Brake DAEWOO LACETTI 2004 Service Repair Manual

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)

AISIN AUTOMATIC TRANSAXLE 5A2 – 145
DAEWOO V–121 BL4
36. Using 1st & reverse brake adapter DW240–070 and
brake spring compressor bolt/nut DW240–060–01,
install the snap ring.
Notice : Make sure that the snap ring is installed in the
groove of the transaxle case correctly.
37. Using a dial indicator, measure the 1st & reverse
brake piston stroke while applying and releasing
392–785 kPa (57–114 psi) of compressed air.
Notice : If the piston stroke is non–standard, inspect the
discs, plates and flange. Piston stroke 0.6
1.3 mm (0.024

0.051 in.)
38. Using counter drive gear installation adapter
DW240–100, brake spring compressor bolt/nut
DW240–060–01 and brake spring compressor plate
DW240–060–02, install the counter drive gear.
Notice : Be careful not to apply excessive force to the
transaxle case.
39. Coat a new oil seal with ATF.
40. Install the oil seal to the transaxle case.
S Oil seal in depth:
A: 1 ± 0.25 mm (0.39 ± 0.0098 in.)

5A2 – 148IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
50. Install the parking lock pawl bracket with the 2
bolts.
Tighten
Tighten the bolts to 7.4 NSm (65 lb–in).
51. Using counter drive gear installation adapter
DW240–100 and brake spring compressor bolt/nut
DW240–060–01,install the planetary ring gear.
S Before installing the planetary ring gear, be sure
to replace the planetary ring flange of the plane-
tary ring gear with a new one.
52. Fix the counter drive gear with parking lock pawl.
53. Using planetary ring gear nut removal/installation
socket DW260–041, install a new nut.
Tighten
Tighten the nut to 9.8 NSm (87 lb–in).

5A2 – 150IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
59. Check that the planetary gear turns freely counter-
clockwise and locks clockwise.
60. Install the anti–rattle clip in the place shown in the
illustration (the space between the No.2 one–way
clutch outer race and transaxle case), push the
anti–rattle clip in until you hear the ”click”.
61. Using vernier calipers, measure the free length of
the 2nd brake piston return spring together with
spring seat.
S Standard free length: 15.85 mm (0.6240 in.).
62. Check to see if the sliding surface of the disc, plate
and flange of 2nd brake are worn or burnt. If neces-
sary, 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.

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63. Install the flange, 2 discs and 2 plates.
S Install in order : F
D
P
D
P
(D = Disc, P = Plate, F = Flange)
64. Install the 2nd brake return spring.
Notice : Make sure that the snap ring is installed in the
groove of the transaxle case correctly.
65. Coat 2 new O–rings with ATF, install them to the
2nd brake piston.
66. Install the 2nd brake piston into the 2nd brake
clutch cylinder.
Notice : Be careful not to damage the O–rings.
67. Install the 2nd brake clutch cylinder to the transaxle
case.

5A2 – 152IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
68. Using brake spring compressor bolt / nut
DW240–060–01 and 2nd brake adapter
DW240–080, compress the 2nd brake piston return
spring.
69. Using a screwdriver, install the snap ring.
Notice : Make sure that the snap ring is installed in the
groove of the transaxle case correctly.
70. Coat the thrust bearing race with petroleum jelly
and install it onto the front planetary sun gear.
S Race:
Inner diameter: 19.3 mm (0.760 in.)
Outer diameter : 29.0 mm (1.142 in.)
71. Install the front planetary sun gear to the transaxle
case.
72. Install the thrust washer and one–way clutch as-
sembly to the rear planetary sun gear.

AISIN AUTOMATIC TRANSAXLE 5A2 – 155
DAEWOO V–121 BL4
81. Check to see if the sliding surface of the disc, plate
and flange of 2nd coast & O/D 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 printed mark is defaced, replace all
discs.
Notice : Before assembly new discs, soak them in ATF for
at least 15 minutes.
82. Using a screwdriver, install the snap ring to the
transaxle case.
Notice : Make sure that the snap ring is installed in the
groove of the transaxle case correctly.
83. Install the flange, 2 discs and 2 plates to the trans-
axle case.
S Install in order: P
D
P
D
F
(P = Plate, D = Disc, F = Flange)
84. Clean the connected part the transaxle case and
transaxle rear cover.
85. As shown in the illustration, place a straight edge
on the transaxle case and measure the distance
between the 2nd coast & O/D brake flange and
straight edge using vernier calipers. (Dimension A).