TOYOTA SUPRA 1995 Service Repair Manual

A340E(Others) AUTOMATIC TRANSMISSIONPLANETARY SUN GEAR -
AT-74
3. REMOVE THRUST WASHER FROM SUN GEAR INPUT
DRUM
4. REMOVE 2 OIL SEAL RINGS
5. REMOVE SUN GEAR INPUT DRUM FROM PLAN-
ETARY SUN GEAR
(a) Use a wooden block or similar, as work stand.
(b) Using snap ring pliers, remove the snap ring.
(c) Remove the sun gear input drum from the planetary sun
gear.
6. REMOVE SNAP RING FROM PLANETARY SUN GEAR

A340E(Others) AUTOMATIC TRANSMISSIONPLANETARY SUN GEAR -
AT-75
PLANETARY SUN GEAR INSPECTION
CHECK PLANETARY SUN GEAR BUSHINGS
Using a dial indicator, measure the inside diameter of the
planetary sun gear bushings.
Maximum inside diameter:
27.08 mm (1.0661 in.)
If the inside diameter is greater than 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
2. INSTALL SUN GEAR INPUT DRUM
(a) Place a wooden block or similar, as a work stand and
place the planetary sun gear onto it.
(b) Install the sun gear input drum onto the planetary sun
gear.
(c) Install the snap ring with snap ring pliers.
3. INSTALL OIL SEAL RINGS
(a) Coat the 2 oil seal rings with ATF.
(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.
AT05X-03
AT05Y-07

A340E(Others) AUTOMATIC TRANSMISSIONPLANETARY SUN GEAR -
AT-76
4. INSTALL THRUST WASHER
HINT: Make sure that the lug shapes match the holes on
the sun gear input drum.
5. INSTALL ASSEMBLED NO.1 ONE-WAY CLUTCH AND
SECOND BRAKE HUB ONTO PLANETARY SUN GEAR
6. 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.

A340E(Others) AUTOMATIC TRANSMISSIONSECOND BRAKE -
AT-77
SECOND BRAKE
COMPONENTS
SECOND BRAKE DISASSEMBLY
1. REMOVE THRUST WASHER FROM SECOND BRAKE
DRUM
2. CHECK SECOND BRAKE PISTON MOVEMENT
Make sure the second brake piston moves smoothly
when applying and releasing low-pressure compressed
air to the second brake drum.
AT05Z-05
AT060-05

A340E(Others) AUTOMATIC TRANSMISSIONSECOND BRAKE -
AT-78
3. REMOVE PISTON RETURN SPRING
(a) Place SST on the spring retainer, and compress the re-
turn spring with a shop press.
SST 09350-30020 (09350-07040)
(b) Using snap ring pliers, remove the snap ring.
(c) Remove the spring retainer.
(d) Remove the piston return spring.
4. 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
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.
AT061-06

A340E(Others) AUTOMATIC TRANSMISSIONSECOND BRAKE -
AT-79
SECOND BRAKE ASSEMBLY
1. INSTALL SECOND BRAKE PISTON
(a) Coat the 2 new O-rings with ATF and install them on se-
cond brake piston.
(b) Being careful not to damage the O-rings, press the se-
cond brake piston into the second brake drum with both
hands.
2. INSTALL PISTON RETURN SPRING
(a) Install the piston return spring.
(b) Install the spring retainer.
(c) Place SST on the spring retainer, and compress the re-
turn spring with a shop press.
SST 09350-30020 (09350-07040)
(d) Using snap ring pliers, install the snap ring.
3. CHECK SECOND BRAKE PISTON MOVEMENT
Make sure the second brake piston moves smoothly
when applying and releasing low-pressure compressed
air to the second brake drum.
4. INSTALL THRUST WASHER
Coat the thrust washer with petroleum jelly and install it.
HINT: Make sure that the cutout portions of thrust washer
match teeth of the spring retainer.
AT062-03

A340E(Others) AUTOMATIC TRANSMISSIONFIRST AND REVERSE BRAKE -
AT-80
FIRST AND REVERSE BRAKE
COMPONENTS
FIRST AND REVERSE BRAKE
DISASSEMBLY
1. CHECK PISTON STROKE OF FIRST AND REVERSE
BRAKE
Make sure the first and reverse brake pistons move
smoothly when applying and releasing the compressed
air into the transmission case.
2. REMOVE PISTON RETURN SPRING
(a) Place SST on the spring retainer and compress the return
spring.
SST 09350-30020 (09350-07050)
(b) Using SST, remove the snap ring.
SST 09350-30020 (09350-07070)
AT063-05
AT0CB-02

A340E(Others) AUTOMATIC TRANSMISSIONFIRST AND REVERSE BRAKE -
AT-81
3. REMOVE NO.2 BRAKE PISTON
(a) Hold No.2 brake piston with hand, apply compressed air
to transmission case to remove No.2 brake piston.
HINT: If the piston does not pop out with compressed air,
lift the piston out with needle-nose pliers.
(b) Remove the O-ring from No.2 brake piston.
4. REMOVE REACTION SLEEVE
(a) Using SST, remove the reaction sleeve.
SST 09350-30020 (09350-07080)
(b) Remove the O-ring from the reaction sleeve.
5. REMOVE NO.1 BRAKE PISTON
(a) Using SST, remove the No.1 brake piston.
SST 09350-30020 (09350-07090)
(b) Remove 2 O-rings from the No.1 piston.
FIRST AND REVERSE 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 seat.
Standard free length:
12.9 mm (0.508 in.)
AT0CC-02

A340E(Others) AUTOMATIC TRANSMISSIONFIRST AND REVERSE BRAKE -
AT-82
FIRST AND REVERSE BRAKE PISTON
ASSEMBLY
1. INSTALL NO.1 BRAKE PISTON
(a) Coat the 3 new O-rings with ATF.
(b) Install the 2 O-rings on No.1 brake piston.
(c) Install the O-ring on the reaction sleeve.
(d) Install the No.1 brake piston on the reaction sleeve.
2. INSTALL REACTION SLEEVE AND NO.1 BRAKE PIS-
TON TO TRANSMISSION CASE
With the No.1 brake piston underneath (the rear side),
install the brake reaction sleeve and No.1 brake piston to
the transmission case.
NOTICE: Be careful not to damage the O-rings.
3. INSTALL NO.2 BRAKE PISTON
(a) Coat the new O-ring with ATF.
(b) Install the O-ring on No.2 brake piston.
(c) With the spring seat of the piston upwards (the front side),
place the piston in the transmission case.
NOTICE: Be careful not to damage the O-rings.
(d) Place the piston return spring onto the No.2 brake piston.
4. INSTALL PISTON RETURN SPRING
(a) Place SST on the spring retainer and compress the return
spring.
SST 09350-30020 (09350-07050)
(b) Using SST, install the snap ring.
SST 09350-30020 (09350-07070)
AT0CD-02

A340E(Others) AUTOMATIC TRANSMISSIONFIRST AND REVERSE BRAKE -
AT-83
5. CHECK PISTON STROKE OF FIRST AND REVERSE
BRAKE
Make sure the first and reverse brake pistons move
smoothly when applying and releasing the compressed
air into the transmission case.