TOYOTA SUPRA 1995 Service Repair Manual

A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONFORWARD CLUTCH -
AT-53
3. REMOVE FLANGE, PLATES AND DISCS
(a) Using a screwdriver, remove the snap ring from the for-
ward clutch drum.
(b) Remove the flange, 7 plates and 7 discs.
4. 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 SST, remove the snap ring.
SST 09350-30020 (09350-07070)
(c) Remove the piston return spring.
5. 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.
6. REMOVE 2 O-RINGS FROM PISTON

A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONFORWARD CLUTCH -
AT-54
7. REMOVE 3 OIL SEAL RINGS FROM FORWARD
CLUTCH
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.
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.
AT0E2-04

A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONFORWARD CLUTCH -
AT-55
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 FORWARD CLUTCH PISTON
(a) Coat 2 new O-rings with AFT and install them on the for-
ward clutch piston.
(b) Being careful not to damage the O-rings, press the clutch
piston into the forward clutch drum with both hands.
3. INSTALL PISTON RETURN SPRING
(a) Install the piston return spring.
(b) Place SST on the spring retainer, and compress the re-
turn spring with a shop press.
SST 09350-30020 (09350-07040)
(c) Using SST, install the snap ring. Be sure the end gap of
the snap ring is not aligned with the spring retainer claw.
SST 09350-30020 (09350-07070)
AT0E3-04

A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONFORWARD CLUTCH -
AT-56
4. INSTALL PLATES, DISCS AND FLANGE
(a) Install the plate and discs.
Install in order: P = Plate D = Disc
P-D-P-D-P-D-P-D-P-D-P-D-P-D
(b) Then install the flange, the rounded edge facing down-
ward.
HINT: There are 6 different flange thicknesses.
Flange thickness
mm (in.)
No.ThicknessNo.Thickness
424.0 (0.157)453.4 (0.134)
443.8 (0.150)603.2 (0.126)
623.6 (0.142)613.0 (0.118)
(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.
5. CHECK PACK CLEARANCE OF FORWARD CLUTCH
Using SST and a dial indicator, measure the forward
clutch pack clearance while applying and releasing com-
pressed air (186-206 kPa, 1.9-2.1 kgf/cm
2, 27-30 psi).
SST 09350-30020 (09350-06120)
Pack clearance:
0.70-1.00 mm (0.0276-0.0394 in.)
If the pack clearance is less than the limit, parts may have
been assembled incorrectly, check and reassemble
again.

A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONFRONT PLANETARY GEAR -
AT-57
FRONT PLANETARY 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 turns freely clock-
wise and locks counterclockwise.
2. REMOVE 2 OIL SEAL RINGS
AT0E4-02
AT0E5-03

A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONFRONT PLANETARY GEAR -
AT-58
3. REMOVE NO.1 ONE- WAY CLUTCH AND THRUST
WASHER FROM SUN GEAR INPUT DRUM
4. REMOVE SUN GEAR INPUT DRUM FROM PLAN-
ETARY SUN GEAR
(a) Use a wooden block, etc. as a work stand.
(b) Using SST, remove the snap ring.
SST 09350-30020 (09350-07070)
(c) Remove the sun gear input drum from the planetary sun
gear.
5. REMOVE SNAP RING FROM PLANETARY SUN GEAR
Using a snap ring expander, remove the snap ring from
the planetary sun gear.
FRONT PLANETARY GEAR INSPECTION
1. CHECK FRONT PLANETARY RING GEAR BUSHING
Using 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.
AT0E6-03

A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONFRONT PLANETARY GEAR -
AT-59
2. MEASURE PLANETARY PINION GEAR THRUST
CLEARANCE
Using a feeler gauge, measure the planetary pinion gear
thrust clearance.
Standard clearance:
0.2-0.6 mm (0.008-0.0024 in.)
Maximum clearance:
1.0 mm (0.039 in.)
If the clearance is greater than the maximum, replace the
planetary gear assembly.
3. CHECK PLANETARY SUN GEAR BUSHINGS
Using a dial indicator, measure the inside diameter of the
planetary ring gear bushing.
Maximum inside diameter:
27.08 mm (1.0661 in.)
If the inside diameter is greater then the maximum, re-
place the planetary sun gear.
PLANETARY SUN GEAR AND NO.1
ONE-W AY CLUTCH ASSEMBLY
1. INSTALL SNAP RING TO PLANETARY SUN GEAR
Using a snap ring expander, remove the snap ring from
the planetary sun gear.
2. INSTALL SUN GEAR INPUT DRUM
(a) Use a wooden block, etc. as a work stand and place the
planetary sun gear on it.
(b) Install the sun gear input drum onto the planetary sun
gear.
(c) Using SST, install the snap ring.
SST 09350-30020 (09350-07070)
AT0E7-05

A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONFRONT PLANETARY GEAR -
AT-60
3. INSTALL THRUST WASHER ONTO PLANETARY SUN
GEAR
HINT: Make sure that the lug shapes match the holes on
the sun gear input drum.
4. INSTALL ASSEMBLED NO.1 ONE-WAY CLUTCH AND
SECOND BRAKE HUB ONTO PLANETARY SUN GEAR
5. CHECK OPERATION OF NO.1 ONE-WAY CLUTCH
(a) Hold the planetary sun gear and turn the second brake
hub.
(b) The second brake hub turns freely clockwise and locks
counterclockwise.
(c) Remove the one-way clutch and second brake hub.
6. INSTALL OIL SEAL RINGS
(a) Coat the 2 oil seal rings with AFT.
(b) Install the 2 oil seal rings onto the planetary sun gear.
NOTICE: Do not spread the ring ends too much.
HINT: After installing the oil seal rings, check that they ro-
tate smoothly.

A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONSECOND BRAKE -
AT-61
SECOND BRAKE
COMPONENTS
SECOND BRAKE DISASSEMBLY
1. CHECK SECOND BRAKE PISTON MOVEMENT
Make sure the second brake piston moves smoothly while
applying and releasing low-pressure compressed air to
the second brake drum.
2. REMOVE PISTON RETURN SPRING
(a) Places SST on the spring retainer, and compress the re-
turn spring with a shop press.
SST 09350-30020 (09350-07040)
(b) Using SST, remove the snap ring.
SST 09350-30020 (09350-07070)
AT0E8-02
AT0E9-03

A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONSECOND BRAKE -
AT-62
(c) Remove the spring retainer and piston return spring.
3. REMOVE SECOND BRAKE PISTON
(a) Hold the second brake piston with hand apply com-
pressed air to the second brake drum to remove the se-
cond brake piston.
(b) Remove the second brake piston.
HINT: If the piston is at an angle and cannot be removed,
press down on the side jutting out and again apply com-
pressed air, or else wind vinyl tape around the piston end
and remove it with needle nose pliers.
(c) Remove the 2 O-rings from the piston.
SECOND BRAKE 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 PISTON RETURN SPRING
Check the return spring free length together with the
spring test.
Standard free length:
19.64 mm (0.7732 in.)
AT0EA-04