ASEP 223W - Transmissions and Drivelines Level 3

1.  AUTOMATIC TRANSMISSION AND TRANSAXLE

1. Diagnose and complete general (ASE) Mast level tasks for Automatic Transmission and Transaxle.

1. Research vehicle service information such as fluid type, vehicle service history, service precautions, technical service bulletins, and recalls including xEVs and/or vehicles equipped with advanced driver assistance systems (ADAS).
2. Identify automatic transmission and transaxle components and configurations, including torque converter automatic, dual-clutch automatic (DCT), CVT, and xEV drive.
3. Retrieve and record on-board diagnostics, DTCs, monitor status, and freeze frame data; clear codes and data when directed.
4. Inspect transmission fluid condition; check fluid level; inspect for leaks on transmission or transaxle equipped with a dipstick.
5. Inspect transmission fluid condition; check fluid level; inspect for leaks on transmission or transaxle not equipped with a dipstick.
6. Diagnose transmission/transaxle gear reduction/multiplication concerns using driving, driven, and held member (power flow) principles.
7. Diagnose pressure concerns in a transmission using hydraulic principles (Pascal's Law).
8. Identify and interpret transmission/transaxle concerns, differentiate between engine performance and transmission/transaxle concerns; determine needed action.
9. Diagnose fluid loss and condition concerns; determine needed action.
10. Perform stall test; determine needed action.
11. Perform lock-up converter system tests; determine needed action.
12. Perform pressure tests on transmissions/transaxles equipped with electronic pressure control; determine needed action.
13. Diagnose electronic transmission/transaxle control systems using appropriate test equipment and service information.
14. Diagnose noise and vibration concerns; determine needed action.

2. Diagnose and complete (ASE) Mast level tasks for In-Vehicle Transmission/Transaxle.

1. Inspect, adjust, and/or replace external manual valve shift linkage, transmission range sensor/switch, and/or park/neutral position switch.
2. Drain and replace fluid and filter(s); use proper fluid type per manufacturer specification.
3. Perform relearn procedures.
4. Inspect, replace/or and align powertrain mounts.
5. Inspect for leakage; replace external seals, gaskets, and bushings.
6. Inspect, test, adjust, repair, and/or replace electrical/electronic components and circuits.

3. Diagnose and complete (ASE) Mast level tasks for Off-Vehicle Transmission and Transaxle.

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

2. MANUAL DRIVE TRAIN AND AXLES

1. Diagnose and complete general (ASE) Mast level tasks for Manual Drive Train and Axles.

1. Research vehicle service information such as fluid type, vehicle service history, service precautions, technical service bulletins, and recalls including xEVs and vehicles equipped with advanced driver assistance systems (ADAS).
2. Identify manual drive train and axles components and configurations.
3. Retrieve and record on-board diagnostics, DTCs, monitor status, and freeze frame data; clear codes and data when directed.
4. Check fluid condition; check for leaks; determine needed action.
5. Drain and refill manual transmission/transaxle; use proper fluid type per manufacturer specification.
6. Diagnose drive train concerns; determine needed action.

2. Diagnose and complete (ASE) Mast level tasks for Clutch.

1. Check and adjust clutch primary cylinder fluid level; check for leaks; use proper fluid type per manufacturer specification.
2. Diagnose clutch noise, binding, slippage, pulsation, and chatter; determine needed action.
3. Inspect clutch pedal linkage, cables, automatic adjuster mechanisms, brackets, bushings, pivots, and springs; determine needed action.
4. Inspect clutch pressure plate assembly, clutch disc, release (throw-out) bearing, linkage, and pilot bearing/bushing (as applicable).
5. Bleed clutch hydraulic system.
6. Inspect flywheel and ring gear for wear, cracks, and discoloration; determine needed action.
7. Measure flywheel runout and crankshaft end play; determine needed action.
8. Describe the operation and service of a system that uses a dual mass flywheel.

3. Diagnose and complete (ASE) Mast level tasks for Transmission/Transaxle.

1. Inspect, adjust, lubricate, and/or replace shift linkages, brackets, bushings, cables, pivots, and levers.
2. Diagnose noise concerns through the application of transmission/transaxle powerflow principles; determine needed action.
3. Diagnose hard shifting and jumping out of gear concerns; determine needed action.
4. Diagnose transaxle final drive assembly noise and vibration concerns; determine needed action.
5. Disassemble, inspect, clean, and reassemble internal transmission/transaxle components.

4. Diagnose and complete (ASE) Mast level tasks for Drive Shaft and Half Shaft, Universal and Constant-Velocity (CV) Joints (Front, Rear, All, and Four-Wheel Drive).

1. Inspect and/or remove/replace bearings, hubs, and seals.
2. Inspect and/or service/replace shafts, yokes, boots, and universal/CV joints.
3. Diagnose constant-velocity (CV) joint noise and vibration concerns; determine needed action.
4. Diagnose universal joint noise and vibration concerns; determine needed action.
5. Check shaft balance and phasing; measure shaft runout; measure and adjust driveline angles; determine needed action.

5. Diagnose and complete (ASE) Mast level tasks for Differential and Drive Axles.

1. Ring and Pinion Gears and Differential Case Assembly
   1. Inspect differential housing; check for leaks; inspect housing vent.
   2. Check and adjust differential housing fluid level; use proper fluid type per manufacturer specification.
   3. Drain and refill differential housing; use proper fluid type per manufacturer specification.
   4. Inspect and replace companion flange and/or pinion seal, measure companion flange runout.
   5. Inspect ring gear and measure runout; determine needed action.
   6. Diagnose noise and vibration concerns; determine needed action.
   7. Remove, inspect, reinstall or replace drive pinion and ring gear, spacers, sleeves, and bearings.
   8. Measure and adjust drive pinion depth.
   9. Measure and adjust drive pinion bearing preload.
   10. 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).
   11. Check ring and pinion tooth contact patterns; determine needed action.
   12. Disassemble, inspect, measure, adjust, and/or replace differential pinion gears (spiders), shaft, side gears, side bearings, thrust washers, and case.
   13. Reassemble and reinstall differential case assembly; measure runout; determine needed action.
2. Diagnose and complete (ASE) Mast level tasks for Drive Axles.
   1. Inspect and replace drive axle wheel studs
   2. Remove and replace drive axle shafts.
   3. Inspect and replace drive axle shaft seals, bearings, and retainers.
   4. Measure drive axle flange runout and shaft end play; determine needed action.
   5. Diagnose drive axle shafts, bearings, and seals for noise, vibration, and fluid leakage concerns; determine needed action.
3. Diagnose and complete (ASE) Mast level tasks for Limited Slip Differential.
   1. Diagnose noise, slippage, and chatter concerns including electronically controlled systems; determine needed action.
   2. Measure rotating torque; determine needed action.

6. Diagnose and complete (ASE) Mast level tasks for Four-wheel Drive/All-wheel Drive.

1. Identify concerns related to variations in tire circumference and/or final drive ratios.
2. Check for leaks at drive assembly and transfer case seals; check vents; check fluid level; use proper fluid type per manufacturer specification.
3. Inspect, adjust, and repair shifting controls (mechanical, electrical, and vacuum), bushings, mounts, levers, and brackets.
4. Inspect axle locking mechanisms; determine needed action(s).
5. Diagnose noise, vibration, and unusual steering concerns; determine needed action.
6. Diagnose, test, adjust, and/or replace electrical/electronic components of four-wheel drive/all-wheel drive systems.
7. Disassemble, service, and reassemble transfer case and components.