AUT 200 - Automotive Automatic Transmissions and Transaxles
Last Date of Approval: 4-2021
3 Credits
Total Lecture Hours: 22.5
Total Lab Hours: 45
Total Clinical Hours: 0
Total Work-Based Experience Hours: 0
Course Description:
This course covers automatic transmission/transaxle theory and repair. Students will receive classroom and lab instruction on the inspection, disassembly, reassemble, and operational testing of the automotive transmission. This course also covers an in-depth analysis of computer-controlled transmissions and transaxles. This course will help students refine their critical thinking skills as they evaluate various topics and concepts while searching for underlying connections between the concepts, which is a skill that should be beneficial in any/all types of careers. The students will increase their mechanical aptitude that can be used in many aspects of their life.
Prerequisites/Corequisites: A student is to have completed all prior program courses with a “C” or better grade. Any exception will have to be approved in writing by the Program Coordinator and Department Chair. Because of changes in technology, students taking program over an extended period of time may be advised to retake courses to update skills and competencies.
Mode(s) of Instruction: Traditional/face-to-face
Credit for Prior Learning: There are no Credit for Prior Learning opportunities for this course.
Course Fees: Course materials: $20.00
Common Course Assessment(s): None
Student Learning Outcomes and Objectives:
Student Leaning Outcomes:
1. General transmission and Transaxle Diagnosis.
2. In-Vehicle Transmission/Transaxle Maintenance and Repair
3. Off-Vehicle Transmission and Transaxle Repair
Course Objectives:
- Complete work order to include customer information, vehicle identifying information, customer concern, related service history, cause, and correction. Identify and interpret transmission/transaxle concern; differentiate between engine performance and transmission/transaxle concerns; determine necessary action.
- Research applicable vehicle and service information, such as transmission/transaxle system operation, fluid type, vehicle service history, service precautions, and technical service bulletins.
- Locate and interpret vehicle and major component identification numbers.
- Diagnose fluid loss and condition concerns; check fluid level in transmissions with and without dip-stick; determine necessary action.
- Perform pressure tests (including transmissions/transaxles equipped with electronic pressure control); determine necessary action.
- Perform stall test; determine necessary action.
- Perform lock-up converter system tests; determine necessary action.
- Diagnose noise and vibration concerns; determine necessary action.
- Diagnose transmission/transaxle gear reduction/multiplication concerns using driving, driven, and held member (power flow) principles.
- Diagnose pressure concerns in a transmission using hydraulic principles (Pascal’s Law).
- Diagnose electronic transmission/transaxle control systems using appropriate test equipment and service information.
- Inspect, adjust, and replace manual valve shift linkage, transmission range sensor/switch, and park/neutral position switch.
- Inspect and replace external seals gaskets, and bushings.
- Inspect, test, adjust, repair, or replace electrical/electronic components and circuits, including computers, solenoids, sensors, relays, terminals, connectors, switches, and harnesses.
- Diagnose electronic transmission control systems using a scan tool; determine necessary action. Inspect, replace, and align powertrain mounts.
- Service transmission; perform visual inspection; replace fluid and filters.
- Remove and reinstall transmission/transaxle and torque converter; inspect engine core plugs, rear crankshaft seal, dowel pins, dowel pin holes, and mating surfaces.
- 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.
- Assemble transmission/transaxle.
- Inspect, leak test, and flush or replace transmission/transaxle oil cooler, lines, and fittings. Inspect converter flex (drive) plate, converter attaching bolts, converter pilot, converter pump drive surfaces, converter end play, and crankshaft pilot bore.
- Install and seat torque converter to engage drive/splines.
- 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 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; 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, and retainers; determine necessary action.
- Inspect bands and drums; determine necessary action.
- Describe the operational characteristics of a continuously variable transmission.
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