lock TOYOTA CAMRY V20 1986 Service Information

VALVE BODY
Hydraulic Control System

A540E, A540H
The hydraulic control system is composed of the oil pump, the valve body, the solenoid valves, the accu-
mulators, the clutches and brakes, and the governor valve as well as the fluid passages which connect all
of these components.
Based on the hydraulic pressure created by the oil pump, the hydraulic control system governs the hy-
draulic pressure acting on the torque converter, clutches and brakes in accordance with the vehicle driving
conditions.
There are three solenoid valves on the valve body.
The No. 1 and No. 2 solenoid valves are turned on and off by signals from ECU to operate the shift valves
and change the gear shift position.
The No. 3 solenoid valve is operated by signals from the ECU to engage or disengage the lock-up clutch
of the torque converter.

A540H
There are two center differential control solenoid valves on the transfer.
The solenoid valves are adjusting the center differential control pressure.
HYDRAULIC CONTROL SYSTEM
Hydr. pressure control
OIL PUMP
CLUTCHES & BRAKESFluid passage switchingPlanetary gear unit
Torque converter
Throttle Cable
SOLENOID VALVES
ECU
AT-8- AUTOMATIC TRANSAXLEOperation

AT4675r Non-reusable part70 (61 in.-lb, 6.9)kg-cm (ft-lb, N-m)Neutral Start Switch
55 (48 in.-lb, 5.4)
Manual Shift Leverr Lock Plate Elbow Snap Ring
275 (20, 27)Coverr O-Ring r O-Ring r O-RingPlug 2nd Coast
Brake Pistonr O-Ring Spring r O-Ring
275 (20, 27)
Union (A540E)No. 2 Speed Sensor
(A540E)
r O-Ring
275 (20, 27)
Elbow (A540H) Throttle Cabler GasketTransaxle Case
Upper Cover (A540H) r O-Ring r Gasket
275 (20, 27)
Union (A540H) Transaxle Case
Upper CoverBreather Hose
(A540H)
100 (7, 10) 200 (14, 20)
r O-Ring Solenoid WireBreather Tube (A540H) A540E and A540H
r O-Ring
: Specified torque
REMOVAL OF COMPONENT PARTS
COMPONENTS
- AUTOMATIC TRANSAXLERemoval of Component PartsAT-13

r Non-reusable part
kg-cm (ft-lb, N-m) : Specified torque
Drain Plug50 (43 in.-lb, 4.9)
r Gasket Oil Tube BracketOil Pan r Gasket Oil TubeMagnet Oil Tube
(A540H Only) CoverStrainer r GasketManual Valve
Body
100 (7, 10)
Retainer
r O-RingManual valve C
1 Accumulator
PistonConnector
Clamp B
2 Accumulator
PistonB3 Apply Tube Detent Spring r O-Ring
Spring Spring C
2 Accumulator
Pistonr Second Brake
Apply Gasket r O-RingValve BodyParking Lock Rod Springr Oil SealRetaining
Spring Pin Manual Valve
Shaftr CollarManual Valve Lever
A540E and A540H
r Gasket r O-Ring
r O-Ring
COMPONENTS (Cont'd)
AT4676
AT-14- AUTOMATIC TRANSAXLERemoval of Component Parts

kg-cm (ft-lb, N-m)
r Non-reusable part
: Specified torque
Parking Lock Pawl 2nd Coast Brake
Band Guide Snap RingBracket 1st and Reverse
Brake Pistonr Second Brake
Drum Gasket Snap Ringr GasketO/D Brake Drumr Gasket FlangeSnap RingSpringSnap RingO/D Planetary Gear
Springr O-Ring DiscBearing Snap RingRear Planetary
Gear
O/D Case250 (18, 25) 225 (16, 22)2nd Brake
DrumRear Planetary
Ring Gear Flange Plate Bearing
BearingDrum and
Sun Gear Bearing
PinBearingThrust
Washer Oil PumpThrust
WasherSecond Coast
Brake Band r O-RingDirect ClutchNo. 1 One-way
Clutch Thrust WasherFront Planetary
Ring Gear
A540E and A540H
PlateA540E: 7 pieces
A540H: 6 pieces
DiscA540E: 7 pieces
A540H: 6 piecesBearing No. 2 One-way
ClutchThrust
WasherThrust
Washer Forward Clutch
Front Planetary
Gear
COMPONENTS (Cont'd)
AT5020
- AUTOMATIC TRANSAXLERemoval of Component PartsAT-15

r Non-reusable part

Precoated part
AT3526
kg-cm (ft-lb, N-m) : Specified torque
Differential Case Assembly 195 (14, 19)Shim See page AT-123 r Lock NutOuter RaceOuter Race Oil Slinger400 (29, 39)r Gasket r SpacerFiller Plug Sensor
Rotor r O-Ringr Gasket Carrier CoverRH Retainer Drive
Pinion Bearing
Case195 (14, 19) r O-RingDrive Pinion Cap
A540E
Counter Driven GearSnap Ring
LH Side Bearing
RetainerDrain Plug
COMPONENTS (Cont'd)
AT-16- AUTOMATIC TRANSAXLERemoval of Component Parts

