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AutomaticTransmission Level 2

AUTO 152

AutomaticTransmission Level 2

AUTO 152

Course Description

Prerequisites: Prerequisites: AUTO 102 and AUTO 149.

Practices the service and repair of many automatic transmissions. Practices NATEF tasks to AST (Automotive Service Technology) level related to automatic transmissions. (15-15)

Outcomes and Objectives

Complete general Automotive Transmission and Transaxle Level 2 NATEF tasks as listed below.

Objectives:

  • Identify and interpret transmission/transaxle concern, differentiate between engine performance and transmission/transaxle concerns; determine necessary action.
  • Research applicable vehicle and service information fluid type, vehicle service history, service precautions, and technical service bulletins.
  • Diagnose fluid loss and condition concerns; determine necessary action.
  • Check fluid level in a transmission or a transaxle equipped with a dip-stick.
  • Check fluid level in a transmission or a transaxle not equipped with a dip-stick.
  • Perform stall test; determine necessary action.
  • Perform lock-up converter system tests; 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).

Complete In-Vehicle Transmission/Transaxle Level 2 NATEF tasks as listed below.

Objectives:

  • Inspect, adjust, and replace external manual valve shift linkage, transmission range sensor/switch, and park/neutral position switch.
  • Inspect for leakage; 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.
  • Drain and replace fluid and filter(s).
  • Inspect powertrain mounts.

Complete Off-Vehicle Transmission and Transaxle Level 2 NATEF tasks as listed below.

Objectives:

  • Remove and reinstall transmission/transaxle and torque converter; inspect engine core plugs, rear crankshaft seal, dowel pins, dowel pin holes, and mating surfaces.
  • 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.
  • Describe the operational characteristics of a continuously variable transmission (CVT).
  • Describe the operational characteristics of a hybrid vehicle drive train.