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A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONFIRST AND REVERSE BRAKE -
AT-69
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)
AT0EG-02
AT0EH-03
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A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONFIRST AND REVERSE BRAKE -
AT-70
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 the 2 O-rings from the No.1 piston.
FIRST AND REVERSE BRAKE INSPECTION
1. CHECK 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.)
AT0EJ-04
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A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONFIRST AND REVERSE BRAKE -
AT-71
FIRST AND REVERSE BRAKE 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 to 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 a 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)
AT0EK-03
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A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONFIRST AND REVERSE BRAKE -
AT-72
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.
Page 221 of 2543
A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONTRANSMISSION CASE --
AT-73
TRANSMISSION CASE
TRANSMISSION CASE INSPECTION
INSPECT TRANSMISSION CASE BUSHING
Using a cylinder gauge, measure the inside diameter of
the transmission case rear bushing.
Maximum inside diameter:
38.18 mm (1.5031 in.)
If the inside diameter is greater than the maximum, re-
place the transmission case.
AT0EL-03
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A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONEXTENSION HOUSING -
AT-74
EXTENSION HOUSING
EXTENSION HOUSING DISASSEMBLY
1. REMOVE OIL SEAL FROM EXTENSION HOUSING
Using a screwdriver, remove the oil seal.
2. REMOVE EXTENSION HOUSING BEARING
(a) Using a snap ring expander, remove the snap ring.
(b) Using SST, drive out the bearing.
SST 09325-12010
EXTENSION HOUSING ASSEMBLY
1. INSTALL EXTENSION HOUSING BEARING
(a) Using SST, drive in the bearing.
SST 09350-30020 (09350-32140)
(b) Using a snap ring expander, install the snap ring.
AT0EM-03
AT0EN-03
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A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONEXTENSION HOUSING -
AT-75
2. INSTALL OIL SEAL TO EXTENSION HOUSING
Using SST, install a new oil seal.
SST 09325-40010
Page 224 of 2543
A340E (2JZ-GTE) AUTOMATIC TRANSMISSIONVALVE BODY -
AT-76
VALVE BODY
COMPONENTS
VALVE BODY DISASSEMBLY
1. REMOVE DETENT SPRING AND SPRING PLATE
2. REMOVE MANUAL VALVE
AT0EP-02
AT0PU-02