atf TOYOTA SUPRA 1995 Service Repair Manual

A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONPREPARATION -
AT-12
EQUIPMENT
Feeler gaugeCheck major clearance.
Vernier calipersCheck length of second coast
brake piston rod.
Dial indicator or dial indicator with magnetic baseCheck piston stroke and play of
the output shaft.
Dial indicatorCheck inside diameter of major
bushing.
Straight edgeCheck side clearance of oil pump.
Torque wrench
Cylinder gaugeCheck inside diameter of the
transmission case rear bushing.
Ohmmeter
Voltmeter
Ammeter(A)
LUBRICANT
ItemCapacityClassification
Dry fill
Drain and refill8.2 liters (8.7 US qts, 7.2 Imp. qts)
1.9 liters (2.0 US qts, 1.7 Imp. qts)ATF Type T-II or equivalent
SSM (SPECIAL SERVICE MATERIALS)
08826-00090Seal Packing 1281,
THREE BOND 1281 or equivalent
(FIPG)Oil pan
08833-00070Adhesive 1324,
THREE BOND 1324 or equivalentTorque converter clutch housing
Extension housing
PNP switch
AT0D8-03
AT0D9-02
AT0DA-05

A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONDESCRIPTION -
AT-1
DESCRIPTION
GENERAL DESCRIPTION
The A340E automatic transmission is a 4-Speed Electronically Controlled Transmission with an intelli-
gent control. The A340E automatic transmission have the following features.

When shifting, the clutch hydraulic pressure in the transmission is controlled by the ECM to reduce
transmission shift shock.to reduce transmission shift shock.

A new type of ATF (ATF Type T-II) is used which provides improved shifting characteristics and
prevents deterioration in the ATF over time.
HINT: The A340E automatic transmission use ATF Type T-II or equivalent.
A super flow torque converter clutch is used to improve transmission efficiency.
The A340E automatic transmission is mainly composed of a torque converter clutch with lock-up
clutch, a 4-speed planetary gear unit, a hydraulic control system and an electronic control system.
To minimize the possibility of incorrect operation of the automatic transmission, a shift lock mechanism
has also been added.
AT0D4-06

A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONDESCRIPTION -
AT-2
Transmission Specifications
Type of TransmissonA340E
Type of Engine2JZ-GTE
Torque Converter Clutch Stall Torque Ratio2.000 : 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)
No.2 Brake (B
2)
1st and Reverse Brake (B
3)
O/D Brake (B
0)
2 / 2
7 / 7
5 / 5
5 / 5
7 / 7
5 / 5
Sedond Coast Brake Band Width mm (in.)40 (1.57)
ATF TypeATF Type T-II or equivalent
Capacity Liter (US qts, Imp.qts) Total
Drain and Refill8.2 (8.7 , 7.2)
1.9 (2.0 , 1.7)

A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONCOMPONENT PARTS --
AT-27
COMPONENT PARTS
GENERAL NOTES
The instructions here are organized so that you work on only one component group at a time.
This will help avoid confusion from similar-looking parts of different subassemblies being on your work-
bench at the same time.
The component groups are inspected and repaired from the converter housing side.
As much as possible, complete the inspection, repair and assembly before proceeding to the next compo-
nent group. If a component group cannot be assembled because parts are being ordered, be sure to keep
all parts of that group in a separate container while proceeding with disassembly, inspection, repair and
assembly of other component groups.
Recommended ATF:
Type T-II or equivalent
GENERAL CLEANING NOTES:
1. All disassembled parts should be washed clean and any fluid passages and holes blown through with
compressed air.
2. When using compressed air to dry parts, always aim away from yourself to prevent accidentally spray-
ing automatic transmission fluid or kerosene on your face.
3. The recommended automatic transmission fluid or kerosene should be used for cleaning.
PARTS ARRANGEMENT:
1. After cleaning, the parts should be arranged in the correct order to allow efficient inspection, repairs,
and reassembly.
2. When disassembling a valve body, be sure to keep each valve together with the corresponding spring.
3. New discs for the brakes and clutches that are to be used for replacement must be soaked in transmis-
sion fluid for at least 15 minutes before assembly.
GENERAL ASSEMBLY:
1. All oil seal rings, clutch discs, clutch plates, rotating parts, and sliding surfaces should be coated with
transmission fluid prior to reassembly.
2. All gaskets and rubber O-rings should be replaced.
3. Make sure that the ends of a snap ring are not aligned with one of the cutouts and are installed in the
groove correctly.
4. If a worn bushing is to be replaced, the subassembly containing that bushing must also be replaced.
5. Check thrust bearings and races for wear or damage. Replace if necessary.
6. Use petroleum jelly to keep parts in place.
AT0DD-03

