Standard

AUT 138 - MANUAL TRANSMISSION/TRANSAXLE

Course Description

Introduces basics of front and rear-wheel drive. Clutch operation, diagnosis and service is included. Electronic controls related to transmission/transaxle operation are discussed. Topics include: clutch diagnosis and repair; transmission/transaxle diagnosis and repair

Competency Areas		Hours
Clutch Diagnosis and Repair		Class	3
Transmission/Transaxle Diagnosis and Repair		D. Lab	0
		P. Lab/O.B.I.	3
		Credit	4
Prerequisite:	AUT 122
Corequisite:

Course Guide

Competency	After completing this section, the student will:	Hours
		Class	D.Lab	P.Lab/ O.B.I.
Clutch Diagnosis and Repair		15		15
	Diagnose clutch noise, binding, slippage, pulsation, and chatter; determine necessary action. Inspect clutch pedal linkage, cables, automatic adjuster mechanisms, brackets, bushings, pivots, and springs; perform necessary action. Inspect hydraulic clutch slave and master cylinders, lines, and hoses; perform necessary action. Inspect release (throw-out) bearing, lever, and pivot; perform necessary action. Inspect and replace clutch pressure plate assembly and clutch disc. Inspect, remove or replace crankshaft pilot bearing or bushing (as applicable). Inspect flywheel and ring gear for wear and cracks, measure runout; determine necessary action. Inspect engine block, clutch (bell) housing, and transmission/transaxle case mating surfaces; determine necessary action. Measure flywheel-to-block runout and crankshaft endplay; determine necessary action.
Transmission/Transaxle Diagnosis and Repair		15		15
	Remove and reinstall transmission/transaxle. Disassemble, clean, and reassemble transmission/transaxle components. Inspect transmission/transaxle case, extension housing, case mating surfaces, bores, bushings, and vents; perform necessary action. Diagnose noise, hard shifting, jumping out of gear, and fluid leakage concerns; determine necessary action. Inspect, adjust, and reinstall shift linkages, brackets, bushings, cables, pivots, and levers. Inspect and reinstall powertrain mounts. Inspect and replace gaskets, seals, and sealants; inspect sealing surfaces. Remove and replace transaxle final drive. Inspect, adjust, and reinstall shift cover, forks, levers, grommets, shafts, sleeves, detent mechanism, interlocks, and springs. Measure endplay or preload (shim or spacer selection procedure) on transmission/transaxle shafts; perform necessary action. Inspect and reinstall synchronizer hub, sleeve, keys (inserts), springs, and blocking rings. Inspect and reinstall speedometer drive gear, driven gear, vehicle speed sensor (VSS), and retainers. Diagnose transaxle final drive assembly noise and vibration concerns; determine necessary action. Remove, inspect, measure, adjust, and reinstall transaxle final drive pinion gears (spiders), shaft, side gears, side bearings, thrust washers, and case assembly. Inspect lubrication devices (oil pump or slingers); perform necessary action. Inspect, test, and replace transmission/transaxle sensors and switches.

Suggested Resources

Books

Duffy, J. E. (2000). Modern AutomotiveTechnology. South Holland, IL: Goodheart-Willcox.

Erjavec, J. (2000). Automotive Technology (3^rd ed.). Albany, NY: Delmar.

Erjavec, J. (2000). Automotive Technology Workbook (3^rd ed.). Albany, NY: Delmar.

Gilles, T. (1999). Automotive Service Inspection, Maintenance, and Repair (1^st ed.). Albany, NY: Delmar

Toboldt, W. K., & Johnson, L. (1995). Automotive Encyclopedia. South Holland, IL: Goodheart-Willcox.

Webster, J., & Owen, C. E. (2000). Basic Automotive Service & Systems (2^nd ed.).

Albany, NY: Delmar.