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This course has been changed from the previous catalog, the changed field(s) are highlighted in red:

 Course Title:   Transmissions & Drivetrains


 Department:    AT

 Course #:    141

 Credits:    12

 Variable:     No

 IUs:    15

 CIP:    470604

 EPC:    712

 REV:    2014

 Course Description  

Automatic transmission/transaxle operation, diagnosis and service. Includes principles of planetary gear power flow, valve body, torque converter, and computer controls. Manual transmission/transaxle operation, diagnosis and service. Diagnosis, service and repair of clutch systems and differentials. Students perform a number of tasks and diagnostic tests on a variety of vehicle makes.


Prerequisite or concurrent enrollment: AT 100 or 107; AT 121, 133, WT 133 and WMATH 100.

Additional Course Details

Contact Hours (based on 11 week quarter)

Lecture: 66

Lab: 132

Other: 0

Systems: 0

Clinical: 0

Intent: Distribution Requirement(s) Status:  

Vocational Preparatory Required for ATA degree, Required for certificate  

Equivalencies At Other Institutions

Other Institution Equivalencies Table
Institution Course # Remarks

Learning Outcomes

After completing this course, the student will be able to:

  1. Perform on-the-vehicle diagnosis. Determine appropriate transmission service by following a systematic diagnostic procedure.
  2. Properly utilize repair manuals and service information. Repair assemblies to manufacturer's specifications of tolerances and fit.
  3. Explain automatic transmission operation and service procedures.
  4. Explain theory of planetary gear set power flow.
  5. Utilize application charts and hydraulic circuit diagrams.
  6. Diagnose converter operation and diagnose and repair valve body.
  7. Explain manual transmission operation and service procedures.
  8. Perform routine maintenance and service operations.
  9. Diagnose computer control systems.
  10. Identify the major components of a vehicle's drive train; and explain how a set of gears can increase torque.
  11. Service and repair automatic and manual transmissions.
  12. State the purpose of a transmission, clutch assembly, U and CV joints, and a differential.
  13. Service clutch and flywheel systems.
  14. Explain differential operation and service procedures.
  15. Identify and describe the various gears and the various bearings used in modern drive trains.
  16. Diagnose and repair U-joints.

General Education Learning Values & Outcomes

Revised August 2008 and affects outlines for 2008 year 1 and later.

2. Critical Thinking

Definition: The ability to think critically about the nature of knowledge within a discipline and about the ways in which that knowledge is constructed and validated and to be sensitive to the ways these processes often vary among disciplines.

Outcomes: Students will be able to . . .
2.3 Identify, interpret, and evaluate pertinent data and previous experience to reach conclusions.

3. Communication

Definition: Understanding and producing effective written, spoken, visual, and non-verbal communication.

Outcomes: Students will be able to . . .
3.1 Recognize, read, and comprehend academic and/or professional writing.

6. Individual Awareness & Responsibility

Definition: Understanding, managing, and taking responsibility for one’s learning and behavior in varied and changing environments.

Outcomes: Students will be able to . . .
6.2 Demonstrate standards of professionalism in manner, appearance, and setting appropriate to the context, including the classroom, workplace, and community.

10. Technology

Definition: Understanding the role of technology in society and using technology appropriately and effectively.

Outcomes: Students will be able to . . .
10.3 Use technology appropriate to the context and task to effectively retrieve and manage information, solve problems, and facilitate communication.

Course Contents

  1. Automatic Transmission History and Purpose - Torque Converter Theory, Operation & Diagnosis.
  2. Automatic Transmission Fluids, Filters and Sealing.
  3. Automatic Transmission Cooling systems.
  4. Service Procedures and Identification.
  5. Lock-Up Torque Converters - Theory and Diagnosis.
  6. Planetary Gears and Controls - Power Flows.
  7. Bands Servos and Clutches.
  8. Drivetrain Fundamentals and Safety Procedures.
  9. Basic Hydraulics and Oil Pumps - Pascal's Law.
  10. Oil Control Circuits, Valves and Pressures.
  11. Road and Pressure Checking.
  12. Transmission/Transaxle R & R.
  13. Manual Transmission Diagnosis and Service Procedures.
  14. Electronic Controls.
  15. Clutch System Operation, Service and Repair.
  16. Drive Axle Service.