AUTO-145: Manual Transmissions and Transaxles

Business, Entrepreneurship, & Professional Development
Automotive Technology
Academic Level
Course Subject
Course Number
Course Title
Manual Transmissions and Transaxles
Credit Hours
Instructor Contact Hours Per Semester
62.00 (for 15-week classes)
Student Contact Hours Per Semester
62.00 (for 15-week classes)
Grading Method
Catalog Course Description

Explores the theory of operation, construction, diagnosis, maintenance, and service of automobile manual transmissions, transaxles, and clutches. Emphasizes how to disassemble, inspect, and measure various transmissions.

Goals, Topics, and Objectives

Core Course Topics
  1. Clutches
    • Theory of Operation
    • Design and Types
    • Linkages
    • Clutch Service
  2. Clutch Diagnosis
    • Clutch Service
    • Clutch Replacement
    • Hydraulic System Diagnosis and Service
    • Flywheel Diagnosis and Inspection
  3. Transmission
    • Gear theory and Design
    • Transmission Types
    • Construction and Torque Capacity
    • Shift Mechanisms
    • Synchronizers
    • Power Flows
    • Lubricants and Lubrication
  4. Transaxles
    • Construction
    • Power Flows
    • Shift Mechanisms
    • Final Drives
  5. Transmission/Transaxle Service
    • Diagnosis of Transmission/Transaxle Concerns
    • Service Techniques/Special Tools
    • Transmission/Transaxle Disassembly
    • Inspection and Gaging
    • Transmission Assembly and Clearance Checks
    • Final Analysis
  6. Propeller Shaft and Universal Joint
    • Drive Shaft Theory and Construction
    • Universal Joint Theory
    • Universal Joint Types and Construction
    • FWD Drive Shafts Theory and Construction
    • Constant Velocity Joints Theory
  7. Propeller Shaft and universal Joint Service
    • Diagnosis of Drive Shaft Concerns
    • Inspection and Measurement
    • Drive Shaft Removal and Installation
    • Universal Joint Diagnosis
    • U-Joint Removal and Installation
Core Course Learning Objectives (Separated)
  • Diagnose transaxle final drive assembly noise and vibration concerns and determine necessary action.
  • Inspect, test and replace transmission/transaxle sensors and switches.
  • Trace power flow through gear ratio.
  • Diagnose clutch noise, slippage, pulsation and shatter, determine necessary action.
  • Inspect housing and flywheel alignment using proper instrumentation and application.
  • Diagnose drive axle shaft bearings for noise, vibration and harshness, determine necessary action.
  • Comprehend and use cause and effect relationships presented in service manual and CD solving trees.
  • Use conventional sentence structure, spelling and punctuation when composing sentences for service reports.
  • Identify specific cause of the described problem by generating conclusions based on known symptoms related to the problem (SSCC rationale).

Assessment and Requirements

Assessment of Academic Achievement

Measurable objectives will be evaluated by the instructor based on accuracy and proficiency and completion of assigned tasks. Homework, class participation, lab activities, quizzes and tests will be used as criteria to assign the student’s final earned grade for this class.

General Course Requirements and Recommendations

Students must take notes on demonstrations, carefully read and analyze assigned course materials and perform exercises to determine their competence in servicing modern manual transmission, driveline and clutch systems.

Approval Dates

Effective Term
Fall 2020
ILT Approval Date
AALC Approval Date
Curriculum Committee Approval Date