oil OPEL FRONTERA 1998 Workshop Manual

7A–192 AUTOMATIC TRANSMISSION (AW30-40LE)
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Using vernier calipers, measure the distance between the
sun gear input drum and direct clutch drum as shown in the
figure.
If the values are nonstandard, check for an improper
installation.
Coat the assembled bearing and race with petroleum jelly
and install it onto the forward clutch.
19. Second coast brake piston assembly
Coat the oil seal ring with ATF and install it to the second
coast brake piston.
Install the washer, spring and piston to the piston rod.
Install the E–ring.
(1): Second coast brake piston
(2): Oil seal
(3): Piston rod
20. Snap ring
Coat two new oil seals with ATF and install them to the
piston cover.
Install the spring, second coast brake piston assembly and
piston cover to the case.
Using snap ring pliers, install the snap ring.mm (in.)
Height9.8 – 11.8
(0.386 – 0.465)
Assembled bearing and race diameter (Reference)
mm (in.)
Inside Outside
Bearing
and race33.7 (1.327) 47.8 (1.882)

AUTOMATIC TRANSMISSION (AW30-40LE) 7A–193
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Check piston stroke of second coast brake
Place a mark on the second coast brake piston rod as
shown in the figure.
Using wire gage, measure the stroke by applying the
compressed air (4–8kg/cm
2, 57–114 psi or 392–785kPa)
as shown in the figure.
If the values are nonstandard, check for an improper
installation.
21. Race
Coat the race with petroleum jelly and install it onto the
overdrive suppor t assembly.
22. OD support
Aim the bolt and oil holes of the overdrive suppor t toward
the valve hole side, and align them with the bolt hole of the
transmission case and insert.mm (in.)
Piston stroke1.5–3.0
(0.059–0.118)
Race diameter (Reference) mm (in.)
Inside Outside
Race 36.8 (1.450) 50.9 (2.004)

7A–198 AUTOMATIC TRANSMISSION (AW30-40LE)
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Install the (stepped ring) flange with the flat side of the
flange facing the disc.
Install the snap ring.
32.Race
Coat the race with petroleum jelly and install it onto the oil
pump.
33.Oil pump
Coat the O–ring with ATF and install it around the pump
body.
Place the oil pump through the input shaft, and align the
bolt holes of the pump body with the transmission case.
Hold the input shaft, and lightly press the oil pump body to
slide the oil seal rings on the stator shaft through the direct
clutch drum.
NOTE:
Do not push on the oil pump strongly or the oil seal ring
will stick to the direct clutch drum.
Install the seven bolts.
Check input shaft rotation
Make sure the input shaft rotates smoothly. Race diameter (Reference) mm (in.)
Inside Outside
Race 28.1 (1.106) 47.3 (1.862)
Nꞏm(kgꞏm / lbꞏft)
Torque 22 (2.2/16)

AUTOMATIC TRANSMISSION (AW30-40LE) 7A–199
REASSEMBLY OF MAJOR COMPONENTS (2)
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Reassembly steps
1. Second brake drum gasket
2. Accumulator piston
3. Check valve, spring
4. Valve body
5. Solenoid wiring
6. Oil strainer assembly
7. Oil pan

7A–200 AUTOMATIC TRANSMISSION (AW30-40LE)
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Important operations
1. Second brake drum gasket
Install a new brake drum gasket to the transmission case.
Individual piston operation inspection
Check for the sound of operation while injecting
compressed air into the oil hole indicated in the figure.
NOTE:
When inspecting the direct clutch, check with the C–0
accumulator piston hole closed. If there is no noise,
disassemble and check the condition of the parts.
A : C–0 Accumulator piston hole
2. Accumulator piston
Coat the O–ring with ATF and install it to the piston.
Install the five springs and four accumulator pistons to the
bore as shown in the figure. 1: OD direct clutch 5: Second coast brake
2: Direct clutch 6. Second brake
3: Forward clutch 7. First and reverse brake
4: OD brake

