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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