clutch TOYOTA CAMRY V20 1986 Service Information

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

EVALUATION
(a) If the measured values at all ranges are higher than specified:
wThrottle cable out of adjustment
w4 Throttle valve defective
Regulator valve defective
(b) If the measured values at all ranges are lower than specified:
wThrottle cable out of adjustment
wThrottle valve defective
wRegulator valve defective
wOil pump defective
wO/D direct clutch defective
(c) If pressure is low in the D range only:
wD range circuit fluid leakage
wForward clutch defective
(d) If pressure is low in the R range only:
wR range circuit fluid leakage
wDirect clutch defective
wFirst and reverse brake defective
± AUTOMATIC TRANSAXLETroubleshooting (Mechanical System Tests) (A140L and
A140E)AT±41

COMPONENT PARTS
General Notes
The instructions here are organized so that you work on only one component group at a time.
This will help avoid confusion from similar±looking parts of different subassemblies being on
your work bench at the same time.
The component groups are inspected and repaired from the converter housing side.
As much as possible, complete the inspection, repair and assembly before proceeding to the
next component group. If a component group can not be assembled because parts are being or-
dered, be sure tc keep all parts of that group in a separate container while proceeding with dis-
assembly, inspection, repair and assembly of other component groups.
Recommended fluid for the automatic transaxle is ATF type DEXRON) ll.
GENERAL CLEANING NOTES:
1. All disassembled parts should be washed clean with any fluid passages and holes blown trough wit com-
pressed air.
2. When using compressed air to dry parts, always aim away from yourself to prevent accidentally spraying,
automatic transmission fluid or kerosene in your face.
3. The recommended automatic transaxle fluid or kerosene should be used for cleaning.
PARTS ARRANGEMENT:
1. After cleaning, the parts should be arranged in proper order to allow efficient inspection, repairs, an(
reassembly.
2. When disassembling a valve body, be sure to keep each valve together with the corresponding spring
3. New brakes and clutches that are to be used for replacement must be soaked in transaxle fluid for a least
fifteen minutes before assembly.
GENERAL ASSEMBLY:
1. All oil seal rings, clutch discs, clutch plates, rotating parts, and sliding surfaces should be coated with
transmission fluid prior to reassembly.
2. All gaskets and rubber O±rings should be replaced.
3. Make sure that the ends of a snap ring are not aligned with one of the cutouts and are installed in the
groove correctly.
4. If a worn bushing is to be replaced, the subassembly containing that bushing must be replaced.
5. Check thrust bearings and races for wear or damage. Replace if necessary.
6. Use petroleum jelly to keep parts in place.
± AUTOMATIC TRANSAXLEComponent Parts (General Notes) (A140L and A140E)AT±78

22. REMOVE OIL PUMP AND DIRECT CLUTCH
While holding the input shaft, grasp the pump stator
shaft and pull the oil pump and direct clutch together
out the transmission case.
NOTICE: Push the 2nd coast brake band into the case, be-
ing careful not to catch it on the direct clutch
drum. 21. REMOVE OIL PUMP AND DIRECT CLUTCH
NOTICE: Before removing the oil pump, remove the
second coast brake piston.
(a) Remove the seven bolts. .
23. REMOVE DIRECT CLUTCH FROM OIL PUMP
24. BE CAREFUL WHEN REMOVING RACE BEHIND OIL
PUMP(b) Using SST, pull out the oil pump from the trans-
mission case.
SST 09350±32014 (09351±32061) (b) Remove the cover.
(c) Remove the piston and outer return spring.
(d) Remove the O±ring from the cover.
± AUTOMATIC TRANSAXLERemoval of Component Parts (A140L and A140E)AT±65

