DAEWOO LACETTI 2004 Service Repair Manual

AISIN AUTOMATIC TRANSAXLE 5A2 – 201
DAEWOO V–121 BL4
Upper Valve Body
1. Sleeve
2. Key
3. Spring
4. Plunger
5. Lock–up Control Valve
6. Plug
7. Key
8. Secondary Regulator Valve
9. Spring
10. No.2 Check Valve
11. Key
12. Ball
13. No.1 Check Valve
14. Reverse Control Valve
15. Spring
16. Key17. Plug
18. Spring
19. 3–4 Shift Valve
20. Spring
21. O–ring
22. Reverse Clutch Accumulator Piston
23. O–ring
24. Plunger
25. 3–4 Shift Timing Valve
26. Spring
27. O–ring
28. 2nd Brake Accumulator Piston
29. O–ring
30. Spring
31. Upper Valve Body Cover

5A2 – 202IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
Upper Valve Body Spring
S During reassembly, please refer to the spring specifications below to help you do discriminate between the differ-
ent springs.
MarkName (Color)Free length/Outer diameter mm
(in.)Total number of
coils
A3–4 shift timing valve (Pink)28.41 (1.1185) / 6.4 (0.252)10.49
B2nd brake accumulator piston,(None)
Inner45.90 (1.8071) / 10.5 (0.413)16.9
C2nd brake accumulator piston,(White)
Outer69.00 (2.7165) / 16.0 (0.630)15.1
DReverse clutch accumulator piston
(None)65.40(2.5748) / 17.0 (0.669)13.7
E3–4 shift valve (Red)25.50 (1.0039) / 9.73 (0.3831)7.75
FSecondary regulator valve (White)34.56 (1.3606) / 8.8 (0.346)12.27
GReverse control valve (None)25.58 (1.0071) / 8.64 (0.3402)8.75
HLock up control valve (Yellow)20.87 (0.8217) / 5.55 (0.2185)11.15

AISIN AUTOMATIC TRANSAXLE 5A2 – 203
DAEWOO V–121 BL4
Upper Valve Body Key
MarkRetainerHeight/Width/Thickness mm (in.)
ACheck valve11.5 (0.453) / 5.0 (0.197) / 3.2 (0.126)
BSecondary regulator valve16.0 (0.630) / 5.0 (0.197) / 3.2 (0.126)
CLock up control valve16.0 (0.630) / 5.0 (0.197) / 3.2 (0.126)
DReverse control valve11.5 (0.453) / 5.0 (0.197) / 3.2 (0.126)

5A2 – 204IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
Upper Valve Body Check Ball
Check ball mm(in).5.535 (0.21791)

AISIN AUTOMATIC TRANSAXLE 5A2 – 205
DAEWOO V–121 BL4
Lower Valve Body
1. Key
2. Spring
3. 4–3 Shift Timing Valve
4. Key
5. Plug
6. 2–3 Shift Valve
7. Spring
8. Key
9. Plug
10. 1–2 Shift Valve
11. Spring
12. Key
13. Sleeve
14. Plunger15. Spring
16. Primary Regulator Valve
17. Key
18. Sleeve
19. Plunger
20. Spring
21. Lock–up Relay Valve
22. Key
23. Spring
24. Solenoid Modulator Valve
25. Solenoid Oil Strainer
26. Lower Modulator Valve
27. Spring
28. Key

5A2 – 206IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
Lower Valve Body Spring
MarkName (Color)Free length/Outer diameter mm
(in.)Total number of
coils
A4–3 shift timing valve No.1 (None)33.95 (1.3366) / 8.2 (0.323)12.5
BLow modulator valve (None)30.43 (1.1980) / 7.75 (0.3051)12.72
C2–3 shift valve (Red)25.50 (1.0039) / 9.73 (8.1694)7.75
D1–2 shift valve (Red)25.50 (1.0039) / 9.73 (8.1694)7.75
EPrimary regulator valve (None)50.53 (1.9894) / 13.6 (0.535)11.07
FLock up relay valve (Red)23.42 (0.9221) / 5.86 (0.2307)12.25
GSolenoid modulator valve (Yellow)32.13 (1.2650) / 8.0 (0.315)15.75

AISIN AUTOMATIC TRANSAXLE 5A2 – 207
DAEWOO V–121 BL4
Lower Valve Body Key
MarkRetainerHeight/Width/Thickness mm (in.)
A4–3 shift timing valve No.136.0 (1.417) / 5.0 (0.197) / 3.2 (0.126)
BLow modulator valve24.0 (0.945) / 5.0 (0.197) / 3.2 (0.126)
C2–3 shift valve10.0 (0.394) / 5.0 (0.197) / 3.2 (0.126)
D1–2 shift valve10.0 (0.394) / 5.0 (0.197) / 3.2 (0.126)
EPrimary regulator valve9.8 (0.386) / 5.2 (0.205) / 3.2 (0.126)
FLock up relay valve16.0 (0.630) / 5.0 (0.197) / 3.2 (0.126)
GSolenoid modulator valve24.0 (0.945) / 5.0 (0.197) / 3.2 (0.126)

5A2 – 208IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
DIFFERENTIAL CASE
1. Differential Pinion Thrust Washer
2. Differential Pinion Gear
3. Differential Side Gear Thrust Washer
4. Differential Side Gear
5. Pin
6. Differential Pinion Shaft
7. Oil Seal
8. Side Bearing Outer Race9. Tapered Roller Bearing
10. Differential Case
11. Differential Ring Gear
12. Tapered Roller Bearing
13. Side Bearing Outer Race
14. Shim
15. Oil Seal

AISIN AUTOMATIC TRANSAXLE 5A2 – 209
DAEWOO V–121 BL4
Tools Required
DW260–031–01 Transaxle Housing Oil Seal Installer
DW260–031–02 Transaxle Case Oil Seal Installer
DW240–150 Transaxle Case Side Bearing Outer Race
Adapter
DW240–140 Transaxle Housing Side Bearing Outer Race
Adapter
DW240–170 Adapter Handle
Disassembly Procedure
1. Place the matchmarks on the ring gear and differ-
ential case.
2. Remove the 8 bolts.
3. Using a plastic hammer, tap on the ring gear to re-
move it from the case.
4. Using a suitable puller, remove the tapered roller
bearing of transaxle housing side.

5A2 – 210IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
5. Using a suitable puller, remove the tapered roller
bearing of transaxle case side.
6. Using a pin punch and hammer, drive out the pin
from the ring gear side.
7. Remove the differential pinion shaft from the case.
8. Remove the 2 differential pinion gears, 2 differential
side gears, 2 differential pinion thrust washers and
2 differential side gear thrust washers.