AT4677
r Non-reusable part

Precoated part
: Specified torque kg-cm (ft-lb, N-m)
Front Differential Assembly 195 (14, 19)Oil Seal Ring Outer RaceSnap Ring r Lock NutLH Side Rearing
Retainer Outer RaceRing Gear Mounting
Case Sleeve Oil SlingerIntermediate Shaft 400 (29, 39) Counter Driven Gearr Gasket
r Spacerr O-Ring r Apply Gasket
Plug Snap RingDrive PinionCarrier Cover Plug
r O-Ring r O-Ring Bearing
CageVehicle
Speed SensorTransfer
Assembly r O-Ringr Apply Gasket Drive Pinion Cap
A540H
Drain Plug
Plugr O-Ring
Drive Pinion
No. 2 Spacer
COMPONENTS (Cont'd)
- AUTOMATIC TRANSAXLERemoval of Component PartsAT-17

AT4600
A540H
AT4221
Gasket Apply
A540H
AT4222
SSTBolt and Washer
A540H
AT3527
ElbowUnionA540H
AT3528
Manual Shift
Lever Neutral Start Switch
SEPARATE BASIC SUBASSEMBLY
1. (A540H)
REMOVE TRANSFER ASSEMBLY
(a) Remove the five nuts and three bolts.
(b) Using a plastic hammer, remove the transfer as-
sembly form the transaxle.
2. (A540H)
REMOVE APPLY GASKET
3. (A540H)
REMOVE DIFFERENTIAL SIDE GEAR INTERMEDIATE
SHAFT
(a) Screw in suitable bolt with washer into the side gear
intermediate shaft.
(b) Using SST, remove the side gear intermediate
shaft.
SST 09520-32012
4. REMOVE UNION AND ELBOW
(a) Using an open end wrench, remove the union and
elbow.
(b) Remove the O-rings from the union and elbow.
5. REMOVE NEUTRAL START SWITCH
(a) Remove the manual shift lever.
(b) Pry off the lock washer and remove the manual
valve shaft nut.
(c) Remove the two bolts and pull out the neutral start
switch.
AT-18- AUTOMATIC TRANSAXLERemoval of Component Parts

AT3529
AT3530
A540E
AT5636
Speed SensorA540H
AT3531
AT0103
6. REMOVE THROTTLE CABLE RETAINING BOLT AND
PLATE
7. REMOVE SOLENOID WIRE RETAINING BOLT
8. (A540E)
REMOVE NO. 2 SPEED SENSOR
(a) Disconnect the connector.
(b) Remove the bolt and pull out the speed sensor.
(c) Remove the O-ring from speed sensor.
9. (A540H)
REMOVE VEHICLE SPEED SENSOR
(a) Remove the bolt and pull out the speed sensor.
(b) Remove the O-ring from speed sensor.
10. REMOVE OIL PAN AND GASKET
(a) Remove the seventeen bolts.
(b) Remove the oil pan by lifting transaxle case.
NOTICE: Do not turn the transaxle over as this will
contaminate the valve body with the foreign materials
in the bottom of the oil pan.
(c) Place the transaxle on wooden blocks to prevent
damage to the oil tube bracket.
11. EXAMINE PARTICLES IN PAN
Remove the magnet and use it to collect any steel chips.
Look carefully at the chips and particles in the oil pan
and on the magnet to anticipate what type of wear you
will find in the transaxle.
Steel (magnetic)... bearing, gear and plate wear
Brass (non-magnetic)... bushing wear
- AUTOMATIC TRANSAXLERemoval of Component PartsAT-19

AT3572
AT0147
AT3573
AT3575 AT2725
(d) Remove the two O-rings from the piston.
48. REMOVE SNAP RING FROM TRANSAXLE CASE
49. REMOVE PARKING LOCK PAWL BRACKET
50. REMOVE MANUAL VALVE SHAFT
(a) Using a cold chisel and hammer, cut the collar.
(b) Remove the retaining spring.
- AUTOMATIC TRANSAXLERemoval of Component PartsAT-31

AT3574
AT3576
AT3577
AT2731
Lock PawlPin
(c) Using a hammer and pin punch, drive out the pin.
(d) Slide out the shaft from the transaxle case and
remove the manual valve lever and parking lock
rod.
51. REMOVE MANUAL VALVE SHAFT OIL SEAL
Using a screwdriver, remove the oil seal.
52. REMOVE PIN, SPRING AND PARKING LOCK PAWL
AT-32- AUTOMATIC TRANSAXLERemoval of Component Parts