Standard |
ACR 104 - Mechanical and Electrical
Systems
Introduces various mechanical and electrical systems requiring repair of damages incurred through automobile collisions. Topics include: engine accessory systems, emission control systems, air conditioning systems, braking systems, steering column damage, engine removal and replacement sequence, lighting systems, engine wiring, power accessories systems, and restraint systems.
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Competency Areas |
Hours
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Engine Accessory Systems |
Class |
1 |
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Emission Control Systems |
D. Lab |
0 |
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Air Conditioning Systems |
P. Lab/O.B.I. |
3 |
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Braking Systems |
Credit |
2 |
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Steering Column Damage |
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Engine Removal and Replacement Sequence |
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Lighting Systems |
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Engine Wiring |
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Power Accessories Systems |
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Restraint Systems |
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Prerequisite/Corequisite:: |
Program admission, ACR 100, ACR 101, ACR 102 |
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Course Guide |
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Competency |
After completing this
section, the student will: |
Hours |
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Class |
D.Lab |
P.Lab/ O.B.I. |
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ENGINE ACCESSORY SYSTEMS |
1 |
0 |
3 |
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Tools and equipment |
Handle and care for tools and small equipment safely and correctly. |
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Safety |
Demonstrate shop safety. |
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Estimating |
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Inspection, removal, and replacement |
Raise a car on a hydraulic lift-- use proper shop manual. |
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Inspect, remove and replace alternator. |
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Inspect, remove and replace fan. |
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Inspect, remove and replace fan clutch. |
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Inspect, remove and replace water pump. |
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Inspect, remove and replace pulley fan belt. |
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Inspect, remove and replace fan belt. |
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Inspect, remove and replace radiator and hose. |
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Inspect, remove and replace starter. |
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Inspect, remove and replace battery. |
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EMISSION CONTROL SYSTEMS
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1 |
0 |
2 |
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Inspection and testing |
Select proper shop manual. Select appropriate tools. |
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Removal and replacement |
Test, remove and replace charcoal canister and filter. |
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Test, remove and replace PCV valve. |
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Test, remove and replace EGR valve. |
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Inspect, remove and replace catalytic converter. |
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Test, remove and replace air pump. |
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Inspect, remove and replace air filter. |
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Inspect, remove and replace fuel tank. |
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Inspect, remove and replace mufflers and resonators. |
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AIR CONDITIONING SYSTEMS |
1 |
0 |
3 |
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Safety |
Practice safety precautions for eye care and handling refrigerants. |
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Tools |
Select tools and proper shop manual. |
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Inspection, removal, and replacement |
Inspect, remove and replace condenser. |
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Inspect, remove and replace expansion valve. |
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Inspect, remove and replace evaporator. |
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Inspect, remove and replace compressor. |
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Inspect, remove and replace receiver-drier. |
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Test and evaluation |
Evaluate and charge according to manufacturer's specifications. |
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Leak test air conditioning with an electronic detector. |
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BRAKING SYSTEMS
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1 |
0 |
2 |
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Safety |
Safely operate floor jack or hydraulic hoist. Practice safety precautions. |
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Tools |
Select tools and proper shop manual. |
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Inspection, removal, and replacement |
Inspect, remove and replace drum brake rotor. |
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Inspect, remove and replace drum brakes and shoes. |
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Inspect, remove and replace disc brake pads. |
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Inspect, remove and replace hoses and lines. |
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Inspect, remove and replace master cylinder. |
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Inspect, remove and replace wheel cylinder. |
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Inspect, remove and replace brake boosters (manual and power). |
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Bleeding brakes |
Bleed brake system. Replace brake fluid. |
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STEERING COLUMN DAMAGE |
1 |
0 |
3 |
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Types |
Identify types of steering columns. |
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Inspection, removal, and replacement |
Remove and replace steering wheel. |
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Remove and replace hour button. |
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Remove and replace cruise control. |
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Remove and replace tilt and telescope column. |
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Remove and replace windshield wipers. |
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Remove and replace collapsing mesh and canister steering column. |
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Remove and replace signal light switch. |
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ENGINE REMOVAL AND REPLACEMENT SEQUENCE |
1 |
0 |
5 |
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Tools and manuals |
Select proper shop manual and tools. |
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Safety |
Safely operate a floor jack and hydraulic lift. |
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Inspection, removal, and replacement |
Inspect engine for cracks visually. Remove and replace engine. |
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LIGHTING SYSTEMS
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1 |
0 |
3 |
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Schematic and codes |
Explain wire sizing, color coding schematics and protective devices. |
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Trace the headlight circuit on a vehicle. |
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Select the proper wiring diagram from the shop manual. |
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Inspection, removal, and replacement |
Disassemble headlight. |
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Remove and replace headlights. |
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Remove and replace park lights. |
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Remove and replace brake lights. |
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Repair wiring assembly and plug. |
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Replace license plate light. |
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Test bulbs and locate fuse panel. |
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Remove and replace dome, courtesy and dash light bulbs and hazard flashers. |
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Remove and replace corner lights. |
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Remove and replace side marker lights. |
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Testing |
Test lighting. Remove and replace tail and signal lights. |
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ENGINE WIRING
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1 |
0 |
3 |
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Safety |
Demonstrate engine electrical safety precautions. |
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Procedures |
Disconnect and connect choke heater. |
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Disconnect and connect starter motor. |
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Disconnect and connect battery. |
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Remove and replace wire connectors. |
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Disconnect and connect distributor. |
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Disconnect and connect alternator. |
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Disconnect and connect ignition coil. |
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Disconnect and connect oil pressure switch. |
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Disconnect and connect water temperature sending unit. |
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Disconnect and connect fuel cut-off valve solenoid. |
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POWER ACCESSORIES SYSTEMS |
1 |
0 |
3 |
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Inspect and test power accessory systems and determine necessary action. |
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RESTRAINT SYSTEMS |
1 |
0 |
3 |
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Demonstrate safety procedures when working with restraint systems. |
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Determine what components should be replaced and take necessary action. |
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Suggested Resources |
Books
Chudy, H. T. (1988). The complete guide to automotive refinishing
(2nd ed.). Englewood Cliffs, NJ: Prentice Hall.
Deroche, A. G. (1988).
Automotive collision estimating and
repair. Englewood Cliffs, NJ: Prentice Hall.
Deroche, A. G. (1988).
Automotive refinishing handbook.
Englewood Cliffs, NJ: Prentice Hall.
Duenk, L. G., et al.
(1984). Auto body repair. Encino, CA:
Bennett & McKnight.
I-CAR. (1984). Unibody auto collision repair (Series
1-9). Des Plaines, IL: Author.
Author. (1988). Body and mechanic parts service and repair.
San Diego: Mitchell.