AUTT 2030 Syllabus

Subject Code

AUTT

Course Number

2030

Course Title

Automatic Transmissions and Transaxles

Prerequisites

Prerequisites/Corequisites: AUTT 1010, AUTT 1020

Corequisites

Terms Offered

Offered Summer

Credit Hours

(2-7-5)

Course Description

This course introduces students to basic automatic transmission/transaxle theory, operation, inspection, service, and repair procedures, as well as electronic diagnosis and repair. Topics include general automatic transmission and transaxle diagnosis and in-vehicle and off-vehicle transmission and transaxle maintenance, adjustment, and repair. Students must pay a $20 supply fee when registering for this course.

Course Outcomes

General Transmission and Transaxle Diagnosis
   Order      Description
      1          Complete work order to include customer information, vehicle identifying information, customer
                    concern, related service history, cause and correction.
      2          Identify and interpret transmission/transaxle concern; differentiate between engine performance
                    and transmission/transaxle concerns; determine necessary action.
      3          Research applicable vehicle and service information, such as transmission/transaxle system
                    operation, fluid type, vehicle service history, service precautions, and technical service bulletins.
      4          Locate and interpret vehicle and major component identification numbers.
      5          Diagnose fluid loss and condition concerns; check fluid level in transmissions with and without
                    dipstick; determine necessary action.
      6          Perform pressure tests (including transmissions/transaxles equipped with electronic pressure
                    control); determine necessary action.
      7          Perform stall test; determine necessary action.
      8            Perform lock-up converter system tests; determine necessary action.
      9            Diagnose noise and vibration concerns; determine necessary action.
     10           Diagnose transmission/transaxle gear reduction/multiplication concerns using driving, driven,
                    and held member (power flow) principles.
     11           Diagnose pressure concerns in a transmission using hydraulic principles (Pascal's Law)
     12       Diagnose electronic transmission/transaxle control systems using appropriate test equipment
                    and service information.

In-Vehicle Transmission/Transaxle Maintenance and Repair
   Order      Description
      1        Inspect, adjust, and replace manual valve shift linkage, transmission range sensor/switch, and
                    park/neutral position switch.

      2          Inspect and replace external seals, gaskets, and bushings.
      3          Inspect, test, adjust, repair, or replace electrical/electronic components and circuits, including
                    computers, solenoids, sensors, relays, terminals, connectors, switches, and harnesses.
      4          Diagnose electronic transmission control systems using a scan tool; determine necessary action.
      5          Inspect, replace, and align powertrain mounts.
      6            Service transmission; perform visual inspection; replace fluid and filters.

Off-Vehicle Transmission and Transaxle Repair
   Order      Description
      1          Remove and reinstall transmission/transaxle and torque converter; inspect engine core plugs,
                    rear crankshaft seal, dowel pins, dowel pin holes, and mating surfaces.
      2          Disassemble, clean, and inspect transmission/transaxle.
      3          Inspect, measure, clean, and replace valve body (includes surfaces, bores, springs, valves,
                    sleeves, retainers, brackets, check valves/balls, screens, spaces, and gaskets).
      4          Inspect servo and accumulator bores, pistons, seals, pins, springs, and retainers; determine
                    necessary action.
      5          Assemble transmission/transaxle.
      6            Inspect, leak test, and flush or replace transmission/transaxle oil cooler, lines, and fittings.
      7        Inspect converter flex (drive) plate, converter attaching bolts, converter pilot, converter pump
                    drive surfaces, converter end play, and crankshaft pilot bore.
      8          Install and seat torque converter to engage drive/splines.
      9            Inspect, measure, and reseal oil pump assembly and components.
     10           Measure transmission/transaxle end play or preload; determine necessary action.
     11           Inspect, measure, and replace thrust washers and bearings.
     12           Inspect oil delivery circuits, including seal rings, ring grooves, and sealing surface areas, feed
                    pipes, orifices, and check valves/balls.
     13           Inspect bushings; determine necessary action.
     14           Inspect and measure planetary gear assembly components; determine necessary action.
     15           Inspect case bores, passages, bushings, vents, and mating surfaces; determine necessary
                    action.
     16         Inspect transaxle drive, link chains, sprockets, gears, bearings, and bushings; perform
                    necessary action.
     17         Inspect, measure, repair, adjust or replace transaxle final drive components.
     18         Inspect clutch drum, piston, check-balls, springs, retainers, seals, and friction and pressure
                    plates; determine necessary action.
     19         Measure clutch pack clearance; determine necessary action.
     20         Air test operation of clutch and servo assemblies.
     21       Inspect roller and sprag clutch, races, rollers, sprags, springs, cages, and retainers; determine
                    necessary action.
     22         Inspect bands and drums; determine necessary action.
     23         Describe the operational characteristics of a continuously variable transmission (CVT).
     24           Describe the operational characteristics of a hybrid vehicle drive train.