Page 509 of 4592
AUTOMATIC TRANSAXLEOVERDRIVE UNIT ±
AX±60
OVERDRIVE BRAKE DISASSEMBLY
1. REMOVE PISTON RETURN SPRING
(a) While pushing the return spring, remove the snap ring
with a screwdriver.
(b) Remove the piston return spring.
2. REMOVE PLATES, DISCS AND FLANGE
3. REMOVE PISTON FROM DRUM
Apply compressed air to oil hole to remove the piston.
HINT: Blow with the gun slightly away from the oil hole,
and be careful that the piston does not tilt.
4. REMOVE O±RINGS
Remove the inner and outer O±rings from the piston.
AX03T±03
Page 510 of 4592
AUTOMATIC TRANSAXLEOVERDRIVE UNIT ±
AX±61
OVERDRIVE BRAKE INSPECTION
INSPECT DISCS, PLATES AND FLANGE
Check if the sliding surfaces of the discs, plates 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.
OVERDRIVE DIRECT CLUTCH
DISASSEMBLY
1. CHECK PISTON STROKE OF DIRECT CLUTCH
Install a dial indicator and measuring terminal (SST) to-
gether, measure the piston stroke while applying and re-
leasing compressed air (392±785 kPa, 5±8 kgf/cm
2,
57±114 psi).
Piston stroke:
1.75±2.49 mm (0.0689±0.0980 in.)
SST 09350±32014 (09351±32190)
If the piston stroke is greater than the maximum, inspect
each component.
2. REMOVE OVERDRIVE DIRECT CLUTCH FROM CASE
3. REMOVE BEARING AND RACE FROM CLUTCH
DRUM AND CASE
AX03U±03
AX03V±05
Page 524 of 4592
AUTOMATIC TRANSAXLEOVERDRIVE UNIT ±
AX±75
OVERDRIVE BRAKE ASSEMBLY
1. INSTALL PISTON INTO DRUM
(a) Install new O±rings to the piston.
Coat the new O±rings with ATF.
(b) Press the piston into the drum, being careful not to dam-
age the O±rings.
2. INSTALL FLANGE, DISCS AND PLATES
Install the flange, discs and plates.
Install in order:
P=Plate D=Disc
Flange±D±P±D±P±D±P
3. POSITION PISTON RETURN SPRING
AX043±05
Page 559 of 4592
AUTOMATIC TRANSAXLECOMPONENT PARTS INSTALLATION ±
AX±110
5. INSTALL FIRST AND REVERSE BRAKE PISTON TO
TRANSMISSION CASE
(a) Coat the new O±rings with ATF.
(b) Install the 2 O±rings on the piston.
(c) Push the piston into the bore of the case, facing the spring
seat upward.
6. INSTALL PISTON RETURN SPRING
(a) Place the return spring and snap ring on the piston.
(b) Place SST, and compress the return spring evenly by
tightening the bolt gradually.
SST 09350±32014 (09351±32040)
(c) Install snap ring. Visually check to make sure it is fully
seated and centered by the 3 lugs on the spring retainer.
Be sure the end gap of snap ring is not aligned with the
spring retainer claw.
(d) Remove the SST.
7. INSTALL SNAP RING TO TRANSAXLE CASE
Page 560 of 4592
AUTOMATIC TRANSAXLECOMPONENT PARTS INSTALLATION ±
AX±111
8. INSTALL OVERDRIVE UNIT
(a) Install the overdrive brake apply gasket and overdrive
clutch apply gasket.
(b) Install the overdrive brake drum to the case.
(c) Install the new case gasket to the case.
(d) Make sure that the length from the top surface of the case
to the counter driven gear surface should be about 24 mm
(0.94 in.).
(e) Place the new gasket onto the transaxle case.
(f) Install the overdrive assembly with overdrive case to the
transaxle case.
Page 562 of 4592
AUTOMATIC TRANSAXLECOMPONENT PARTS INSTALLATION ±
AX±113
(d) Install the rear planetary gear.
11. INSTALL DISCS, PLATES AND FLANGE OF FIRST
AND REVERSE BRAKE
(a) Install the 6 plates and discs.
Install in order:
P=Plate D=Disc
P±D±P±D±P±D±P±D±P±D±P±D
(b) Install the flange, facing the flat end downward.
(c) Install the snap ring.
HINT: Be sure that the end gap of the snap ring is not
aligned with one of the cutouts.
12. CHECK FIRST AND REVERSE BRAKE
(a) Check the operation of the first and reverse brake piston.
Apply compressed air into the case passage and confirm
that the piston moves.
(b) Using a filler gauge, check that pack clearance of the first
and reverse brake.
Clearance:
1.92±2.68 mm (0.0756±0.1055 in.)
Page 563 of 4592
AUTOMATIC TRANSAXLECOMPONENT PARTS INSTALLATION ±
AX±114
13. INSTALL NO.2 ONE±WAY CLUTCH INTO CASE
(a) Place the No.2 one±way clutch with the shiny side of
flange upward.
(b) Install the one±way clutch while turning the planetary
gear clockwise with SST.
SST 09350±32014 (09351±32050)
If the planetary gear cannot turn clockwise, check the
installation of the one±way clutch.
(c) Install the snap ring.
HINT: Be sure that the end gap of the snap ring is not
aligned with one of cutouts.
(d) Coat the thrust washer with petroleum jelly and install it
onto the rear planetary gear.
14. INSTALL SECOND COAST BRAKE BAND GUIDE
15. PLACE NO.1 ONE±WAY CLUTCH
(a) Coat the thrust washer with petroleum jelly and install it
on the No.1 one±way clutch.
Page 564 of 4592
AUTOMATIC TRANSAXLECOMPONENT PARTS INSTALLATION ±
AX±115
(b) Place the No.1 one±way clutch onto the rear planetary
gear.
16. INSTALL SECOND BRAKE
(a) Install the flange, facing the flat end upward.
(b) Install the 3 discs and plates.
Install in order:
P=Plate D=Disc
D±P±D±P±D±P
(c) Place the piston return spring into the case.
(d) Place the second brake drum into the case.
HINT: Align the groove of the drum with the bolt.
(e) Place the snap ring into the case so that end gap is
installed into the groove.
(f) While compressing the piston return spring over the drum
with screwdriver, install the snap ring into the groove.
(g) Be sure that the end gap of the snap ring is not aligned
with one of cutouts.