (VIN, vehicle certification labels, calibration decals). P-1
- Diagnose and repair hydraulic system. Complete 95% of Priority 1, 80% of Priority 2, and 50% of Priority 3 NATEF tasks as listed below.
- Diagnose pressure concerns in the brake system using hydraulic principles (Paschal's Law). P-1
- Measure brake pedal height; determine necessary action. P-2
- Check master cylinder for internal and external leaks and proper operation; determine necessary action. P-2
- Remove, bench bleed, and reinstall master cylinder. P-1
- Diagnose poor stopping, pulling or dragging concerns caused by malfunctions in the hydraulic system; determine necessary action. P-1
- Inspect brake lines, flexible hoses, and fittings for leaks, dents, kinks, rust, cracks, bulging or wear; tighten loose fittings and supports; determine necessary action. P-2
- Fabricate and/or install brake lines (double flare and ISO types); replace hoses, fittings, and supports as needed. P-2
- Select, handle, store, and fill brake fluids to proper level. P-2
- Inspect, test, and/or replace metering (hold-off), proportioning (balance), pressure differential, and combination valves. P-2
- Inspect, test, and adjust height (load) sensing proportioning valve. P-3
- Inspect, test, and/or replace components of brake warning light system. P-3
- Bleed (manual, pressure, vacuum or surge) brake system. P-1
- Flush hydraulic system. P-3
- Diagnose and repair drum brake systems. Complete 95% of Priority 1, 80% of Priority 2, and 50% of Priority 3 NATEF tasks as listed below.
- Diagnose poor stopping, noise, pulling, grabbing, dragging or pedal pulsation concerns; determine necessary action. P-1
- Remove, clean (using proper safety procedures), inspect, and measure brake drums; determine necessary action. P-1
- Refinish brake drum. P-1
- Remove, clean, and inspect brake shoes, springs, pins, clips, levers, adjusters/self-adjusters, other related brake hardware, and backing support plates; lubricate and reassemble. P-1
- Remove, inspect, and install wheel cylinders. P-2
- Pre-adjust brake shoes and parking brake before installing brake drums or drum/hub assemblies and wheel bearings. P-1
- Install wheel, torque lug nuts, and make final checks and adjustments. P-1
- Diagnose and repair disc brake systems. Complete 95% of Priority 1, 80% of Priority 2, and 50% of Priority 3 NATEF tasks as listed below.
- Diagnose poor stopping, noise, pulling, grabbing, dragging or pedal pulsation concerns; determine necessary action. P-1
- Remove caliper assembly from mountings; clean and inspect for leaks and damage to caliper housing; determine necessary action. P-1
- Clean and inspect caliper mounting and slides for wear and damage; determine necessary action. P-1
- Remove, clean, and inspect pads and retaining hardware; determine necessary action. P-1
- Disassemble and clean caliper assembly; inspect parts for wear, rust, scoring, and damage; replace seal, boot, and damaged or worn parts. P-2
- Reassemble, lubricate, and reinstall caliper, pads, and related hardware; seat pads, and inspect for leaks P-1
- Clean, inspect, and measure rotor with a dial indicator and a micrometer; follow manufacturer’s recommendations in determining need to machine or replace. P-1
- Remove and reinstall rotor. P-1
- Refinish rotor according to manufacturer’s recommendations. P-1
- Adjust calipers equipped with an integrated parking brake system. P-3
- Install wheel,
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