1995 TOYOTA SUPRA torque

A340E(Others) AUTOMATIC TRANSMISSIONDESCRIPTION -
AT-2
GENERAL SPECIFICATIONS
TRUCK, 4 RUNNER, T100:
Type of TransmissionA340E
Type of Engine3VZ-E
Torque Converter Clutch Stall Torque RatioC&C, T100 2.0 : 1
Others 2.15 : 1
Lock-up MechanismEquipped
Gear Ratio 1st Gear
2nd Gear
3rd Gear
O/D Gear
Reverse Gear2.804
1.531
1.000
0.705
2.393
Number of Discs and Plates (Disc and Plate)
O/D Direct Clutch (C
0)
Forward Clutch (C
1)
Direct Clutch (C
2)
2nd Brake (B
2)
1st and Reverse Brake (B
3)
O/D Brake (B
0)
2 / 2
5 / 5
4 / 4
5 / 5
6 / 6
4 / 3
B1 Band Width mm (in.)40 (1.57)
ATF TypeATF DEXRON® II
Capacity (US qts, Imp.qts) Total
Drain and Refill7.2 (7.6, 6.3)
1.6 (1.7, 1.4)
SUPRA:
Type of TransmissionA340E
Type of Engine2JZ-GE
Torque Converter Clutch Stall Torque Ratio1.9 : 1
Lock-up MechanismEquipped
Gear Ratio 1st Gear
2nd Gear
3rd Gear
O/D Gear
Reverse Gear2.804
1.531
1.000
0.705
2.393
Number of Discs and Plates (Disc and Plate)
O/D Direct Clutch (C
0)
Forward Clutch (C
1)
Direct Clutch (C
2)
2nd Brake (B
2)
1st and Reverse Brake (B
3)
O/D Brake (B
0)
2 / 2
5 / 5
4 / 4
5 / 5
6 / 6
4 / 3
B1 Band Width mm (in.)40 (1.57)
ATF TypeATF DEXRON® II
Capacity (US qts, Imp.qts) Total
Drain and Refill7.2 (7.6, 6.3)
1.6 (1.7, 1.4)

A340E(Others) AUTOMATIC TRANSMISSIONDESCRIPTION -
AT-3
PREVIA:
Type of TransmissionA340E
Type of Engine2TZ-FZE
Torque Converter Clutch Stall Torque Ratio2.0 : 1
Lock-up MechanismEquipped
Gear Ratio 1st Gear
2nd Gear
3rd Gear
O/D Gear
Reverse Gear2.804
1.531
1.000
0.705
2.393
Number of Discs and Plates (Disc and Plate)
O/D Direct Clutch (C
0)
Forward Clutch (C
1)
Direct Clutch (C
2)
2nd Brake (B
2)
1st and Reverse Brake (B
3)
O/D Brake (B
0)
2 / 2
5 / 5
4 / 4
5 / 5
6 / 6
3 / 2
B1 Band Width mm (in.)40 (1.57)
ATF TypeATF DEXRON® II
Capacity (US qts, Imp.qts) Total
Drain and Refill7.2 (7.6, 6.3)
1.6 (1.7, 1.4)

A340E(Others) AUTOMATIC TRANSMISSIONOPERATION -
AT-8
3. HYDRAULIC CONTROL SYSTEM
The hydraulic control system is composed of the oil pump, the valve body, the solenoid valves, and the
clutches and brakes, as well as the fluid passages which connect all of these components. Based on
the hydraulic pressure created by the oil pump, the hydraulic control system governs the hydraulic pres-
sure acting on the torque converter clutch, clutches and brakes in accordance with the vehicle driving
conditions.
There are 3 solenoid valves on the valve body.
The No.1 and No.2 solenoid valves are turned on and off by signals from the ECM to operate the shift
valves and change the gear shift position.
The lock-up solenoid valve is operated by signals from the ECM to engage or disengage the lock-up
clutch of the torque converter clutch.

LINE PRESSURE
Line pressure is the most basic and important pressure used in the automatic transmission, because
it is used to operate all of the clutches and brakes in the transmission.
If the primary regulator valve does not operate correctly, line pressure will be either too high or too low.
Line pressure that is too high will lead to shifting shock and consequent engine power loss due to the
greater effort required of the oil pump; line pressure that is too low will cause slippage of clutches and
brakes, which will, in extreme cases, prevent the vehicle from moving. Therefore, if either of these prob-
lems are noted, the line pressure should be measured to see if it is within specification.

THROTTLE PRESSURE
Throttle pressure is always kept in accordance with the opening angle of the engine throttle valve. This
throttle pressure acts on the primary regulator valve and, the line pressure is regulated according to
the throttle valve opening.
In the hydraulically controlled automatic transmission, throttle pressure is used for regulating line pres-
sure and as signal pressure for up-shift and down-shift of the transmission. In the electronically con-
trolled transmission, however, throttle pressure is used only for regulating line pressure. Consequently,
improper adjustment of the transmission throttle cable may result in a line pressure that is too high or
too low. This, in turn, will lead to shifting shock or clutch and brake slippage.

