2007 TOYOTA SIENNA Service Repair Manual

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TOYOTA SIENNA 2007  Service Repair Manual U151E AUTOMATIC TRANSAXLE  –  AUTOMATIC TRANSAXLE UNITAX–197
AX
79. REMOVE UNDERDRIVE OUTPUT SHAFT OIL SEAL 
RING
(a) Remove the oil seal ring from the transaxle housing.
80. REMOVE DIFFERENTIAL G

Page 1642 of 3000

TOYOTA SIENNA 2007  Service Repair Manual AX–198U151E AUTOMATIC TRANSAXLE  –  AUTOMATIC TRANSAXLE UNIT
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3. INSPECT OVERDRIVE DIRECT CLUTCH DRUM SUB-
ASSEMBLY
(a) Using a dial indicator, measure the inside diameter 
of the forward clutch

Page 1643 of 3000

TOYOTA SIENNA 2007  Service Repair Manual U151E AUTOMATIC TRANSAXLE  –  AUTOMATIC TRANSAXLE UNITAX–199
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7. INSPECT UNDERDRIVE BRAKE RETURN SPRING 
SUB-ASSEMBLY
(a) Using a vernier calipers, measure the free length of 
the spring togethe

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TOYOTA SIENNA 2007  Service Repair Manual AX–200U151E AUTOMATIC TRANSAXLE  –  AUTOMATIC TRANSAXLE UNIT
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10. INSPECT PACK CLEARANCE OF UNDERDRIVE 
BRAKE
(a) Using a dial indicator, measure the underdrive brake 
pack clearance while apply

Page 1645 of 3000

TOYOTA SIENNA 2007  Service Repair Manual AX–242U151E AUTOMATIC TRANSAXLE  –  FORWARD CLUTCH
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(d) Remove the forward clutch return spring from the 
input shaft.
4. REMOVE FORWARD CLUTCH RETURN SPRING 
SUB-ASSEMBLY
(a) Place the forward

Page 1646 of 3000

TOYOTA SIENNA 2007  Service Repair Manual U151E AUTOMATIC TRANSAXLE  –  FORWARD CLUTCHAX–243
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2. INSPECT FORWARD MULTIPLE DISC CLUTCH DISC
(a) Check if the sliding surface of the disc, plate and 
flange are worn or burnt.
If necessary,

Page 1647 of 3000

TOYOTA SIENNA 2007  Service Repair Manual AX–232U151E AUTOMATIC TRANSAXLE  –  OIL PUMP
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TRANSMISSION
U151E AUTOMATIC TRANSAXLE
OIL PUMP
COMPONENTS
C114866E01

Page 1648 of 3000

TOYOTA SIENNA 2007  Service Repair Manual U151E AUTOMATIC TRANSAXLE  –  OIL PUMPAX–233
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DISASSEMBLY
1. INSPECT OIL PUMP ASSEMBLY
HINT:
(See page AX-234)
2. REMOVE CLUTCH DRUM OIL SEAL RING
(a) Remove the 2 clutch drum oil seal rings.
3.