AUTO 250 - Automatic Transmis/Transaxles
| JOHNSON COUNTY COMMUNITY COLLEGE |
| TECHNOLOGY DIVISION |
| AUTOMOTIVE TECHNOLOGY |
| COURSE OUTLINE |
| Title: Automatic Transmissions and Transaxles | Effective Term: Spring 2009 | |
| Number: AUTO 250 | Credit Hours: 4 | Contact Hours: 6 |
| Course Type: Career | Lecture Hours: 3 | Lab Hours: 3 |
Description:
Upon completion of this course, the student should be able to diagnose,
service and repair various automatic transmissions and automatic
transaxles, both on vehicle and off vehicle, including computer-controlled
systems. The student will be required to provide ANSI Z87 safety glasses
and may be expected to provide other basic hand tools and/or equipment. 2
hrs. lecture, 6 hrs instructional lab
Associated Costs:
These are additional (out-of-pocket) expense considerations that students
should expect in addition to the course tuition, fees, and textbooks. $0
to $300.
Supplies: Refer to the instructor's course syllabus for details about any supplies that may be required.
| Prerequisite or corequisite: | AUTO 125 Introduction to Automotive Shop Practices or department approval |
Textbook(s): For information see - http://bookstore.jccc.net
Course Fees: NONE
Course Objectives:
Upon successful completion of this course the student should be able to:
- Diagnose general transmission and transaxle problems.
- Adjust and maintain transmissions and transaxles assemblies.
- Repair transmissions and transaxles in the vehicle.
- Repair transmissions and transaxles off the vehicle.
- Recognize and demonstrate productive attitudes and work habits in the automotive shop.
Content Outline & Competencies:
For every task in Automatic Transmission and Transaxle, the
following safety requirement must be strictly enforced:
Comply with personal and environmental safety practices associated with
clothing; eye protection; hand tools; power equipment; proper ventilation;
and the handling, storage, and disposal of chemicals/materials in
accordance with local, state, and federal safety and environmental
regulations.
I. General Transmission and Transaxle Diagnosis
A. Complete work order to include customer information, vehicle
identifying information, customer concern, related service history, cause,
and correction.
B. Identify and interpret transmission/transaxle concern; assure proper
engine operation; determine necessary action.
C. Research applicable vehicle and service information, such as
transmission/transaxle system operation, fluid type, vehicle service
history, service precautions, and technical service bulletins.
D. Locate and interpret vehicle and major component identification
numbers (VIN, vehicle certification labels, and calibration decals).
E. Diagnose fluid loss and condition concerns; check fluid level on
transmissions with and without dip-stick; determine necessary action.
F. Perform pressure tests; determine necessary action.
G. Perform stall test; determine necessary action.
H. Perform lock-up converter system tests; determine necessary action.
I. Diagnose, mechanical and vacuum control system concerns; determine
necessary action.
J. Diagnose noise and vibration concerns; determine necessary action.
K. Diagnose transmission/transaxle gear reduction/multiplication
concerns using driving, driven, and held member (power flow) principles.
L. Diagnose pressure concerns in the transmission using hydraulic
principles (Pascal’s Law).
M. Diagnose electrical/electronical concerns using principals of
electricity (Ohm’s Law).
II. Transmission and Transaxle Maintenance and Adjustment
A. Inspect, adjust or replace throttle valve (TV) linkages or cables;
manual shift linkages or cables; transmission range sensor; check gear
select indicator (as applicable).
B. Service transmission; perform visual inspection; replace fluids and
filters.
III. In-Vehicle Transmission and Transaxle Repair
A. Inspect, adjust or replace (as applicable) vacuum modulator; inspect
and repair or replace lines and hoses.
B. Inspect, repair, and replace governor assembly.
C. Inspect and replace external seals and gaskets.
D. Inspect extension housing, bushings and seals; perform necessary
action.
E. Inspect and replace speedometer drive gear, driven gear, vehicle
speed sensor (VSS), and retainers.
F. Diagnose electronic transmission control systems using a scan tool;
determine necessary action.
G. Inspect, replace, and align powertrain mounts.
IV. Off-Vehicle Transmission and Transaxle Repair
A. Removal, Disassembly, and Reinstallation
1. Remove and reinstall transmission and torque converter (rear-wheel
drive).
