TOYOTA SIENNA 2007 Service Repair Manual

AX–186U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE UNIT
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20. REMOVE B-3 ACCUMULATOR PISTON
(a) Apply compressed air (392 kPa, 4.0 kgf/cm
2, 57 psi)
to the oil hole and remove the B-3 accumulator
piston and 2 springs.
NOTICE:
• Applying compressed air may cause the
piston to jump-out. When removing the
piston, hold it using a waste cloth.
• Take care not to splash ATF when applying
compressed air.
(b) Remove the O-ring from the B-3 accumulator
piston.
21. REMOVE MANUAL VALVE LEVER SHAFT RETAINER
SPRING
(a) Using needle-nose pliers, remove the manual valve
lever shaft retainer spring.
22. REMOVE MANUAL DETENT SPRING SUB-
ASSEMBLY
(a) Remove the 2 bolts, the manual detent spring sub-
assembly and cover.
23. REMOVE PARKING LOCK PAWL BRACKET
(a) Remove the 2 bolts and parking lock pawl bracket.
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U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE UNITAX–187
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24. REMOVE MANUAL VALVE LEVER SUB-ASSEMBLY
(a) Using a chisel and hammer, cut off and remove the
spacer.
(b) Using a pin punch (
35 mm) and hammer, drive out
the pin.
HINT:
Slowly drive out the pin so that it will not fall into the
transaxle case.
(c) Remove the manual valve lever shaft and manual
valve lever.
25. REMOVE PARKING LOCK ROD SUB-ASSEMBLY
(a) Remove the parking lock rod from the manual valve
lever.
26. REMOVE MANUAL VALVE LEVER SHAFT OIL SEAL
(a) Using a screwdriver, remove the oil seal from the
transaxle case.
NOTICE:
Do not apply excessive force when removing
the oil seal.
27. FIX AUTOMATIC TRANSAXLE ASSEMBLY
(a) Fix the transaxle case with the oil pump side facing
up.
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AX–188U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE UNIT
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28. INSPECT INPUT SHAFT ENDPLAY
HINT:
(See page AX-204)
29. REMOVE TRANSAXLE HOUSING
(a) Remove the 16 bolts.
(b) Tap on the circumference of the transaxle housing
with a plastic hammer to remove the transaxle
housing from the transaxle case.
NOTICE:
The differential may be accidentally removed
when the transaxle housing is removed.
30. REMOVE OIL PUMP ASSEMBLY
(a) Remove the 7 bolts and oil pump from the transaxle
case.
31. REMOVE THRUST NEEDLE ROLLER BEARING
(a) Remove the thrust needle roller bearing from the
underdrive planetary gear assembly.
32. REMOVE THRUST BEARING UNDERDRIVE RACE
NO.2
(a) Remove the thrust bearing underdrive race No.2
from the underdrive planetary gear assembly.
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33. REMOVE DIFFERENTIAL GEAR ASSEMBLY
(a) Remove the differential gear assembly from the
transaxle case.
34. REMOVE OVERDRIVE BRAKE GASKET
(a) Remove the 2 overdrive brake gaskets from the
transaxle case.
35. REMOVE FORWARD CLUTCH ASSEMBLY
(a) Remove the forward clutch assembly from the
transaxle case.
(b) Remove the thrust needle roller bearing from the
forward clutch.
36. REMOVE MULTIPLE DISC CLUTCH HUB
(a) Remove the thrust needle roller bearing, multiple
disc clutch hub, thrust needle roller bearing and
thrust bearing race No.1 from the transaxle case.
37. INSPECT MULTIPLE DISC CLUTCH CLUTCH HUB
HINT:
(See page AX-201)
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AX–190U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE UNIT
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38. REMOVE UNDERDRIVE PLANETARY GEAR
ASSEMBLY
(a) Remove the bolt and pawl shaft clamp.
(b) Remove the parking lock pawl shaft.
(c) Push the parking lock pawl.
HINT:
Failure to do so will cause interference when the
underdrive planetary gear is removed.
(d) Remove the underdrive planetary gear assembly
from the transaxle case.
NOTICE:
Be careful so that the underdrive planetary gear
assembly will not fall out.
39. REMOVE PARKING LOCK PAWL
(a) Remove the spring, pawl pin and parking lock pawl.
