automatic transaxle DAEWOO NUBIRA 2004 Service Repair Manual

AISIN AUTOMATIC TRANSAXLE 5A2 – 135
DAEWOO V–121 BL4
88. Using a suitable puller, remove the counter driven
gear outer tapered roller bearing race from the
transaxle housing.
89. Using a driver, remove the oil seal from the trans-
axle housing.
Notice : Be careful not to damage the transaxle housing
when removing the oil seal using a driver.
90. Using a suitable puller, remove the side bearing
outer race from the transaxle housing.
WARNING : USE CAUTION WHEN REMOVING SNAP
RINGS OR PERSONAL INJURY MAY RESULT.
Notice : Stop the press when the O/D brake piston is low-
ered 1–2 mm (0.039–0.078 in.) from the snap ring groove,
preventing the O/D brake piston from being deformed.
91. Using brake/clutch spring compressor DW240–020,
overdrive brake adapter DW240–050 and a driver,
remove the snap ring.
92. Remove the O/D brake return spring.

5A2 – 136IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
WARNING : USE CAUTION WHEN REMOVING COM-
PONENTS WITH COMPRESSED AIR OR PERSONAL
INJURY MAY RESULT.
Notice : Blowing off the air may cause the piston’s jump–
out.When removing the piston, hold it with your hand using
a waste cloth.
Notice : Take care not to splash ATF when air–blowing.
93. Apply 392 kPa (57 psi) of compressed air to the
transaxle rear cover to remove the O/D brake pis-
ton.
94. Remove the 2 O–rings from the O/D brake piston.
95. Remove the 2 seal rings from the transaxle rear
cover.
Notice : Do not expand the seal ring excessively.
96. Remove the 4 screw plugs and 4 O–rings from the
transaxle rear cover.

AISIN AUTOMATIC TRANSAXLE 5A2 – 137
DAEWOO V–121 BL4
MAJOR COMPONENT ASSEMBLY
Tools Required
DW240–020 Brake/Clutch Spring Compressor
DW240–050 Overdrive Brake Adapter
DW240–060–01 Brake Spring Compressor Bolt/Nut
DW240–060–02 Brake Spring Compressor Plate
DW240–070 1st / Reverse Brake Adapter
DW240–100 Counter Drive Gear Installation Adapter
DW240–130 Differential Preload Adapter
DW260–031–01 Transaxle Housing Oil Seal Installer
DW260–031–02 Transaxle Case Oil Seal Installer
DW260–041 Planetary Ring Gear Nut Removal/Installa-
tion Socket
DW240–160 Transaxle Case Outer Tapered Roller Bear-
ing Race Adapter
DW240–140 Transaxle Housing Side Bearing Outer Race
Adapter
DW240–170 Adapter Handle
Assembly Procedure
1. Install 4 new O–rings to the 4 screw plugs.
2. Install the 4 screw plugs with the O–rings to the
transaxle rear cover.
Tighten
Tighten the screw plugs to 7.4 NSm (65 lb–in).
3. Install the 2 seal rings to the transaxle rear cover.
4. Using the vernier calipers, measure the free length
of the O/D brake piston return spring together with
the spring seat.
S Standard free length : 18.99 mm (0.7476 in.)

5A2 – 138IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
5. Coat 2 new O–rings with ATF, install them to the
O/D brake piston.
6. Coat the O/D brake piston with ATF, install it to the
transaxle rear cover.
Notice : Be careful not to damage the O–rings of the O/D
brake piston.
7. Using brake/clutch spring compressor DW240–020,
overdrive brake adapter DW240–050 and a driver,
install the O/D brake return spring and snap ring to
the transaxle rear cover.
Notice : Stop the press when the O/D brake piston is low-
ered 1–2 mm (0.039
0.078 in.) from the snap ring groove,
preventing the O/D brake piston from being deformed.
8. Using transaxle housing side bearing outer race
adapter DW240–140 and adapter handle
DW240–170, install a new side bearing outer race
into the transaxle housing.

AISIN AUTOMATIC TRANSAXLE 5A2 – 139
DAEWOO V–121 BL4
9. Using transaxle housing oil seal installer
DW260–031–01 and a hammer, drive in a new
transaxle housing oil seal.
S Oil seal in depth: 3.1mm (0.122 in.)
10. Install a new outer tapered roller bearing race into
the transaxle housing.
Notice : Press
fit the outer tapered roller bearing race un-
til it contacts the transaxle housing.
11. Install the transaxle lube apply pipe and differential
gear lube apply pipe to the transaxle housing.
12. Install the No.1 transaxle apply pipe clamp to the
transaxle housing with the bolt.
Tighten
Tighten the bolt to 5.4 NSm (48 lb–in).
13. Install the oil reservoir lock plate to the transaxle
housing with the 3 bolts.
Tighten
Tighten the bolts to 5.4 NSm (48 lb–in).

