AUT 242 - Basic Automotive Powertrain Credits: 6
Lecture Hours: 3
Lab Hours: 6
Practicum Hours: 0
Work Experience: 0
Course Type: Voc/Tech
Principles of operation and construction of automotive power trains. Includes instruction in the theory of hydraulic and mechanical systems used in automatic transmissions.
- Perform Proper Shop Safety Procedures.
- Apply work area safety skills.
- Demonstrate safe personal working habits.
- Practice safe tool and equipment usage.
- Follow manufacturers repair procedures.
- Follow manufacturer and government warnings and regulations.
- Drivetrain Fundamentals.
- Define the purpose of the automotive drivetrain.
- Identify and explain the common drivetrain configurations.
- Identify the drivetrain components and explain their function.
- Identify different types of transmissions and transaxles.
- Describe the concepts of torque multiplication.
- List the methods of obtaining gear reduction, overdrive, reverse, neutral and the forward gears.
- Flywheel Clutch Assembly Fundamentals.
- Identify different types of automotive clutches and define their major components.
- Identify the different types of automotive flywheels and explain their purpose.
- Explain the operation of the clutch pressure plate and friction disc.
- Explain the operation of the clutch release bearing.
- Explain clutch freeplay.
- Explain the operation of a self-adjusting clutch.
- Manual Transmission/Transaxle Design and Operation.
- Identify and interpret drive train concerns; determine necessary action.
- Research applicable vehicle and service information, fluid type, vehicle service history, service precautions, and technical service bulletins.
- Identify common transmission terms and explain transmission construction.
- Explain power flow through a manual transmission/transaxle.
- Identify terms associated with final drives and differentials for transaxles and explain their operation.
- Explain the operation of transmission/transaxle shift linkage.
- Explain how transmissions/transaxles are internally lubricated and sealed.
- Off-Vehicle Manual Transmission/Transaxle Diagnosis and Repair
- Disassemble, inspect, clean, and reassemble internal transmission/transaxle components.
- Inspect transmission/transaxle case and case mating surfaces, extension housing, bores, bushings, and vents; determine necessary actions.
- Inspect and replace gaskets, seals, and sealants; inspect sealing surfaces.
- Measure endplay and/or preload on transmission/transaxle shafts; determine necessary action.
- Inspect and re-install synchronizer hub, sleeves, keys (inserts), springs, and blocker rings.
- Automatic Transmission/Transaxle Design and Operation.
- Describe basic automatic transmission/transaxle operation.
- Describe the basic laws of physics involved with an automatic transmission operation.
- Classify automatic transmissions according to the power train configuration.
- Identify the major components in a torque converter and explain their purpose.
- Describe the design and operation of the hydraulic controls used in modern transmissions.
- Identify the major apply components in an automatic transmission.
- Identify the components in a basic planetary gear set and describe their operation.
- Describe the purpose and operation of common friction and reaction members.
- Describe the operational characteristics of a continuously variable transmission (CVT).
- Describe the operational characteristics of a hybrid vehicle drive train.
- Off-Vehicle Automatic Transmission/Transaxle Repair.
- Remove and reinstall transmission/transaxle and torque converter.
- Perform inspection and bench testing of torque convertors.
- Disassemble, clean, and inspect transmission/transaxle.
- Inspect, measure, clean, and replace valve body (includes surfaces, bores, springs, valves, sleeves, retainers, brackets, check valves/balls, screens, spacers, and gaskets).
- Inspect servo and accumulator bores, pistons, seals, pins, springs, and retainers; determine necessary action.
- Inspect, measure, and reseal oil pump assembly and components.
- Measure transmission/transaxle end play or preload; determine necessary action.
- Inspect, measure, and replace thrust washers and bearings.
- Inspect oil delivery circuits, including seal rings, ring grooves, and sealing surface areas, feed pipes, orifices, and check valves/balls.
- Inspect bushings; determine necessary action.
- Inspect and measure planetary gear assembly components; determine necessary action.
- Inspect case bores, passages, bushings, vents, and mating surfaces; determine necessary action.
- Diagnose and inspect transaxle drive, link chains, sprockets, gears, bearings, and bushings; perform necessary action.
- Inspect, measure, repair, adjust or replace transaxle final drive components.
- Inspect clutch drum, piston, check-balls, springs, retainers, seals, and friction and pressure plates, bands and drums; determine necessary action.
- Measure clutch pack clearance; determine necessary action.
- Air test operation of clutch and servo assemblies.
- Inspect roller and sprag clutch, races, rollers, sprags, springs, cages, retainers; determine necessary action.
- Assemble transmission/transaxle.
- Four-wheel Drive/All-wheel Drive System Operation.
- Identify and explain the operation of four-wheel drive systems.
- Name the major components of conventional four-wheel-drive systems.
- Discuss the purpose and operation of 4WD locking/unlocking mechanisms.
- Name the components of a transfer case.
- Explain the difference between four-wheel-drive (4WD) and all-wheel-drive (AWD).
- Explain the operation of viscous clutches used in all-wheel-drive systems.
- Four-wheel Drive/All-wheel Drive Component Diagnosis and Repair.
- Disassemble, service, and reassemble transfer case and components.
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