AUTOMATIC TRANSMISSION AND TRANSAXLE
For every task in Automatic Transmission and Transaxle, the following safety
requirement must be strictly enforced:
Comply with personal and environmental safety practices associated with clothing;
eye protection; hand tools; power equipment; proper ventilation; and the handling,
storage, and disposal of chemicals/materials in accordance with local, state,
and federal safety and environmental regulations.
II. AUTOMATIC TRANSMISSION AND TRANSAXLE
A. General Transmission and Transaxle Diagnosis
1. Identify and interpret transmission/transaxle concern; assure proper engine
operation; determine necessary action. P-1
2. Research applicable vehicle and service information, such as transmission/transaxle
system operation, vehicle service history, service precautions, and technical
service bulletins. P-1
3. Locate and interpret vehicle and major component identification numbers (VIN,
vehicle certification labels, and calibration decals). P-1
4. Diagnose fluid usage, level, and condition concerns; determine necessary
action. P-1
5. Perform pressure tests; determine necessary action. P-1
6. Perform stall test; determine necessary action. P-2
7. Perform lock-up converter system tests; determine necessary action. P-1
8. Diagnose electronic, mechanical, hydraulic, vacuum control system concerns;
determine necessary action. P-1
9. Diagnose noise and vibration concerns; determine necessary action. P-2
10. Diagnose transmission/transaxle gear reduction/multiplication concerns using
driving, driven, and held member (power flow) principles. P-1
II. AUTOMATIC TRANSMISSION AND TRANSAXLE
B. Transmission and Transaxle Maintenance and Adjustment
1. Inspect, adjust or replace throttle valve (TV) linkages or cables; manual
shift linkages or cables; transmission range sensor; check gear select indicator
(as applicable). P-1
2. Service transmission; perform visual inspection; replace fluids and filters.
P-1
II. AUTOMATIC TRANSMISSION AND TRANSAXLE
C. In-Vehicle Transmission and Transaxle Repair
1. Inspect, adjust or replace (as applicable) vacuum modulator; inspect and
repair or replace lines and hoses. P-3
2. Inspect, repair, and replace governor assembly. P-3
3. Inspect and replace external seals and gaskets. P-2
4. Inspect extension housing, bushings and seals; perform necessary action.
P-3
5. Inspect, leak test, flush, and replace cooler, lines, and fittings. P-2
6. Inspect and replace speedometer drive gear, driven gear, vehicle speed sensor
(VSS), and retainers. P-2
7. Diagnose electronic transmission control systems using a scan tool; determine
necessary action. P-1
8. Inspect, replace, and align powertrain mounts. P-2
II. AUTOMATIC TRANSMISSION AND TRANSAXLE
D. Off-Vehicle Transmission and Transaxle Repair
1. Removal, Disassembly, and Reinstallation
1. Remove and reinstall transmission and torque converter (rear-wheel drive).
P-2
2. Remove and reinstall transaxle and torque converter assembly. P-1
3. Disassemble, clean, and inspect transmission/transaxle. P-1
4. Inspect, measure, clean, and replace valve body (includes surfaces and bores,
springs, valves, sleeves, retainers, brackets, check-balls, screens, spacers,
and gaskets). P-2
5. Inspect servo bore, piston, seals, pin, spring, and retainers; determine
necessary action. P-3
6. Inspect accumulator bore, piston, seals, spring, and retainer; determine
necessary action. P-3
7. Assemble transmission/transaxle. P-1
2. Oil Pump and Converter
1. Inspect converter flex plate, attaching parts, pilot, pump drive, and seal
areas. P-2
2. Measure torque converter endplay and check for interference; check stator
clutch. P-2
3. Inspect, measure, and reseal oil pump assembly and components. P-1
3. Gear Train, Shafts, Bushings and Case
1. Measure endplay or preload; determine necessary action. P-1
2. Inspect, measure, and replace thrust washers and bearings. P-2
3. Inspect oil delivery seal rings, ring grooves, and sealing surface areas.
P-2
4. Inspect bushings; determine necessary action. P-2
5. Inspect and measure planetary gear assembly (includes sun, ring gear, thrust
washers, planetary gears, and carrier assembly); determine necessary action.
P-2
6. Inspect case bores, passages, bushings, vents, and mating surfaces; determine
necessary action. P-2
7. Inspect transaxle drive, link chains, sprockets, gears, bearings, and bushings;
perform necessary action. P-2
8. Inspect, measure, repair, adjust or replace transaxle final drive components.
P-2
9. Inspect and reinstall parking pawl, shaft, spring, and retainer; determine
necessary action. P-3
4. Friction and Reaction Units
1. Inspect clutch drum, piston, check-balls, springs, retainers, seals, and
friction and pressure plates; determine necessary action. P-2
2. Measure clutch pack clearance; determine necessary action. P-1
3. Air test operation of clutch and servo assemblies. P-1
4. Inspect roller and sprag clutch, races, rollers, sprags, springs, cages,
and retainers; replace as needed. P-1
5. Inspect bands and drums; determine necessary action. P-2
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