parking brake TOYOTA CAMRY V20 1986 Service Information

AT3206
Planetary Gear Unit
Shift lever
positionGear position
C
0C1C2B0B1B2B3F0F1F2
PParking


RReverse






NNeutral


D1st







2nd









3rd










O/D








21st







2nd











*3rd










L1st









*2nd












OPERATION
A540E, A540H

..... Operating
*Down-shift only-no up-shift
Rear Planetary
GearFront Planetary
Gear Intermediate
Shaft O/D Planetary
Gear O/D One-Way
Clutch (F
0)One-W ay Clutch
No. 1 (F1) Counter
Drive GearInput Shaft Forward
Clutch (C
1)Direct
Clutch (C2) One-W ay Clutch
No. 2 (F2) O/D Brake (B0) O/D Direct
Clutch (C
0)First and Reverse
Brake (B3)Second Brake (B2)Second Coast
Brake (B1)
- AUTOMATIC TRANSAXLEOperationAT-5

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

AT5025
Retaining
Spring
AT0312
AT0969
AT2757AT0093
(g) Match the collar hole to the lever calking hollow
and calk the collar to the lever.
(h) Install the retaining spring.
3. INSTALL PARKING LOCK PAWL BRACKET
Torque: 75 kg-cm (65 in.-lb, 7.4 N-m)
4. CHECK OPERATION OF PARKING LOCK PAWL
Make sure the counter driven gear is locked when the
manual valve lever is in the P range.
5. INSTALL FIRST AND REVERSE BRAKE PISTON TO
TRANSMISSION CASE
(a) Coat the new O-rings with ATF.
(b) Install the two O-rings on the piston.
AT-130- AUTOMATIC TRANSAXLEInstallation of Component Parts

Operating Mechanism for Each Gear (A140L A140E)
1. CLUTCH BRAKE AND ONE±WAY CLUTCH
'Down±shift only ± no up±shift `Down±shift only ± no up±shift
Shift lever
position Shift lever
positionGear position
Gear Position
Parking Parking
Reverse
A140L
Reverse
A140E
Neutral Neutral
2nd2nd
3rdO/D
O/D2nd
2nd2nd
1 st
2nd1 st
1 st3rd
1 st1 st
3rd
± AUTOMATIC TRANSAXLETroubleshooting (Operating Mechanism ± for Each Gear)
(A140L and A140E)AT±14

Preliminary Check
11. CHECK FLUID LEVEL
HINT: The vehicle must have been driven so that the
engine and transmission are at normal operating tem-
perature. (fluid temperature: 158 ± 176
°F or 70 ±80°C)
(a) Park the vehicle on a level surface, set the parking
brake.
(b) With the engine idling, shift the shift lever into all posi-
tions from P to L position and return to P position.
HINT: Depress the brake pedal.
(a) Pull out the transaxle dipstick and wipe it clean.
(b) Push it back fully into the tube.
(c) Pull it out and check that the fluid level is in the HOT
range. If the level is at the low side of the hot range,
add fluid.
Fluid type: ATF DEXRON) II
NOTICE: Do not overfill.
2. CHECK FLUID CONDITION
If the fluid smells burnt or is black, replace it
3. REPLACE ATF
NOTICE: Do not overfill.
(a) Remove the drain plug and drain the fluid.
(b) Reinstall the drain plug securely.
(c) With the engine OFF, and new fluid through the dip
stick tube.
SST 09043±38100
Fluid: ATF DEXRON) II
Capacity:
Dry fill:
A140E 5.3 liters (5.6 US qts, 4.7 Imp. qts)
A140L 5.7 liters (6.0 U S qts, 5.0 Imp. qts)
Drain and refill (Reference):
140E, A140L 2.5 liters (2.6 US qts, 2.2 Imp. qts)
(d) Start the engine and shift the selector into all positions
from P through L and then shift into P.
(e) With the engine idling, check the fluid level. Add fluid
up to the ºCOOLº level on the dipstick.
(f) Check the fluid level with the normal fluid temperature
(158 ± 176
°F or 70 ± 80°C) and add as necessary.
NOTICE: Do not overfill.
± AUTOMATIC TRANSAXLETroubleshooting (Preliminary Check) (A140L and A140E)AT±21