28. REMOVE SECOND COAST BRAKE BAND
(a) Push the pin with a small screwdriver and remove it
from the bolt hole of the oil pump mounting.
(b) Remove the brake band.
HINT: The method of inspection, refer to page AT±80. 27. REMOVE BEARINGS AND RACES FROM FORWARD
CLUTCH 25. REMOVE CLUTCH DRUM THRUST WASHER
26. REMOVE FORWARD CLUTCH
30. REMOVE BEARING RACES FROM FRONT
PLANETARY RING GEAR 29. REMOVE FRONT PLANETARY RING GEAR
± AUTOMATIC TRANSAXLERemoval of Component Parts (A140L and A140E)AT±66

34. STAND TRANSMISSION CASE UP AND REMOVE
SECOND COAST BRAKE BAND GUIDE 33. REMOVE SUN GEAR, SUN GEAR INPUT DRUM,
SECOND BRAKE HUB AND NO. 1 ONE±WAY CLUTCH
35. REMOVE SNAP RING HOLDING SECOND BRAKE
DRUM TO CASE 32. REMOVE RACES AND BEARINGS FROM PLANETARY
GEAR 31. REMOVE PLANETARY GEAR
± AUTOMATIC TRANSAXLERemoval of Component Parts (A140L and A140E)AT±67

36. REMOVE SECOND BRAKE DRUM
If the brake drum is difficult to remove, lightly tap it with
a wooden block.
38. REMOVE PLATES, DISCS AND FLANGE
HINT: For the method of inspection, refer to AT±100.
40. REMOVE SNAP RING HOLDING NO. 2 ONE±WAN
CLUTCH OUTER RACE TO CASE 37. REMOVE SECOND BRAKE PISTON RETURN SPRING
39. REMOVE SECOND BRAKE DRUM GASKET
± AUTOMATIC TRANSAXLERemoval of Component Parts (A140L and A140E)AT±68

45. CHECK OPERATION OF FIRST AND REVERSE BRAKE
PISTON
Apply compressed air into the case passage and con-
firm that the piston moves.
If the piston does not move, disassemble and inspect. 41. REMOVE NO. 2 ONE±WAY CLUTCH AND REAR
PLANETARY GEAR
42. BE CAREFUL WHEN REMOVING THRUST WASHERS
FROM BOTH SIDES OF PLANETARY CARRIER
43. REMOVE REAR PLANETARY RING GEAR
44. REMOVE BEARINGS AND RACES
± AUTOMATIC TRANSAXLERemoval of Component Parts (A140L and A140E)AT±69

53. REMOVE FIRST AND REVERSE BRAKE PISTON
(a) Apply compressed air into the passage of the case to
remove the piston.
HINT: Hold the piston so it is not slanted and blow with
the gun 'slightly away from the oil hole. 52. REMOVE PISTON RETURN SPRING
(a) Place SST, and compress the return springs evenly by
tightening the bolt gradually.
SST 09350±32014 (09351±32040)
(b) Using snap ring pliers, remove the snap ring.
(c) Remove SST.
(d) Remove the return spring from the case. 51. REMOVE± OVERDRIVE CLUTCH APPLY GASKET AND
OVERDRIVE BRAKE APPLY GASKET(d) Remove the overdrive planetary gear and count-
er gear if they remain in the transmission.
± AUTOMATIC TRANSAXLERemoval of Component Parts (A140L and A140E)AT±71

DISASSEMBLY OF DIRECT CLUTCH
1. CHECK PISTON STROKE OF DIRECT CLUTCH
(a) Install the direct clutch on the oil pump.
(b) Using a dial indicator (long type pick or SST),
measure the direct clutch piston stroke applying and
releasing the compressed air (4 ± 8 kg/cm2, 57 ±
114 psi, 392 ± 785 kPa) as shown.
SST 09350±32014 (09351±32190)
Piston stroke: 1.11 ± 1.44 mm (0.0437 ± 0.0567 in.)
If the piston stroke is greater than the maximum in-
spect the each component.
Direct Clutch
± AUTOMATIC TRANSAXLEComponent Parts (Direct Clutch) (A140L and A140E)AT±86