A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONOIL PUMP -
AT-30
8. REMOVE OIL SEAL
(a) Pry off the oil seal with a screwdriver.
(b) Using SST, install a new oil seal.
The oil seal end should be flush with the outer edge of the
pump body.
SST 09350-30020 (09351-32140)
(c) Coat the oil seal lip with MP grease.
OIL PUMP BUSHING CHECK
1. 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.
2. CHECK STATOR SHAFT BUSHING
Using a dial indicator, measure the inside diameter of the
stator shaft bushing.
Maximum inside diameter (Front):
21.58 mm (0.8496 in.)
Maximum inside diameter (Rear):
27.08 mm (1.0661 in.)
If the inside diameter is greater than maximum, replace
the stator shaft.
OIL PUMP ASSEMBLY
1. 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.
AT0DG-03
AT0DH-05

A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONOIL PUMP -
AT-31
2. INSTALL STATOR SHAFT TO OIL 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)
3. INSTALL OIL SEAL RINGS
(a) Coat the 2 oil seal rings with ATF.
(b) Install the 2 oil seal rings to the stator shaft groove, then
snug them down by squeezing their ends together.
NOTICE: Do not spread the ring ends too much.
HINT: After installing the oil seal rings, check that they ro-
tate smoothly.
4. CHECK OIL PUMP DRIVE GEAR ROTATION
Make sure the drive gear rotates smoothly.

A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONSECOND COAST BRAKE -
AT-33
(c) Remove the compression spring, retainer and piston rod.
SECOND COAST BRAKE BAND
INSPECTION
INSPECT BRAKE BAND
If the lining of the brake band is peeling off or discolored,
or even if parts of the printed numbers are defaced, re-
place the brake band.
HINT: Before assembling the new band, soak it in ATF for
at least 15 minutes.
SECOND COAST BRAKE PISTON
ASSEMBLY
1. SELECT PISTON ROD
If the band is OK with piston rod stroke not within the stan-
dard value, select a new piston rod.
HINT: There are 5 different piston rod lengths.
Piston rod length:
70.7 mm (2.783 in.)
71.4 mm (2.811 in.)
72.2 mm (2.843 in.)
72.9 mm (2.870 in.)
73.7 mm (2.902 in.)
2. ASSEMBLE SECOND COAST BRAKE PISTON
(a) Install the retainer, compression spring and piston to the
piston rod.
(b) Firmly hold down the piston, then compress the compres-
sion spring.
(c) Install the E-ring.
AT0DL-04
AT0DM-04

A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONSECOND COAST BRAKE -
AT-34
3. INSTALL SECOND COAST BRAKE PISTON OIL SEAL
RING
(a) Coat the oil seal ring with ATF.
(b) Install the oil seal ring to the piston groove, then snug it
down by squeezing its ends together.
NOTICE: Do not spread the ring ends more than necessary.

A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONOVERDRIVE DIRECT CLUTCH -
AT-38
9. REMOVE ONE-WAY CLUTCH FROM OUTER RACE
OVERDRIVE PLANETARY GEAR AND
OVERDRIVE DIRECT CLUTCH INSPECTION
1. INSPECT DISC AND FLANGE
Check to see if the sliding surface of the disc, plate and
flange are worn or burnt. If necessary, replace them.
HINT:

If the lining of the disc is peeling off or discolored, or
even if a part of the printed numbers are defaced, re-
place all discs.

Before assembling new discs, soak them in ATF for
at least 15 minutes.
2. CHECK OVERDRIVE DIRECT CLUTCH PISTON
(a) Check that the check ball is free by shaking the piston.
(b) Check that the valve does not leak by applying low-pres-
sure compressed air.
3. CHECK OVERDRIVE DIRECT CLUTCH RETURN
SPRING
Check the spring free length together with the spring seat.
Standard free length:
15.8 mm (0.622 in.)
4. CHECK OVERDRIVE DIRECT CLUTCH DRUM BUSH-
INGS
Using a dial indicator, measure the inside diameter of the
clutch drum bushings.
Maximum inside diameter:
27.11 mm (1.0673 in.)
If the inside diameter is greater than the maximum, re-
place the clutch drum.
AT0DQ-04

A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONOVERDRIVE DIRECT CLUTCH -
AT-40
(d) Install the retaining plate.
(e) Using a screwdriver, install the snap ring.
2. INSTALL RING GEAR FLANGE TO OVERDRIVE
PLANETARY RING GEAR
(a) Install the ring gear flange.
(b) Using a screwdriver, install the snap ring.
3. INSTALL OVERDRIVE DIRECT CLUTCH PISTON
(a) Coat new O-rings with ATF and install them on the O/D
direct clutch piston.
(b) Being careful not to damage the O-rings, press the direct
clutch piston into the clutch drum with both hands.
4. INSTALL PISTON RETURN SPRING
(a) Install the piston return spring to the piston.