AUTOMATIC TRANSMISSION (AW30-40LE) 7A–203
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6. Oil strainer assembly
Install a new oil strainer assembly with gaskets.
Install the oil strainer with the gaskets to the valve body.
Tighten the four bolts.
7. Oil pan
Install magnet in pan.
Remove any packing material and be careful not to drop oil
on the contacting surfaces of the transmission case and oil
pan.
Apply liquid gasket (TB1281 or its equivalent) to the oil pan
as shown in the figure.
NOTE:
Install the oil pan as soon as the seal packing is applied.
Install and tighten the nineteen bolts.Nꞏm (kgꞏm/lbꞏin)
Torque 10 (1.0/87)
Nꞏm (kgꞏm/lbꞏin)
To r q u e 8 ( 0 . 8 / 6 9 )

7A–204 AUTOMATIC TRANSMISSION (AW30-40LE)
REASSEMBLY OF MAJOR COMPONENTS (3)
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Reassembly steps
1. Transmission assembly
2. Converter housing
3. Adapter housing
4. Oil temperature sensor
5. Elbow
6. Neutral star t switch
7. Transmission control rod and shift lever
8. Input revolution sensor
9. Output revolution sensor
10. Breather hose

11. Torque converter

AUTOMATIC TRANSMISSION (AW30-40LE) 7A–205
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Important operations
2. Converter housing
3. Adapter housing
Oil seal replacement
(1)Using a screwdriver, remove the oil seal.
(2)Apply ATF to a new oil seal lip.
(3)Using special tool, install the oil seal.
Installer:5–8840–2282–0
Remove any gasket material on the contacting surfaces of
the adapter case and transmission case.
Apply liquid gasket (TB1281–B or its equivalent) (1) and
install the apply gaskets (2) to the adapter case as shown
in the figure.
Install the adapter housing to the transmission case.
4. Oil temperature sensor
Install the oil temperature sensor to the transmission case.Nꞏm (kgꞏm/lbꞏft)
To r q u eM10 34 (3.5/25)
M12 57 (5.8/42)
Nꞏm (kgꞏm/lbꞏft)
Torque 34 (3.5/25)
Nꞏm (kgꞏm/lbꞏft)
Torque 15 (1.5/11)

7A1–6
TRANSMISSION CONTROL SYSTEM (4L30–E)
Shift Control
The transmission gear is shifted according to the shift
pattern selected by the driver. In shifting gears, the gear
ratio is controlled by the ON/ OFF signal using the shift
solenoid A and the shift solenoid B.
Band Apply Control
The band apply is controlled when in the 3–2 downshift
(engine overrun prevention) and the garage shift (shock
control).
The band apply solenoid is controlled by the signal from
the Pulse Width Modulation (PWM) to regulate the flow of
the oil.
Torque Converter Clutch Control
The clutch ON/OFF is controlled by moving the converter
clutch valve through shifting Torque Converter Clutch
(TCC) solenoid using the ON/OFF signal.
Line Pressure Control
The throttle signal allows the current signal to be sent to
the force motor. After receiving the current signal, the
force motor activates the pressure regulator valve to
regulate the line pressure.
On–Board Diagnostic System
Several malfunction displays can be stored in the
Powertrain Control Module (PCM) memory, and read out
of it afterward.The serial data lines, which are required for the testing of
the final assembly and the coupling to other electronic
modules, can be regulated by this function.
Fail Safe Mechanism
If there is a problem in the transmission system, the PCM
will go into a “backup” mode.
The vehicle can still be driven, but the driver must use the
select lever to shift gears.
Torque Management Control
The transmission control side sends the absolute spark
advance signal to the engine control side while the
transmission is being shifted. This controls the engine
spark timing in compliance with the vehicle running
condition to reduce the shocks caused by the change of
speed.
ATF Warning Control
The oil temperature sensor detects the ATF oil
temperature to control the oil temperature warning, TCC,
and the winter mode.
ABS Control (If equipped)
When the select lever is at “L” or “R” range, a signal is sent
to the ABS controller as one of the ABS control
conditions.