A340E(Others) AUTOMATIC TRANSMISSIONOIL PUMP -
AT-39
OIL PUMP
COMPONENTS
OIL PUMP DISASSEMBLY
1. USE TORQUE CONVERTER CLUTCH AS WORK
STAND
Place the oil pump body on the torque converter clutch.
2. REMOVE OIL SEAL RINGS
Remove the 2 oil seal rings from the stator shaft back
side.
AX0AL-0A
AT0FV-02

A340E(Others) AUTOMATIC TRANSMISSIONOIL PUMP -
AT-40
3. REMOVE THRUST WASHER FROM STATOR SHAFT
BACK SIDE
4. REMOVE STATOR SHAFT
(a) Remove the 13 bolts, and then remove the stator shaft
from the oil pump body.
(b) Remove the oil pump body from the torque converter
clutch.
5. REMOVE OIL PUMP DRIVE GEAR AND DRIVEN GEAR
6. REMOVE OIL SEAL
Pry off the oil seal with a screwdriver.
OIL PUMP INSPECTION
1. CHECK BODY CLEARANCE OF DRIVEN GEAR
Push the driven gear to one side of the body.
Using a feeler gauge, measure the clearance.
Standard body clearance:
0.07-0.15 mm (0.0028-0.0059 in.)
Maximum body clearance:
0.3 mm (0.012 in.)
AX0AN-0C

A340E(Others) AUTOMATIC TRANSMISSIONOIL PUMP -
AT-42
4. CHECK OIL PUMP BODY BUSHING
Using a dial indicator, measure the inside diameter of the
oil pump body bushing.
Maximum inside diameter:
38.19 mm (1.5035 in.)
If the inside diameter is greater than the maximum, re-
place the oil pump body.
5. CHECK STATOR SHAFT BUSHINGS
Using a dial indicator, measure the inside diameter of the
stator shaft bushing.
Maximum inside diameter:
Front side 21.58 mm (0.8496 in.)
Rear side 27.08 mm (1.0661 in.)
If the inside diameter is greater than the maximum, re-
place the stator shaft.
OIL PUMP ASSEMBLY
1. INSTALL FRONT OIL SEAL
(a) Using SST and a hammer, install a new oil seal. The seal
end should be flush with the outer edge of the pump body.
SST 09350-30020 (09351-32140)
(b) Coat the oil seal lip with MP grease.
2. INSTALL DRIVEN GEAR AND DRIVE GEAR TO OIL
PUMP BODY
(a) Place the oil pump body on the torque converter clutch.
(b) Coat the driven gear and drive gear with ATF.
(c) Install the driven gear and drive gear.
3. INSTALL STATOR SHAFT TO PUMP BODY
(a) Align the stator shaft with each bolt hole.
(b) Tighten the 13 bolts.
Torque: 10 N´m (100 kgf´cm, 7 ft´lbf)
AX0AP-0C

A340E(Others) AUTOMATIC TRANSMISSIONOVERDRIVE DIRECT CLUTCH -
AT-45
3. CHECK PISTON STROKE OF OVERDRIVE DIRECT
CLUTCH
(a) Place the oil pump onto the torque converter clutch, and
then place the O/D direct clutch assembly onto the oil
pump.
(b) Using SST and a dial indicator, measure the O/D direct
clutch piston stroke while applying and releasing com-
pressed air (392-785 kPa, 4-8 kgf/cm
2, 57-114 psi).
SST 09350-30020 (09350-06120)
Piston stroke:
SUPRA:
1.45-1.70 mm (0.0571-0.0669 in.)
OTHERS:
1.85-2.15 mm (0.0728-0.0846 in.)
If the values are non-standard, inspect the discs.
4. REMOVE FLANGE, PLATES AND DISCS
(a) Using a screwdriver, remove the snap ring from the O/D
direct clutch drum.
(b) Remove the flange, plates and discs.
5. REMOVE PISTON RETURN SPRING
(a) Place SST on the spring retainer and compress the return
spring with a shop press.
SST 09350-30020 (09350-07040)
(b) Using snap ring pliers, remove the snap ring.
(c) Remove the piston return spring.
6. REMOVE OVERDRIVE DIRECT CLUTCH PISTON
(a) Place the oil pump onto the torque converter clutch and
then place the O/D direct clutch onto the oil pump.
(b) Hold the O/D direct clutch piston with hand, apply com-
pressed air to the oil pump to remove the O/D direct clutch
piston.
(c) Remove the O/D direct clutch piston.
(d) Remove the 2 O-rings from the piston.

A340E(Others) AUTOMATIC TRANSMISSIONOVERDRIVE DIRECT CLUTCH -
AT-51
(b) Place SST on the spring retainer, and compress the re-
turn spring with a shop press.
SST 09350-30020 (09350-07040)
(c) Install the snap ring with a screwdriver. Be sure the end
gap of the snap ring is not aligned with the spring retainer
claw.
7. INSTALL PLATES, DISCS AND FLANGE
(a) Install the plates and discs.
Install in order: P = Plate D = Disc
P-D-P-D
(b) Install the flange, the flat end facing downward.
(c) Using a screwdriver, install the snap ring.
8. CHECK PISTON STROKE OF OVERDRIVE DIRECT
CLUTCH
(a) Place the oil pump onto the torque converter clutch, and
then place the O/D direct clutch assembly onto the oil
pump.