AUT 243 - Adv Automotive Powertrain Credits: 6 Lecture Hours: 2 Lab Hours: 8 Practicum Hours: 0 Work Experience: 0 Course Type: Voc/Tech The student will study powertrain and drive line systems. Proper diagnosis procedures, service and repair will be emphasized through hands-on experience. Prerequisite OR Corequisite: AUT 242
Competencies
- Demonstrate safe work habits.
- Use proper eye protection.
- Select proper tools to work in a safe manner.
- Demonstrate a concern for the safety of fellow workers.
- Diagnosis General Drivetrain Automatic Transmission/Transaxle.
- 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 pressure tests (including transmissions/transaxles equipped with electronic pressure control); determine necessary action.
- Diagnose noise and vibration concerns; determine necessary action.
- Perform stall test; determine necessary action.
- Perform lock-up converter system tests; determine necessary action.
- Diagnose electronic transmission/transaxle control systems using appropriate test equipment and service information.
- Diagnose pressure concerns in a transmission using hydraulic principles (Pascal’s Law).
- Inspect Automatic Transmission/Transaxle In-Vehicle Maintenance and Repair.
- 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.
- Inspect, replace and align powertrain mounts.
- Repair Transmission and Transaxle .
- 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.
- Remove and repair automatic transmission/transaxle as needed.
- Diagnose Manual Drivetrain and Axle General .
- Identify and interpret drive train concerns; determine necessary action.
- Research applicable vehicle and service information, fluid type, vehicle service history, service precautions, and technical service bulletins.
- Check fluid condition; check for leaks; determine necessary action.
- Drain and refill manual transmission/transaxle and final drive unit.
- Perform Clutch procedures by Diagnosis and Repair.
- 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 and replace clutch pressure plate assembly, clutch disc, release (throw-out) bearing and linkage, and pilot bearing/bushing (as applicable).
- Bleed clutch hydraulic system.
- Check and adjust clutch master cylinder fluid level; check for leaks.
- Inspect flywheel and ring gear for wear and cracks; determine necessary action.
- Measure flywheel runout and crankshaft end play; determine necessary action.
- Perform Manual Transmission/Transaxle procedures by Diagnosis and Repair.
- Inspect, adjust, and reinstall shift linkages, brackets, bushings, cables, pivots, and levers.
- Describe the operational characteristics of an electronically-controlled manual transmission/transaxle.
- Diagnose noise concerns through the application of transmission/transaxle power flow principles.
- Diagnose hard shifting and jumping out of gear concerns; determine necessary action.
- Diagnose transaxle final drive assembly noise and vibration concerns; determine necessary action.
- Remove and repair manual transmission/transaxle as needed.
- Service Constant Velocity Shaft /Drive Shaft and Universal Joint.
- Identify types of constant velocity (CV) joints and explain their operation.
- Identify types of universal joints and explain their operation.
- Diagnose constant-velocity (CV) joint noise and vibration concerns; determine necessary action.
- Diagnose universal joint noise and vibration concerns; perform necessary action.
- Inspect, service, and replace shaft center support bearings.
- Inspect, service, and replace shafts, yokes, boots, and universal/CV joints.
- Check shaft balance and phasing; measure shaft runout; measure and adjust driveline angles.
- Perform Ring and Pinion Gears and Differential Case procedures by Diagnosis and Repair.
- Diagnose noise and vibration concerns; determine necessary action.
- Inspect and replace companion flange and pinion seal; measure companion flange runout.
- Inspect ring gear and measure runout; determine necessary action.
- Remove, inspect, and reinstall drive pinion and ring gear, spacers, sleeves, and bearings.
- Measure and adjust drive pinion depth.
- Measure and adjust drive pinion bearing preload.
- Measure and adjust side bearing preload and ring and pinion gear total backlash and backlash variation on a differential carrier assembly (threaded cup or shim types).
- Check ring and pinion tooth contact patterns; perform necessary action.
- Disassemble, inspect, measure and adjust or replace differential pinion gears (spiders), shaft, side gears, side bearings, thrust washers,and case.
- Reassemble and reinstall differential case assembly, measure runout, determine necessary action.
- Diagnose limited slip differential noise, slippage, and chatter concerns, determine necessary action.
- Measure limited slip differential rotating torque,determine necessary action.
- Perform axle shaft repairs.
- Inspect and replace drive axle wheel studs.
- Remove and replace drive axle shafts.
- Inspect and replace drive axle shaft seals, bearings, and retainers.
- Measure drive axle flange runout and shaft end play; determine necessary action.
- Diagnose drive axle shafts, bearings, and seals for noise, vibration, and fluid leakage concerns, determine necessary action.
- Perform Four-Wheel Drive/All-wheel Drive Component procedures by Diagnosis and Repair.
- Inspect, adjust, and repair shifting controls (mechanical, electrical, and vacuum), bushings, mounts, levers, and brackets.
- Inspect front-wheel bearings and locking hubs; perform necessary actions(s).
- Check for leaks at drive assembly seals; check vents; check lube level.
- Identify concerns related to variations in tire circumference and/or final drive ratios.
- Diagnose noise, vibration, and unusual steering concerns; determine necessary action.
- Diagnose, test, adjust, and replace electrical/electronic components of four-wheel drive systems.
- Remove and repair transfer case as needed.
Competencies Revised Date: 2020
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