5A2 – 140IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
14. Install the shim to the transaxle case.
Notice : First install a shim of the same thickness as be-
fore.
15. Install a new bearing outer race into the transaxle
case.
16. Using transaxle case oil seal installer
DW260–031–02 and a hammer, drive in a new
transaxle case oil seal.
S Oil seal in depth: 4.3 mm (0.169 in.)
17. Install the shim to the transaxle case.
Notice : First install a shim of the same thickness as be-
fore.
18. Using transaxle case outer tapered roller bearing
race adapter DW240–160 and adapter handle
DW240–170, press in a new outer tapered roller
bearing race into the transaxle case.
Notice : Press–fit the shim until it contacts the transaxle
case.
19. Install the No.1 transaxle case plate to the trans-
axle case with the bolt.
Tighten
Tighten the bolt to 9.8 NSm (87 lb–in).

AISIN AUTOMATIC TRANSAXLE 5A2 – 141
DAEWOO V–121 BL4
20. Install the differential gear to the transaxle case.
21. Install the transaxle housing and tighten the 16
bolts of the transaxle housing temporarily.
22. Tighten 8 or 9 bolts out of 16 bolts of the transaxle
housing completely.
Tighten
Tighten the bolt to 29 NSm (22 lb–ft).
23. Using differential preload adapter DW240–130, turn
the differential gear assembly right and left 2 or 3
times to allow the bearing settle.
24. Using differential preload adapter DW240–130 and
small torque wrench, measure the preload of the
differential gear.
Notice : Note down the measured valve.

5A2 – 142IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
25. Remove the transaxle housing and install the
counter driven gear.
26. Install the transaxle housing and tighten the 16
bolts of the transaxle housing temporarily.
27. Tighten the bolts of the transaxle housing in the
same manner as in step 22.
Tighten
Tighten the bolts to 29 NSm (22 lb–in).
28. Using differential preload adapter DW240–130, turn
the differential gear assembly right and left 2 or 3
times to allow the bearing settle.
29. Using differential preload adapter DW240–130 and
a small torque wrench, measure the preload of the
differential gear. From this valve deduct the valve
measured in step 23. This is the preload of the
counter driven gear.
S Preload:
New bearing: 0.33–0.76 NSm (3.21–6.77 lb–in)
Used bearing: 0.17–0.38 NSm (1.48–3.39 lb–in)

AISIN AUTOMATIC TRANSAXLE 5A2 – 143
DAEWOO V–121 BL4
If the preload of counter driven gear does not satisfy the
specification, select the adjuster shim from the table below
and remeasure the valve. Until the valve is within the spec-
ification, repeat the procedure.
Notice : When the preload is larger than the specification,
select a thinner adjuster shim. When the preload is smaller
than specification, select a thicker adjuster shim.
S Adjuster shim thickness: mm (in.)
Mark
ThicknessMarkThickness
11.70 (0.0669)G2.17 (0.0854)
21.75 (0.0689)H2.20 (0.0866)
31.80 (0.0709)K2.25 (0.0886)
41.85 (0.0728)L2.30 (0.0906)
51.90 (0.0748)M2.35 (0.0925)
61.93 (0.0760)N2.40 (0.0945)
71.96 (0.0772)P2.45 (0.0965)
A1.99 (0.0783)Q2.50 (0.0984)
B2.02 (0.0795)R2.55 (0.1004)
C2.05 (0.0807)S2.60 (0.1024)
D2.08 (0.0819)U2.65 (0.1043)
E2.11 (0.0831)W2.70(0.1063)
F2.14 (0.0843)––
30. Using the vernier calipers, measure the free length
of the 1st & reverse brake piston return spring to-
gether with spring seat.
S Standard free length: 18.053 mm (0.71075 in.)
31. Check to see if the sliding surface of the disc, plate
and flange of 1st & reverse brake are worn or burnt.
If necessary, replace them.
Notice : If the lining of the disc is peeling off or discolored,
or even if a part of the groove is defaced, replace all discs.
Notice : Before assembling new discs, soak them in ATF
for at least 15 minutes.

5A2 – 144IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
32. Coat 2 new O–rings with ATF, install them to the
1st & reverse piston.
33. Install the 1st & reverse brake piston to the trans-
axle case.
Notice : Be careful not to damage the O–rings of the 1st
& reverse brake piston.
34. Install the return spring to the transaxle case.
35. Install the 4 plates, 4 discs and flange.
S Install in order : P
D
P
D
P
D
P
D

F
(P= Plate, D= Disc, F= Flange)