2004 DAEWOO LACETTI brake

5A2 – 132IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
73. Using a screwdriver, remove the oil seal.
74. Using brake spring compressor bolt/nut
DW240–060–01, 1st & reverse brake adapter
DW240–070 and planetary ring gear remover
DW240–090, remove the planetary ring gear.
75. Install the 3 bolts to the counter drive gear.
S Bolt (M6) : L= 40–80mm, Pich = 1.0mm
76. Rotate 3 bolts in order and remove the counter
drive gear and planetary ring gear.
WARNING : USE CAUTION WHEN REMOVING SNAP
RINGS OR PERSONAL INJURY MAY RESULT.
77. Using brake spring compressor bolt/nut
DW240–060–01 and 1st & reverse brake adapter
DW240–070, remove the snap ring of 1st & reverse
brake.

AISIN AUTOMATIC TRANSAXLE 5A2 – 133
DAEWOO V–121 BL4
78. Remove the flange, 4 discs, 4 plates and return
spring.
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 us-
ing a waste cloth.
Notice : Take care not to splash ATF when air–blowing
79. Apply 392 kPa (57 psi) of compressed air to the
transaxle case to remove the 1st & reverse brake
piston.
80. Remove the 2 O–rings from the 1st & reverse
brake piston.
81. Remove the bolt and No.1 transaxle case plate
from the transaxle case.

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 – 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)