2. Remove and reinstall transaxle and torque converter assembly.
3. Disassemble, clean, and inspect transmission/transaxle.
4. Inspect, measure, clean, and replace valve body (includes
surfaces, bores, springs, valves, sleeves, retainers, brackets,
check-balls, screens, spacers, and gaskets).
5. Inspect servo bore, piston, seals, pin, spring, and retainers;
determine necessary action.
6. Inspect accumulator bore, piston, seals, spring, and retainer;
determine necessary action.
7. Assemble transmission/transaxle.
8. Inspect, leak test, and flush cooler, lines, and fittings.
B. Oil Pump and Converter
1. Inspect converter flex plate, attaching parts, pilot, pump drive,
and seal areas.
2. Measure torque converter endplay and check for interference; check
stator clutch.
3. Inspect, measure, and reseal oil pump assembly and components.
C. Gear Train, Shafts, Bushings and Case
1. Measure endplay or preload; determine necessary action.
2. Inspect, measure, and replace thrust washers and bearings.
3. Inspect oil delivery seal rings, ring grooves, and sealing surface
areas.
4. Inspect bushings; determine necessary action.
5. Inspect and measure planetary gear assembly (includes sun, ring
gear, thrust washers, planetary gears, and carrier assembly); determine
necessary action.
6. Inspect case bores, passages, bushings, vents, and mating
surfaces; determine necessary action.
7. Inspect transaxle drive, link chains, sprockets, gears, bearings,
and bushings; perform necessary action.
8. Inspect, measure, repair, adjust or replace transaxle final drive
components.
9. Inspect and reinstall parking pawl, shaft, spring, and retainer;
determine necessary action.
D. Friction and Reaction Units
1. Inspect clutch drum, piston, check-balls, springs, retainers,
seals, and friction and pressure plates; determine necessary action.
2. Measure clutch pack clearance; determine necessary action.
3. Air test the operation of clutch and servo assemblies.
4. Inspect roller and sprag clutch, races, rollers, sprags, springs,
cages, and retainers; determine necessary action.
5. Inspect bands and drums; determine necessary action.
V. Attitude and Work Habits
A. Identify and develop positive attitudes toward tasks and fellow
students appropriate for the workplace, including giving and accepting
criticism and praise.
B. Identify and develop productive work habits, including attending to
detail, completing tasks, maintaining the work setting and recording
data.
C. Identify and develop collaborative/teamwork skills, including
solving problems in groups, building consensus and responding to
supervision.
Methods of Evaluation of Competencies:
Evaluation of student mastery of course competencies will be accomplished using the following methods:
Competency completion level/ Lab Assignments 30-60% of grade Test and quizzes 20-50% of grade Attendance, attitude and work habits 10-20% of grade TOTAL 100% Attitude and Work Habits: Although attendance is important, productive attitudes and work habits affect morale, efficiency, accuracy and safety in the automotive shop and will be a factor in determining grades. In addition, collaboration and teamwork will be expected and evaluated.
Caveats:
- Safety glasses with side shields are required to be worn during lab activities for this course. This is in compliance with accepted eye protection practices and Kansas State Law (K.S.A. 72-5207). Safety glasses must meet American National Standards Institute Z87.1 specifications. (NOTE: Most prescription eyewear does not meet ANSI Z87.1. Students who wear prescription glasses must: a) Provide evidence that existing eyewear meets ANSI Z87.1, or b) Wear cover goggles (if allowable), or c) Purchase and wear ANSI Z87.1 prescription eyewear.
- Lab Guidelines: In order to assist with the safe and efficient operation of the automotive lab area, students are expected to be familiar with and adhere to the Automotive Student Lab Guidelines.
Disabilities:
If you are a student with a disability, and if you will be requesting accommodations, it is your responsibility to contact Access Services. Access Services will recommend any appropriate accommodations to your professor and his/her director. The professor and director will identify for you which accommodations will be arranged.
JCCC provides a range of services to allow persons with disabilities to participate in educational programs and activities. If you desire support services, contact the office of Access Services for Students With Disabilities (913) 469-8500, ext. 3521 or TDD (913) 469-3885. The Access Services office is located in the Success Center on the second floor of the Student Center.

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