TOYOTA SUPRA 1995 Service Repair Manual

A340E(Others) AUTOMATIC TRANSMISSIONFORWARD CLUTCH -
AT-64
3. CHECK PACK CLEARANCE OF FORWARD CLUTCH
Using SST and a dial indicator, measure the forward
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)
Pack clearance:
0.5-0.9 mm (0.020-0.035 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 for-
ward clutch drum.
(b) Remove the flange, plates and discs.
5. REMOVE CUSHION PLATE
6. 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.
7. REMOVE FORWARD CLUTCH PISTON
(a) Place the forward clutch drum onto the O/D support.
(b) Hold the forward clutch piston with hand, apply com-
pressed air to the O/D support to remove the forward
clutch piston.
(c) Remove the forward clutch piston.
(d) Remove the 2 O-rings from the piston.

A340E(Others) AUTOMATIC TRANSMISSIONFORWARD CLUTCH -
AT-65
8. REMOVE O-RING FROM FORWARD CLUTCH DRUM
9. REMOVE 3 OIL SEAL RINGS
FORWARD CLUTCH INSPECTION
1. INSPECT DISC, PLATE 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 FORWARD 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.
AT05R-06

A340E(Others) AUTOMATIC TRANSMISSIONFORWARD CLUTCH -
AT-66
3. CHECK FORWARD CLUTCH DRUM BUSHING
Using a dial indicator, measure the inside diameter of the
forward clutch drum bushing.
Maximum inside diameter:
24.08 mm (0.9480 in.)
If the inside diameter is greater than the maximum, re-
place the forward clutch drum.
FORWARD CLUTCH ASSEMBLY
1. INSTALL OIL SEAL RINGS
(a) Coat the 3 oil seal rings with ATF.
(b) Install the 3 oil seal rings to the forward clutch drum
groove, then snug them down by squeezing their ends to-
gether.
NOTICE: Do not spread the ring ends more than necessary.
HINT: After installing the oil seal rings, check that they ro-
tate smoothly.
2. INSTALL NEW O-RING TO FORWARD CLUTCH DRUM
Coat a new O-ring with ATF and install it on the forward
clutch drum.
3. INSTALL FORWARD CLUTCH PISTON
(a) Coat new O-rings with ATF and install them on the for-
ward clutch piston with a screwdriver.
(b) Being careful not to damage the O-rings, press the clutch
piston into the forward clutch drum with both hands.
4. INSTALL PISTON RETURN SPRING
(a) Install the piston return spring.
AT05S-08

A340E(Others) AUTOMATIC TRANSMISSIONFORWARD CLUTCH -
AT-67
(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 snap ring pliers. Be sure the end
gap of the snap ring is not aligned with the spring retainer
claw.
5. INSTALL CUSHION PLATE ROUNDED END DOWN
6. INSTALL PLATES, DISCS AND FLANGE
(a) Install in order: P = Plate D = Disc
P-D-P-D-P-D-P-D-P-D
(b) And then install the flange, the rounded edge facing
downward.
HINT: There are 8 different thicknesses for the flange.
Flange thickness
mm (in.)
No.ThicknessNo.Thickness
613.0 (0.118)443.8 (0.150)
603.2 (0.126)424.0 (0.157)
453.4 (0.134)634.2 (0.165)
623.6 (0.142)644.4 (0.173)
(c) Install the snap ring with a screwdriver. Be sure the end
gap of the snap ring is not aligned with the cutout portion
of the forward clutch drum.

A340E(Others) AUTOMATIC TRANSMISSIONFORWARD CLUTCH -
AT-68
7. CHECK PACK CLEARANCE OF FORWARD CLUTCH
Using SST and a dial indicator, measure the forward
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)
Pack clearance:
0.5-0.9 mm (0.020-0.035 in.)
If the values are non-standard, inspect the discs.
8. INSTALL DIRECT CLUTCH TO FORWARD CLUTCH
(a) Make sure that the thrust washer is installed to the direct
clutch drum.
(b) Align the flukes of discs in the direct clutch.
(c) Install the direct clutch onto the forward clutch.
(d) Check that the distance from the direct clutch end to the
forward clutch end is 71.2 mm (2.803 in.).
If the distance is less than the above value, parts may
have been assembled incorrectly, check and reassemble
again.

A340E(Others) AUTOMATIC TRANSMISSIONSECOND COAST BRAKE -
AT-69
SECOND COAST BRAKE
COMPONENTS
SECOND COAST BRAKE DISASSEMBLY
1. REMOVE SECOND COAST BRAKE PISTON OIL SEAL
RING
Remove the oil seal ring from the piston.
2. REMOVE SECOND COAST BRAKE PISTON ROD
(a) Firmly hold down the piston, then compress the compres-
sion spring.
(b) Using needle nose-pliers, remove the E-ring.
AX0AG-0A
AX0AH-0A

A340E(Others) AUTOMATIC TRANSMISSIONSECOND COAST BRAKE -
AT-70
(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 part of the printed numbers are defaced, replace
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 stroke not within the standard
value, select a new piston rod.
There are 2 different lengths of piston rod.
Piston rod length:
71.4 mm (2.811 in.)
72.9 mm (2.870 in.)
2. INSTALL PISTON ROD
(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) Using needle-nose pliers, install the E-ring.
AT0SN-01
AX0AK-0D

A340E(Others) AUTOMATIC TRANSMISSIONSECOND COAST BRAKE -
AT-71
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(Others) AUTOMATIC TRANSMISSIONFRONT PLANETARY GEAR -
AT-72
FRONT PLANETARY GEAR
COMPONENTS
FRONT PLANETARY GEAR INSPECTION
1. CHECK FRONT PLANETARY RING GEAR BUSHING
Using a dial indicator, measure the inside diameter of the
planetary ring gear bushing.
Maximum inside diameter:
24.08 mm (0.9480 in.)
If the inside diameter is greater than the maximum, re-
place the planetary ring gear.
2. MEASURE PLANETARY PINION GEAR THRUST
CLEARANCE
Using a feeler gauge, measure the planetary pinion gear
thrust clearance.
Standard clearance:
0.20-0.60 mm (0.0079-0.0236 in.)
Maximum clearance:
1.00 mm (0.0394 in.)
If the clearance is greater than the maximum, replace the
planetary gear assembly.
AT05T-03
AT05U-04

A340E(Others) AUTOMATIC TRANSMISSIONPLANETARY SUN GEAR -
AT-73
PLANETARY SUN GEAR
COMPONENTS
PLANETARY SUN GEAR AND NO.1
ONE-W AY CLUTCH DISASSEMBLY
1. CHECK OPERATION OF NO.1 ONE-WAY CLUTCH
Hold the planetary sun gear and turn the second brake
hub. Check that the second brake hub must be able to
turn freely clockwise and locks counterclockwise.
2. REMOVE ASSEMBLED NO.1 ONE- WAY CLUTCH
AND SECOND BRAKE HUB
AT05V-03
AT05W-04