Mechanical System Tests
STALL TEST
The object of this test is to check the overall performance of the transaxle and engine by measur-
ing the stall speeds in the D and R ranges.
CAUTION:
wPerform the test at normal operation fluid temperature (122 ± 176°F or 50 ± 80°C).
wDo not continuously run this test longer than 5 seconds.
wTo ensure safety, conduct this test in a wide, clear, level area, which provides good traction.
wThe stall test should always be carried out in pairs. One should observe the conditions of wheels
or wheel stoppers outside the vehicle while the other is performing the test.
MEASURE STALL SPEED
(a) Chock the front and rear wheels.
(b) Connect a tachometer to the engine.
(c) Fully apply the parking brake.
(d) Step down strongly on the brake pedal with your left foot.
(e) Start the engine.
(f) Shift into the D range. Step all the way down on the accelerator pedal with your right foot. Quickly
read the stall speed at this time.
Stall speed: 2,200
+150 rpm
(g) Perform the same test in R range.
EVALUATION
(a) If the stall speed is the same for both ranges without the rear wheels rotating but lower than specified
value:
wEngine output may be insufficient
w Stator one±way clutch is not operating properly
(b) If the stall speed in D range is higher than specified:
wLine pressure too low
wForward clutch slipping
wNo. 2 one±way clutch not operating properly
wO/D one±way clutch not operating properly
(c) If the stall speed in R range is higher than specified:
wLine pressure too low
wDirect clutch slipping
wFirst and reverse brake slipping
wO/D one±way clutch not operating properly
(d) If the stall speed in both R and D ranges are higher than specified:
wLine pressure too low
wImproper fluid level
wO/D one±way clutch not operating properly
± AUTOMATIC TRANSAXLETroubleshooting (Mechanical System Tests) (A140L and
A140E)AT±38

TIME LAG TEST
When the shift lever is shifted while the engine is idling, there will be a certain time elapse or lag
before the shock can be felt. This is used for checking the condition of the O/D direct clutch, for-
ward clutch, direct clutch and first and reverse brake.
NOTICE:
wPerform the test at normal operating fluid temperature (122 ±176°F or 50 ± 80°C).
wBe sure to allow one minute interval between tests.
wMake three measurements and take the average value.
MEASURE TIME LAG
(a) Fully apply the parking brake.
(b) Start the engine and check the idle speed.
Idle speed (N range) : 700 rpm
(c) Shift the shift lever from N to D position. Using a stop watch, measure the time it takes from shifting
the lever until the shock is felt.
Time lag: Less than 1.2 seconds
(d) In the same manner, measure the time lag for N ± R.
Time lag: Less than 1.5 seconds
EVALUATION
(a) If N ± D time lag is longer than specified:
wLine pressure too low
wForward clutch worn
wO/D one±way clutch not operating properly
(b) If N ± R time lag is longer than specified:
wLine pressure too low
wDirect clutch worn
wFirst and reverse brake worn
wO/D one±way clutch not operating properly
± AUTOMATIC TRANSAXLETroubleshooting (Mechanical System Tests) (A140L and
A140E)AT±39

HYDRAULIC TEST
PREPARATION
(a) Warm up the transaxle fluid.
(b) Remove the transaxle case test plug and connect the hydraulic pressure gauge.
SST 09992±00094 (Oil pressure gauge)
NOTICE:
wPerform the test at normal operating fluid temperature (122 ±176°F or 50 ± 80°C).
wThe line pressure test should always be carried out in pairs. One should observe the conditions
of wheels or wheel stoppers outside the vehicle while the other is performing the test.
MEASURE LINE PRESSURE
(a) Fully apply the parking brake and chock the four wheels.
(b) Start the engine and check idling rpm.
(e) Step down strongly on the brake pedal with your left foot and shift into D range.
(d) Measure the line pressure when the engine is idling.
(e) Press the accelerator pedal all the way down. Quickly read the highest line pressure when engine
speed reaches stall speed.
(f) In the same manner, perform the test in R range.
If the measured pressure are not up to specified values, recheck the throttle cable adjustment and
perform a retest.
kg/cm (psi, kPa)
Line pressure
R range D range
Idling
IdlingStall
Stall
± AUTOMATIC TRANSAXLETroubleshooting (Mechanical System Tests) (A140L and
A140E)AT±40

MEASURE GOVERNOR PRESSURE (A1401)
(a) Check the parking brake to see that it is not applied.
(b) Start the engine.
(c) Shift into D range and measure the governor pressures at the speeds specified in the table.
EVALUATION
If governor pressure is defective:
wLine pressure defective
wFluid leakage in governor pressure circuit
wGovernor valve operation defective .
Vehicle speed (Reference only)
Drive pinion shaftGovernor pressure
± AUTOMATIC TRANSAXLETroubleshooting (Mechanical System Tests) (A140L and
A140E)AT±42