engine CHEVROLET AVEO 2002 Service Repair Manual

Fig. 80: Removing Upper Transaxle-To-Engine & Mounting Bolts
Courtesy of GENERAL MOTORS CORP.
16. Remove the 3 upper transaxle-to-en
gine mounting bolts.

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2006 TRANSMISSION Automatic Transaxle - Aisin (81-40LE) - Introduction (2 Of 2) - Aveo
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Fig. 82: Removing Lower Transaxle-To-Engine & Retaining Bolts
Courtesy of GENERAL MOTORS CORP.
18. Remove the 7 lower transaxle-to-en
gine retaining bolts.

2006 Chevrolet Aveo
2006 TRANSMISSION Automatic Transaxle - Aisin (81-40LE) - Introduction (2 Of 2) - Aveo
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Fig. 85: Installing Transaxle Lower & Retaining Bolts
Courtesy of GENERAL MOTORS CORP.
2. Install the 7 lower transaxle-to-engine retaining bolts.
Tighten:
Tighten the bolts (1) to 73 N.m (54 lb ft).
Tighten the bolts (3) to 31 N.m (23 lb ft).
Tighten the bolts (2) to 21 N.m (15 lb ft).
NOTE: Refer to Fastener Notice .

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Fig. 86: Installing Upper Transaxle-To-Engine & Mounting Bolts
Courtesy of GENERAL MOTORS CORP.
3. Install the 3 upper transaxle-to-engine mounting bolts.
Tighten: Ti
ghten the 3 upper transaxle-to-engine mounting bolts to 73 N.m (54 lb ft).

2006 Chevrolet Aveo
2006 TRANSMISSION Automatic Transaxle - Aisin (81-40LE) - Introduction (2 Of 2) - Aveo
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Fig. 91: J 28467-B & Engine
Courtesy of GENERAL MOTORS CORP.
13. Remove the J 28467-B (1).
14. Connect the shift control cable into the transaxle. Refer to Shift Control Cable Replacement
- Floor
Shift.

2006 Chevrolet Aveo
2006 TRANSMISSION Automatic Transaxle - Aisin (81-40LE) - Introduction (2 Of 2) - Aveo
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Fig. 121: Transmission Fluid Level Graph
Courtesy of GENERAL MOTORS CORP.
1. Make sure the vehicle is level.
2. Shift into all range from P to 1 and return to P with engine idling.
3. Remove the transaxle fluid dipstick and check the transaxle fluid level.
IMPORTANT: When adding fluid or making a complet fluid change, always use T-IV
Automatic Transmission Fluid.
IMPORTANT: Measure the fluid level when the transaxle temperature is 70°C-80°C (158°
F-176°F).
IMPORTANT: During the fluid level check, the selector lever must be in position P.

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2006 TRANSMISSION Automatic Transaxle - Aisin (81-40LE) - Introduction (2 Of 2) - Aveo
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Filling Procedure
Fig. 124: Fluid Level & Dipstick
Courtesy of GENERAL MOTORS CORP.
1. Remove the drainage container and lower the vehicle.
2. Add 3/4 of the recommended amount of T-IV Automatic Transmission Fluid.
3. Start the engine and allow it to reach normal operating temperature.
4. Shift the gear selector through all positions.

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A. Front Planetary Gear
B. Rear Planetary Gear
D - 4th Gear
1. The input shaft rotates clockwise.
The direct clutch (C2) operates. Connect the input shaft to the planetary carrier.
2. The planetary carrier revolves clockwise.
3. The planetary long pinion rotates itself clockwise.
4. The rear planetary sun gear is going to rotate counterclockwise.
The O/D and 2nd brake (B1) operates. Lock rotates the planetary sun gear.
5. The planetary long pinion revolves clockwise while rotating itself clockwise.
6. The ring gear rotates clockwise.
7. The counter drive gear rotates clockwise for the ring gear and one.
8. The counter driven gear rotates counterclockwise.
9. The differential gear drive pinion rotates counterclockwise for the counter driven gear and one.
10. The differential gear rotates clockwise.
Engine Brake
The driving force is connected to the input shaft directory without the 1-way clutch. Therefore the engine brake
operates.
MANUAL THIRD GEAR
Manual Third Gear
Position
SolenoidClutchBrake1-Way Clutch
Shift 1Shift 2TimingC1C2C3B1B2B3F1F2
D3rdOFFOFFOFFONONOFFOFFONOFFOFFOFF

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1. The input shaft rotates clockwise.
The forward clutch (C1) operates. Connect the input shaft to the front sun gear.
The direct clutch (C2) operates. Connect the input shaft to the planetary carrier.
2. The planetary short pinion and the planetary long pinion can not rotate itself, and the planetary gear unit
rotates clockwise as one.
3. The counter drive gear rotates clockwise for the ring gear and one.
4. The counter drive gear rotates counterclockwise.
5. The differential drive pinion rotates counterclockwise for the counter driven gear and one.
6. The differential rotates clockwise.
Engine Brake
The driving force is connected to the input shaft directory without the 1-way clutch. Therefore the engine brake
operates.
MANUAL SECOND GEAR
Manual Second Gear
Position
SolenoidClutchBrake1-Way Clutch
Shift 1Shift 2TimingC1C2C3B1B2B3F1F2
D2ndONOFFOFFONOFFOFFOFFONOFFONOFF
22ndONOFFOFFONOFFOFFONONOFFONOFF

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2006 TRANSMISSION Automatic Transaxle - Aisin (81-40LE) - Introduction (2 Of 2) - Aveo
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D - 2nd Gear
1. The input shaft rotates clockwise.
The forward clutch (C1) operates. Connect the input shaft to the front sun gear.
2. The front sun gear rotates clockwise.
3. The planetary short pinion rotates itself counterclockwise.
4. The planetary long pinion rotates itself clockwise.
5. The rear planetary sun gear is going to rotate counterclockwise.
The 2nd brake (B2) and 1-way clutch No. 1 operates, lock counterclockwise rotation of the rear planetary
sun gear.
6. The planetary carrier revolves clockwise due to reaction force of the planetary long pinion.
7. The ring gear rotates clockwise.
8. The counter drive gear rotates clockwise for the ring gear and one.
9. The counter driven gear rotates counterclockwise.
10. The differential gear drive pinion rotates counterclockwise for the counter driven gear and one.
11. The differential gear rotates clockwise.
Engine Brake
1. The counter drive gear and planetary ring gear rotates counterclockwise.
2. The planetary long pinion rotates itself counterclockwise.
3. The planetary short pinion rotates itself clockwise.
4. The rear sun gear rotates clockwise due to rotation itself counterclockwise of the planetary long pinion,
but the driving force loses due to free to 1-way clutch No. 1 (F1). Therefore the engine brake does not
operate.
MANUAL FIRST GEAR
Manual First Gear
Position
SolenoidClutchBrake1-Way Clutch
Shift 1Shift 2TimingC1C2C3B1B2B3F1F2
D1stONONOFFONOFFOFFOFFOFFOFFOFFON
11stONONOFFONOFFOFFOFFOFFONOFFON

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2006 TRANSMISSION Automatic Transaxle - Aisin (81-40LE) - Introduction (2 Of 2) - Aveo
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