TOYOTA CAMRY 1999 Service Repair Manual

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

AUTOMATIC TRANSAXLEOVERDRIVE UNIT ±
AX±76
4. INSTALL SNAP RING INTO CASE
Be sure the end gap of the snap ring is not aligned with
one of cutouts.
5. INSTALL OVERDRIVE PLANETARY GEAR ONTO OV-
ERDRIVE DIRECT CLUTCH
While turning the overdrive planetary gear clockwise,
install it onto the overdrive direct clutch.
HINT: If the overdrive planetary gear is properly installed
onto the direct clutch, the counter drive gear height from
the overdrive case will be about 24 mm (0.94 in.).

AUTOMATIC TRANSAXLEVALVE BODY ±
AX±77
VALVE BODY
COMPONENTS
VALVE BODY DISASSEMBLY
NOTICE: When disassembling the valve body, be careful
not to damage or deform the plate which overhangs the
valve body.
1. REMOVE SOLENOIDS
(a) Remove No.1 and No.2 solenoids with the retainer.
NOTICE: When removing the solenoid, do not use a screw-
driver, etc. to pry up the solenoid.
(b) Remove the O±ring from each solenoid.
(c) Remove the No.3 solenoid.
(d) Remove the O±ring from the solenoid.
AX044±02
AX0TW±01

AUTOMATIC TRANSAXLEVALVE BODY ±
AX±78
2. REMOVE LOCK PLATE
3. REMOVE B
0 ACCUMULATOR ASSEMBLY
(a) Remove the 3 bolts.
(b) Remove the B
0 accumulator assembly.
4. DISASSEMBLE B
0 ACCUMULATOR ASSEMBLY
(a) Applying compressed air to the cylinder hole, remove the
piston and spring.
(b) Remove the 2 O±rings from the piston.
5. REMOVE NO.4 SOLENOID
(a) Remove the No.4 solenoid.
(b) Remove the O±ring from the solenoid.
6. REMOVE NO.1 LOWER VALVE BODY COVER
Remove the 5 bolts and No.1 lower valve body cover.

AUTOMATIC TRANSAXLEVALVE BODY ±
AX±79
7. REMOVE OIL STRAINER, NO.1 LOWER VALVE BODY
COVER GASKETS AND CHECK VALVE
(a) Remove the 2 gaskets and plate from the lower valve
body.
(b) Remove the oil strainer, check valve and spring.
8. REMOVE PRESSURE RELIEF VALVE
9. REMOVE NO.2 LOWER VALVE BODY COVER, OIL
STRAINER, CHECK BALLS AND VIBRATING STOP-
PER
Remove the 11 bolts and lower valve body cover.
(b) Remove the 2 check balls, oil strainer and vibrating stop-
per.

AUTOMATIC TRANSAXLEVALVE BODY ±
AX±80
10. REMOVE NO.2 LOWER VALVE BODY COVER GAS-
KETS AND CHECK BALLS
(a) Remove the 2 screws from the lower valve body cover.
(b) Remove the 2 gaskets and plate.
(c) Remove the 3 check balls from the cover.
11. REMOVE BOLTS FROM UPPER VALVE BODY
Remove the 3 bolts.
12. LIFT OFF UPPER VALVE BODY AND NO.1 PLATE AS
A SINGLE UNIT
Hold No.1 plate to the upper valve body and lift off the up-
per valve body.
HINT: Be careful that the check balls and oil strainer do
not fall out.

AUTOMATIC TRANSAXLEVALVE BODY ±
AX±81
13. REMOVE 2 CHECK BALLS AND VIBRATING STOP-
PER FROM UPPER VALVE BODY
14. REMOVE 2 OIL STRAINERS AND CHECK BALL FROM
LOWER VALVE BODY
VALVE BODY ASSEMBLY
1. INSTALL 2 CHECK BALLS AND VIBRATING STOP-
PER TO UPPER VALVE BODY
2. INSTALL 2 OIL STRAINERS AND CHECK BALL TO
LOWER VALVE BODY
3. POSITION PLATE AND NEW GASKETS ON UPPER
VALVE BODY
Position new No.1 gasket, plate and the new No.2 gasket
on the upper valve body.
HINT: Since No.1 gasket and No.2 gasket are similar, use
the illustration below to discriminate between them.
AX0TX±01

AUTOMATIC TRANSAXLEVALVE BODY ±
AX±82
4. PLACE UPPER VALVE BODY WITH PLATE AND GAS-
KETS ON LOWER VALVE BODY
Hold the upper valve body, plate and gaskets securely so
they do not separate.
Align each bolt hole in the valve bodies with the gaskets
and plate.
5. INSTALL AND FINGER TIGHTEN BOLTS IN UPPER
VALVE BODY TO SECURE LOWER VALVE BODY
Install and finger tighten the 3 bolts.
HINT: Each bolt length is indicated below.
Bolt length:
Bolt A: 44 mm (1.732 in.)
Bolt B: 16 mm (0.630 in.)
6. INSTALL NO.2 LOWER VALVE BODY COVER GAS-
KETS, PLATE AND 3 CHECK BALLS
(a) Install the 3 check balls into the No.2 lower valve body
cover.

AUTOMATIC TRANSAXLEVALVE BODY ±
AX±83
(b) Position a new gasket and plate and then another new
gasket.
HINT: Both gaskets are identical.
(c) Install the 2 screws.
8. INSTALL NO.2 LOWER VALVE BODY COVER
(a) Position the No.2 lower valve body cover.
(b) Install and finger tighten the 11 bolts.
HINT: Each bolt length is indicated below.
Bolt length:
Bolt A: 40 mm (1.575 in.)
Bolt B: 44 mm (1.732 in.)
Bolt C: 14 mm (0.551in.)
9. INSTALL OIL STRAINER AND CHECK VALVE
Install the oil strainer and check valve into the lower valve
body.

AUTOMATIC TRANSAXLEVALVE BODY ±
AX±84
10. INSTALL LOWER VALVE BODY COVER GASKETS
AND NO.2 PLATE
Position a new gasket and plate and then another new
gasket.
HINT: Both gaskets are identical.
11. INSTALL LOWER VALVE BODY COVER
(a) Position the lower valve body cover.
(b) Install and finger tighten the 5 bolts.
HINT: Each bolt length is indicated below.
Bolt length
Bolt A: 47 mm (1.850 in.)
Bolt B: 14 mm (0.551 in.)
12. INSTALL PRESSURE RELIEF VALVE
13. TIGHTEN BOLTS OF UPPER AND LOWER VALVE BO-
DIES
(a) Tighten the 16 bolts in the lower valve body.
Torque: 6.6 N´m (67 kgf´cm, 58 in.´lbf)
(b) Tighten the 3 bolts in the upper valve body.
Torque: 6.6 N´m (67 kgf´cm, 58 in.´lbf)
14. INSTALL B0 ACCUMULATOR ASSEMBLY
(a) Coat new O±rings with ATF and install them to the piston.
(b) Install the spring and piston into the cylinder.
Spring dimensions
mm (in.)
ColorFree lengthCoil outer diameter
Inner White47.5 (1.870)18.9 (0.744)
Outer None16.3 (0.642)20.7 (0.815)