BrakesWVEIS Code 1625
This course will introduce students to the basic fundamental skills, technology, and service of automotive brake systems. Students will comply with personal and environmental safety practices associated with proper ventilation, handling, storage, and disposal of brake components.
Standard 1: Perform hydraulic system diagnosis and repair. (1625.S.1)
Hydraulic System Diagnosis and Repair Objectives
Students will:
1625.1.1Check master cylinder for internal and external leaks and proper operation; determine needed repairs.
1625.1.2Remove, bench bleed, and replace master cylinders.
1625.1.3Diagnose poor stopping, pulling or dragging caused by problems in the hydraulic system; determine needed repairs.
1625.1.4Inspect brake lines and fittings for leaks, dents, kinks, rust, cracks or wear; tighten loose fittings and supports.
1625.1.5Fabricate and install brake lines (double flare and ISO types); replace hoses, fittings, and supports as needed.
1625.1.6Select, handle, store, and install brake fluids to proper level. Bleed (manual, pressure, vacuum or surge) brake system; flush hydraulic system.
1625.1.7Inspect, test, and replace metering (hold-off), proportioning (balance), pressure differential, and combinations valves.
1625.1.8Inspect, test, replace and adjust height (load) sensing proportioning valve.
1625.1.9Inspect, test, and replace components of brake warning light system.
Standard 2: Demonstrate drum brake diagnosis and repair. (1625.S.2)
Drum Brake Diagnosis and Repair Objectives
Students will:
1625.2.1Diagnose poor stopping, noise, pulling, grabbing, dragging or pedal pulsation problems; determine needed repairs.
1625.2.1Remove, clean (using proper safety procedures), inspect, and measure brake drums. Service (mount brake drum on lathe and machine) or replace as needed.
1625.2.3Remove, clean, and inspect brake shoes, springs, pins, clips, levers, adjusters/self-adjusters, and backing support plates; lubricate/reassemble.
1625.2.4Remove and reinstall wheel cylinders.
1625.2.5Pre-adjust brake shoes and parking brake before installing brake drums or drum/hub assemblies and wheel bearings.
Standard 3: Demonstrate disc brake diagnosis and repair. (1625.S.3)
Disc Brake Diagnosis and Repair Objectives
Students will:
1625.3.1Diagnose poor stopping, noise, pulling, grabbing, dragging, or pedal pulsation caused problems; determine needed repairs.
1625.3.2Remove caliper assembly from mountings; clean and inspect for leaks and damage to caliper housing. Inspect parts for wear, rust, scoring, and damage; replace seal, boot or worn parts. Clean and inspect caliper mounting and slides for wear and damage.
1625.3.3Remove, clean, and inspect pads and retaining hardware; determine needed service. Reassemble, lubricate, and reinstall caliper, pads, and related hardware.
1625.3.4Clean, inspect, and measure rotor with a dial indicator and a micrometer; follow manufacturer’s recommendations in determining need to machine or replace.
1625.3.5Adjust calipers with integrated parking brake system. Fill master cylinder with recommended fluid and seat pads; inspect caliper for leaks.
1625.3.6Reinstall wheel, torque lug nuts, and make final checks and adjustments.
Standard 4: Perform diagnosis and repair of power assist units. (1625.S.4)
Power Assist Units Objectives
Students will:
1625.4.1Test pedal free travel with and without engine running; check power assist operation.
1625.4.2Check vacuum supply (manifold or auxiliary pump) to vacuum-type power booster.
1625.4.3Inspect the vacuum-type power booster unit for vacuum leaks; inspect the check valve for proper operation; repair or replace parts as needed.
Standard 5: Perform diagnosis and repair of miscellaneous items. (1625.S.5)
Diagnosis and Repair of Miscellaneous Items Objectives
Students will:
1625.5.1Diagnose wheel bearing noises, wheel shimmy, and vibration problems; determine needed repairs.
1625.5.2Remove, clean, inspect, re-pack, and reinstall wheel bearings and replace seals; reinstall hub and adjust wheel bearings. Replace wheel bearing and race as needed.
1625.5.3Check parking brake cables and components for wear, rusting, binding, corrosion and clean, lubricate and replace as needed.
1625.5.4Check parking brake operation; adjust as needed. Check operation of parking brake indicator light system.
1625.5.5Check operation of brake stop light system; adjust and service as needed.
Standard 6: Perform diagnosis and repair of an anti-lock brake system. (1625.S.6)
Anti-Lock Brake System Objectives
Students will:
1625.6.1Inspect, test, and service anti-lock brake system (ABS) hydraulic, electrical, and mechanical components. Observe anti-lock brakes system (ABS) warning light(s) at startup; determine if further diagnosis is needed.
1625.6.2Diagnose poor stopping, wheel lock-up, abnormal pedal feel or pulsation, and noise problems caused by the anti-lock brake system (ABS); determine needed repairs.
1625.6.3Diagnose anti-lock brake system (ABS) electronic control(s) and components using self-diagnosis and/or recommended test equipment; determine needed repairs.
1625.6.4Depressurize high pressure components of the anti-lock brake system (ABS) following manufacturer’s recommended safety procedures.
1625.6.5Fill and bleed the anti-lock brake system’s (ABS) front and rear hydraulic circuits and master cylinder with recommended fluid following manufacturer’s procedures; inspect system for leaks.
1625.6.6Perform a fluid pressure (hydraulic boost) diagnosis on the high pressure anti-lock brake system (ABS); determine needed repairs.
1625.6.7Remove and install anti-lock brake system (ABS) electrical/electronic and hydraulic components following manufacturer’s procedures and specifications.
1625.6.8Service, test, and adjust anti-lock brake system (ABS) speed sensors following manufacturer’s recommended procedures
1625.6.9Diagnose anti-lock brake system (ABS) braking problems caused by vehicle modifications (tire size, curb height, final drive ratio, etc.).
1