DAEWOO LACETTI 2004 Service Repair Manual

AISIN AUTOMATIC TRANSAXLE 5A2 – 161
DAEWOO V–121 BL4
109. Coat new 6 O–rings with ATF and install them
to the pistons.
110. Coat the 3 springs and 3 accumulator pistons
with ATF, install them to the holes.
S Accumulator spring:
Spring
Free length
Outer
diameter
mm(in.)Color
B1(O/D & 2nd
brake)47.13(1.8555)/
16.0(0.630)Pink
C1(Forward
clutch)57.90(2.2795)/
17.2(0.677)–
C2(Direct
clutch)57.20(2.2520)/
17.5(0.689)Green
111. Coat a new apply gasket with ATF, install it to
the transaxle case.
112. Coat a new brake drum gasket with ATF, install
it to the transaxle case.
113. Install the spring and check valve.

5A2 – 162IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
114. Connect the manual valve control rod to the
manual valve lever as shown in the illustration.
115. Install the valve body assembly to the trans-
axle case.
Tighten
Tighten the bolts to 11 NSm (97 lb–in).
Notice : When installing the valve body to the transaxle
case, do not let each of accumulator pistons B1,C1,and
C2 incline. When installing the valve body to the transaxle
case, do not hold the solenoids.
116. Connect the transaxle wire connector and har-
ness to the valve body assembly.
117. Connect the 5 connectors.
a. Lock–up control solenoid
b. Pressure control solenoid.
c. No.2 shift solenoid.
d. No.1 shift solenoid.
e. Timing solenoid
118. Install the TFT sensor with clamp.
Notice : Make sure that the transaxle wire does not come
out from the oil pan installation surface.
119. Install a new gasket to the oil strainer.

AISIN AUTOMATIC TRANSAXLE 5A2 – 163
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120. Install the oil strainer to the valve body with the
3 bolts.
Tighten
Tighten the bolts to 9.8 NSm (87 lb–in).
121. Install the 2 magnets in the oil pan.
122. Install a new gasket to the oil pan and install
them to the transaxle case with the 18 bolts.
Tighten
Tighten the bolts to 7 NSm (62 lb–in).
123. Install the output shaft speed (OSS) sensor.
Tighten
Tighten the bolt to 7.4 NSm (65 lb–in).

5A2 – 164IAISIN AUTOMATIC TRANSAXLE
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124. Install the No.1 breather plug.
125. Install the input shaft speed (ISS) sensor with
the bolt.
Tighten
Tighten the bolts to 5.4 NSm (48 lb–in).
126. Coat a new O–ring with ATF, install it to the
screw plug.
127. Install the screw plug to the transaxle case.
Tighten
Tighten the bolts to 7.4 NSm (65 lb–in).
128. Coat new 2 O–rings with ATF, install them to
the unions.
129. Install the 2 unions to the transaxle case.
Tighten
Tighten the unions to 25 NSm (18 lb–ft).
130. Install the TR switch onto the manual valve
lever shaft and temporarily install the 2 adjusting
bolts.
131. Install a new lock washer and nuts.
Tighten
Tighten the nuts to 12 NSm (106 lb–in).

AISIN AUTOMATIC TRANSAXLE 5A2 – 165
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132. Temporarily install the control lever.
133. Turn the lever counterclockwise until it stops,
then turn it clockwise 2 notches.
134. Remove the control lever.
135. Align the groove with neutral basic line.
136. Tighten the 2 bolts.
Tighten
Tighten the bolts to 5.4 NSm (48 lb–in).
137. Using a screwdriver, stake the nut with the lock
washer.

5A2 – 166IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
138. Install the control lever, washer and nut.
Tighten
Tighten the nut to 12 NSm (106 lb–in).
139. Install the torque converter to the transaxle.
140. Measure the installation depth of the torque
converter. Standard value: 11.1 mm
If the measured value is beyond the standard
value, readjust the torque converter within the
specified value.

AISIN AUTOMATIC TRANSAXLE 5A2 – 167
DAEWOO V–121 BL4
OIL PUMP
1. Oil Pump Body
2. Oil Pump Drive Gear
3. Oil Pump Driven Gear4. Stator Shaft
5. Bolt

5A2 – 168IAISIN AUTOMATIC TRANSAXLE
DAEWOO V–121 BL4
Disassembly Procedure
1. Turn the drive gear with 2 screwdrivers and make
sure it rotates smoothly.
Notice : Be careful not to damage the oil lip.
2. Remove the 8 bolts and stator shaft.
Notice : Be careful not to let the driver drop as it might
come off attached to the stator shaft.
3. Remove the oil pump drive gear and driven gear
from the oil pump body.
Inspection Procedure
1. Push the driven gear to one of side of the body.
Using a feeler gauge, measure the clearance.
S Standard body clearance:
0.10
0.17 mm (0.0039
0.0067 in.)
S Maximum body clearance: 0.17 mm (0.0067 in.)
If the body clearance is greater than the maxi-
mum, replace the oil pump body sub–assembly.

AISIN AUTOMATIC TRANSAXLE 5A2 – 169
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2. Measure the tip clearance between the driven gear
teeth and drive gear teeth.
S Standard tip clearance:
0.07
0.15 mm (0.0028
0.0059 in.)
S Maximum tip clearance: 0.15 mm (0.0059 in.)
If the tip clearance is greater than the maximum,
replace the oil pump body sub–assembly.
3. Using a steel straight edge and feeler gauge, mea-
sure the side clearance of both gears.
S Standard side clearance:
0.02
0.05 mm (0.0008
0.0020 in.)
S Maximum side clearance: 0.05 mm (0.0020 in.)
If the side clearance is greater than the maxi-
mum, replace the drive gear, driven gear or
pump body.
4. Using a dial indicator, measure the inside diameter
of the oil pump body bushing.
S Standard inside diameter: 38.126 mm (1.50102
in.)
S Maximum inside diameter: 38.188 mm (1.50346
in.)
If the inside diameter is greater than the maxi-
mum, replace the oil pump body sub–assembly.
5. Using a dial indicator, measure the inside diameter
of the stator shaft bushings.
S Standard inside diameter: 18.437 mm (0.72586
in.)
S Maximum inside diameter: 18.5 mm (0.728 in.)
If the inside diameter is greater than the maxi-
mum, replace the stator shaft.

5A2 – 170IAISIN AUTOMATIC TRANSAXLE
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Assembly Procedure
1. Install the oil pump drive gear and driven gear.
2. Align the stator shaft with each bolt hole.
3. Install the 8 bolts.
Tighten
Tighten the bolts to 9.8 NSm (87 lb–in).
4. Turn the drive gear with 2 screwdrivers and make
sure it rotates smoothly.
Notice : Be careful not to damage the oil lip.