2007 TOYOTA SIENNA differential

AX–266U151E AUTOMATIC TRANSAXLE – DIFFERENTIAL CASE
AX
TRANSMISSION
U151E AUTOMATIC TRANSAXLE
DIFFERENTIAL CASE
COMPONENTS
C114871E03

U151E AUTOMATIC TRANSAXLE – DIFFERENTIAL CASEAX–267
AX
DISASSEMBLY
1. REMOVE FRONT DIFFERENTIAL RING GEAR
(a) Place matchmarks on the front differential ring gear
and differential case.
(b) Remove the 14 bolts.
(c) Using a plastic hammer, tap on the front differential
ring gear to remove it from the case.
2. REMOVE FRONT DIFFERENTIAL CASE FRONT
TAPERED ROLLER BEARING
(a) Using SST, remove the front differential case front
differential tapered roller bearing from the
differential case.
SST 09950-00020, 09950-00030, 09950-60010
(09951-00490), 09950-40011 (09957-04010)
(b) Using SST, remove the front differential case front
tapered roller bearing outer race.
SST 09308-00010
D026445E03
D026446E01
C050237E01
D025595E01
D025596E02

AX–268U151E AUTOMATIC TRANSAXLE – DIFFERENTIAL CASE
AX
3. REMOVE FRONT DIFFERENTIAL CASE REAR
TAPERED ROLLER BEARING
(a) Using SST, remove the front differential case rear
tapered roller bearing from the differential case.
SST 09950-00020, 09950-00030, 09950-60010
(09951-00490), 09950-40011 (09957-
04010), 09308-00010
(b) Using SST, remove the front differential case rear
tapered roller bearing outer race.
SST 09308-00010
4. REMOVE FRONT DIFFERENTIAL PINION SHAFT
STRAIGHT PIN
(a) Using a pin punch and hammer, install the straight
pin.
NOTICE:
Before removing the straight pin, unstake it with
a pin punch.
5. REMOVE FRONT DIFFERENTIAL PINION SHAFT
NO.1
(a) Remove the front differential pinion shaft No.1 from
the differential case.
6. REMOVE FRONT DIFFERENTIAL SIDE GEAR
(a) Remove the 2 front differential pinions, 2 pinion
thrust washers, 2 front differential side gears and 2
side gear thrust washers from the differential case.
D025597E03
D025598E01
C050240
C050241E01
C050242E01

U151E AUTOMATIC TRANSAXLE – DIFFERENTIAL CASEAX–269
AX
7. REMOVE TRANSAXLE HOUSING OIL SEAL
(a) Using SST and a hammer, remove the oil seal.
SST 09950-70010 (09951-07100), 09215-00013
(09215-00471)
8. REMOVE DIFFERENTIAL SIDE BEARING RETAINER
OIL SEAL
(a) Using SST, remove the oil seal.
SST 09950-70010 (09951-07100), 09608-10010
INSPECTION
1. INSPECT BACKLASH
(a) Using a dial indicator, inspect the backlash of the
side gear.
Standard backlash:
0.05 to 0.20 mm (0.0020 to 0.0079 in.)
Thrust washer thickness
REASSEMBLY
1. INSTALL FRONT DIFFERENTIAL SIDE GEAR
(a) Apply ATF to the 2 front differential side gears, 2
side gear thrust washers, 2 front differential pinions
and 2 pinion thrust washers and install them to the
differential case.
D025599E01
D025600E01
C050252
Mark Thickness
- 1.625 mm (0.0640 in.)
- 1.725 mm (0.0679 in.)
- 1.825 mm (0.0719 in.)
C050242E01

AX–270U151E AUTOMATIC TRANSAXLE – DIFFERENTIAL CASE
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2. INSTALL FRONT DIFFERENTIAL PINION SHAFT
NO.1
(a) Coat the front differential pinion shaft No.1 with ATF,
and install it to the differential case.
3. INSPECT BACKLASH
HINT:
(See page AX-269)
4. INSTALL FRONT DIFFERENTIAL PINION SHAFT
STRAIGHT PIN
(a) Using a pin punch and a hammer, install the pinion
shaft straight pin.
(b) Using a chisel and a hammer, stake the differential
case.
NOTICE:
Stake the differential case after adjusting the
backlash.
5. INSTALL FRONT DIFFERENTIAL CASE FRONT
TAPERED ROLLER BEARING
(a) Using SST and a press, install the front differential
case front tapered roller bearing to the differential
case.
SST 09316-12010, 09550-60010 (09951-00490),
09950-70010 (09951-07100)
NOTICE:
Do not damage the bearing cage when installing
the bearing inner race.
(b) Using SST and a hammer, install the front
differential case tapered roller bearing front outer
race to the transaxle housing.
SST 09550-60010 (09951-00490), 09950-60020
(09951-00910)
C050241E01
C050253
C050254
D026447E01
C083736