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U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE UNITAX–191
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40. REMOVE UNDERDRIVE CLUTCH ASSEMBLY
(a) Remove the underdrive clutch assembly, thrust
bearing and bearing race from the transaxle case.
41. REMOVE UNDERDRIVE 1-WAY CLUTCH ASSEMBLY
(a) Using a screwdriver, remove the snap ring from the
transaxle case.
NOTICE:
Do not apply excessive force when removing
the snap ring.
(b) Remove the underdrive 1-way clutch from the
transaxle case.
(c) Remove the outer race retainer from the 1-way
clutch.
42. REMOVE UNDERDRIVE CLUTCH DISC NO.2
(a) Using a screwdriver, remove the snap ring.
NOTICE:
Do not apply excessive force when removing
the snap ring.
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AX–192U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE UNIT
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(b) Remove the flange, 4 discs and 4 plates from the
transaxle case.
43. INSPECT UNDERDRIVE CLUTCH DISC NO.2
HINT:
(See page AX-201)
44. REMOVE TRANSAXLE REAR COVER SUB-
ASSEMBLY
(a) Remove the 11 bolts.
(b) Tap on the circumference of the rear cover with a
plastic hammer to remove the transaxle rear cover
from the transaxle case.
45. REMOVE TRANSAXLE CASE NO.1 PLUG
(a) Remove the 4 transaxle case No.1 plugs from the
transaxle rear cover.
(b) Remove the 4 O-rings from the 4 transaxle case
No.1 plugs.
46. REMOVE REAR CLUTCH OIL SEAL RING OUTER
(a) Remove the 3 rear clutch oil seal rings from the
transaxle rear cover.
47. REMOVE NEEDLE-ROLLER BEARING
(a) Using SST, remove the needle-roller bearing from
the transaxle rear cover.
SST 09387-00041 (09387-01021, 09387-01030,
09387-01040)
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U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE UNITAX–193
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48. REMOVE GOVERNOR APPLY GASKET NO.1
(a) Using a screwdriver, remove the 3 apply gaskets.
49. REMOVE BRAKE APPLY TUBE
(a) Remove the bolt, clamp and brake apply tube.
(b) Remove the clutch apply tube.
(c) Remove the brake apply tube from the clamp.
NOTICE:
Do not bend the tubes.
50. REMOVE DIRECT CLUTCH ASSEMBLY
(a) Remove the thrust bearing and the direct clutch
assembly from the transaxle case.
51. REMOVE OVERDRIVE DIRECT CLUTCH HUB SUB-
ASSEMBLY
(a) Remove the thrust bearing race, thrust bearing and
overdrive direct clutch hub from the planetary gear
assembly.
52. INSPECT OVERDRIVE DIRECT CLUTCH DRUM SUB-
ASSEMBLY
HINT:
(See page AX-202)
53. REMOVE REAR PLANETARY SUN GEAR ASSEMBLY
(a) Remove the rear planetary sun gear assembly from
the transaxle case.
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AX–194U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE UNIT
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(b) Remove the thrust needle roller bearing and thrust
bearing race from the rear planetary sun gear
assembly.
(c) Remove the planetary carrier thrust washer No.2
from the rear planetary sun gear assembly.
54. REMOVE 1-WAY CLUTCH ASSEMBLY
(a) Remove the 1-way clutch assembly and the thrust
needle roller bearing from the transaxle case.
(b) Remove the 1-way clutch inner race from the 1-way
clutch assembly.
55. REMOVE 1-WAY CLUTCH SLEEVE OUTER
(a) Remove the 1-way clutch sleeve outer from the
transaxle case.
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56. REMOVE PLANETARY CARRIER THRUST WASHER
NO.1
(a) Remove the planetary carrier thrust washer No.1
from the planetary gear assembly.
57. REMOVE 2ND BRAKE CLUTCH DISC
(a) Using a screwdriver, remove the snap ring.
(b) Remove the flange, 4 discs and 4 plates from the
transaxle case.
58. INSPECT 2ND BRAKE CLUTCH DISC
HINT:
(See page AX-202)
59. REMOVE 2ND BRAKE PISTON ASSEMBLY
(a) Using a screwdriver, remove the snap ring.
(b) Remove the 2ND brake piston assembly from the
transaxle case.
60. REMOVE REAR PLANETARY GEAR ASSEMBLY
(a) Using a screwdriver, remove the snap ring.
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