U151E AUTOMATIC TRANSAXLE – DIFFERENTIAL CASEAX–271
AX
6. INSTALL FRONT DIFFERENTIAL CASE REAR
TAPERED ROLLER BEARING
(a) Using SST and a press, install the front differential
case front tapered roller bearing to the differential
case.
SST 09316-12010, 09550-60010 (09951-00490),
09950-70010 (09951-07100, 09951-07150)
NOTICE:
Do not damage the bearing cage when installing
the bearing inner race.
(b) Using SST and a hammer, install the front
differential case tapered roller bearing rear outer
race to the transaxle housing.
SST 09950-70010 (09951-07100, 09951-07150),
09950-60020 (09951-00890)
NOTICE:
No clearance is allowed between the bearing
and transaxle housing.
7. ADJUST DIFFERENTIAL SIDE BEARING PRELOAD
(a) Install the differential assembly to the transaxle
case.
(b) Clean the mating surfaces of the transaxle case and
transaxle housing.
(c) Install the transaxle housing to the transaxle case
and tighten them with the 16 bolts.
Torque: Bolt A
25 N*m (255 kgf*cm, 18 ft.*lbf)
Bolt B
33 N*m (337 kgf*cm, 24 ft.*lbf)
Bolt C
29 N*m (295 kgf*cm, 21 ft.*lbf)
Bolt D
22 N*m (226 kgf*cm, 16.0 ft.*lbf)
HINT:
Apply seal packing or equivalent to bolts A and D.
Seal packing:
THREE BOND 2403 or equivalent
Bolt length:
Bolt A:
50 mm (1.969 in.)
Bolt B:
50 mm (1.969 in.)
Bolt C:
D026448E02
D026449E01
D026450E01
D026384E02

AX–272U151E AUTOMATIC TRANSAXLE – DIFFERENTIAL CASE
AX
42 mm (1.654 in.)
Bolt D:
72 mm (2.835 in.)
HINT:
Usually, bolt A is non-reusable. In this case,
however, the bolt can be used after cleaning it.
(d) Using SST, turn the differential assembly to the right
and left 2 or 3 times to settle the bearing.
SST 09564-32011
(e) Using SST and a torque wrench, measure the
turning torque of the differential.
SST 09564-32011
Turning torque at 60 rpm:
New bearing:
0.20 to 0.69 N*m (2.0 to 7.0 kgf*cm, 1.8 to 6.1
in.*lbf)
Used bearing:
0.10 to 0.35 N*m (1.0 to 3.6 kgf*cm, 0.9 to 3.1
in.*lbf)
HINT:
If the turning torque is not as specified, refer to the
table below to select a thrust washer so that the
specified value is achieved.
Flange thickness: mm (in.)
(f) Remove the 16 bolts and the transaxle housing.
D025604E01
Mark Thickness Mark Thickness
0 2.00 (0.0787) 9 2.45 (0.0965)
1 2.05 (0.0807) A 2.50 (0.0984)
2 2.10 (0.0827) B 2.55 (0.1004)
3 2.15 (0.0846) C 2.60 (0.1024)
4 2.20 (0.0866) D 2.65 (0.1043)
5 2.25 (0.0886) E 2.70 (0.1063)
6 2.30 (0.0906) F 2.75 (0.1083)
7 2.35 (0.0925) G 2.80 (0.1102)
8 2.40 (0.0945) H 2.85 (0.1122)
D026384

U151E AUTOMATIC TRANSAXLE – DIFFERENTIAL CASEAX–273
AX
(g) Remove the differential assembly.
8. INSTALL FRONT DIFFERENTIAL RING GEAR
(a) Using ATF and heater, heat the front differential ring
gear to 90 to 110
C (194.0 to 230.0F).
NOTICE:
Do not heat the ring gear to more than 110
C
(230.0
F).
(b) Clean the contact surface of the front differential
case.
(c) Align the matchmarks, and install the front
differential ring gear case quickly.
NOTICE:
Do not install the bolts while the ring gear is hot.
(d) Tighten the 14 bolts.
Torque: 95.0 N*m (970 kgf*cm, 70 ft.*lbf)
NOTICE:
Tighten the bolts a little at a time in a diagonal
pattern.
9. INSTALL TRANSAXLE HOUSING OIL SEAL
(a) Using SST and a hammer, install a new oil seal.
SST 09223-15020, 09950-70010 (09951-07150)
(b) Coat the lip of oil seal with a little MP grease.
Oil seal installation depth:
0 +- 0.5 mm (0 +- 0.0197 in.)
D026450E04
D025215E02
D026445E04
D026446
D026451E01