suspension TOYOTA SIENNA 2007 Service Workshop Manual

SP–20SUSPENSION – FRONT SHOCK ABSORBER WITH COIL SPRING
SP
DISPOSAL
1. DISPOSE OF SHOCK ABSORBER ASSEMBLY
FRONT LH
HINT:
Dispose the RH side by the same procedures as the LH
side.
(a) Fully extend the shock absorber rod.
(b) Using a drill, make a hole in the cylinder as shown in
the illustration to discharge the gas inside.
CAUTION:
• When drilling, chips may fly out, work
carefully.
• The gas is colorless, odorless and non-
poisonous.
F045557E01

SP–28SUSPENSION – FRONT STABILIZER BAR (for 2WD)
SP
REMOVAL
1. REMOVE FRONT WHEELS
2. REMOVE FRONT STABILIZER LINK ASSEMBLY LH
(a) Remove the 2 nuts and front stabilizer link assembly
LH.
HINT:
If the ball joint turns together with the nut, use a
hexagon (6 mm) wrench to hold the stud.
3. REMOVE FRONT STABILIZER LINK ASSEMBLY RH
HINT:
Remove the RH side by the same procedures as the LH
side.
4. REMOVE FRONT STABILIZER BRACKET NO.1 LH
(a) Remove the 2 bolts and the front stabilizer bracket
No.1 LH.
5. REMOVE FRONT STABILIZER BRACKET NO.1 RH
HINT:
Remove the RH side by the same procedures as the LH
side.
6. SEPARATE TIE ROD ASSEMBLY LH
HINT:
(See page AH-4)
SST 09628-62011
7. SEPARATE TIE ROD ASSEMBLY RH
SST 09628-62011
HINT:
Separate the RH side by the same procedures as the LH
side.
8. DISCONNECT PRESSURE FEED TUBE ASSEMBLY
HINT:
(See page PS-21)
SST 09023-12701
9. SEPARATE STEERING INTERMEDIATE SHAFT
ASSEMBLY
HINT:
(See page PS-21)
10. REMOVE RACK & PINION POWER STEERING GEAR
ASSEMBLY
HINT:
(See page PS-21)
11. REMOVE FRONT STABILIZER BAR BUSH NO.1
12. REMOVE STABILIZER BAR FRONT
F045195
F044993

SUSPENSION – FRONT STABILIZER BAR (for 2WD)SP–29
SP
INSPECTION
1. INSPECT FRONT STABILIZER LINK ASSEMBLY LH
(a) As shown in the illustration, flip the ball joint stud
back and forth 5 times, before installing the nut.
(b) Using a torque wrench, turn the nut continuously at
a rate of 2 to 4 seconds per 1 turn and take the
torque reading on the 5th turn.
Turning torque:
0.05 to 1.96 N*m (0.5 to 20kgf*cm, 0.4 to 17.4
in.*lbf)
C066721

SUSPENSION – FRONT LOWER SUSPENSION ARMSP–19
SP
SUSPENSION & AXLE
SUSPENSION
FRONT LOWER SUSPENSION ARM
COMPONENTS
C119465E01

SP–20SUSPENSION – FRONT LOWER SUSPENSION ARM
SP
REMOVAL
1. REMOVE ENGINE ASSEMBLY WITH TRANSAXLE
HINT:
(See page EM-34)
2. REMOVE TRANSVERSE ENGINE ENGINE
MOUNTING INSULATOR
(a) Remove the 3 nuts and transverse engine engine
mounting insulator.
3. REMOVE FRONT SUSPENSION ARM SUB-
ASSEMBLY LOWER NO.1 LH
(a) Remove the 2 bolts on the front side of the front
suspension arm sub-assembly lower No.1 LH.
(b) Remove the bolt and nut on the rear side of the front
suspension arm sub-assembly lower No.1 LH.
(c) Remove the front suspension arm sub-assembly
lower No.1 LH.
(d) Remove the front lower arm bush stopper from the
front suspension arm sub-assembly lower No.1 LH.
C083387
F044964
F044965

SP–30SUSPENSION – FRONT STABILIZER BAR (for 2WD)
SP
INSTALLATION
1. INSTALL STABILIZER BAR FRONT
2. INSTALL FRONT STABILIZER BAR BUSH NO.1
(a) Install the front stabilizer bar bush No. 1.
HINT:
Install the bushing to the outer side of the bushing
stopper on the stabilizer bar as shown in the
illustration.
3. INSTALL STEERING INTERMEDIATE SHAFT
ASSEMBLY
HINT:
(See page PS-21)
4. INSTALL RACK & PINION POWER STEERING GEAR
ASSEMBLY
HINT:
(See page PS-21)
5. CONNECT PRESSURE FEED TUBE ASSEMBLY
HINT:
(See page PS-21)
SST 09023-12701
6. INSTALL TIE ROD ASSEMBLY LH
HINT:
(See page AH-4)
7. INSTALL TIE ROD ASSEMBLY RH
HINT:
Install the RH side by the same procedures as the LH
side.
8. INSTALL FRONT STABILIZER BRACKET NO.1 LH
(a) Install the front stabilizer bracket No.1 LH with the 2
bolts.
Torque: 17 N*m (173 kgf*cm, 12 ft.*lbf)
9. INSTALL FRONT STABILIZER BRACKET NO.1 RH
HINT:
Install the RH side by the same procedures as the LH
side.
10. INSTALL FRONT STABILIZER LINK ASSEMBLY LH
(a) Install the front stabilizer link assembly LH with the 2
nuts.
Torque: 74 N*m (755 kgf*cm, 55 ft.*lbf)
HINT:
If the ball joint turns together with the nut, use a
hexagon (6 mm) wrench to hold the stud.
11. INSTALL FRONT STABILIZER LINK ASSEMBLY RH
HINT:
Install the RH side by the same procedures as the LH
side.
12. INSTALL FRONT WHEELS
Torque: 103 N*m (1,050 kgf*cm, 76 ft.*lbf)
13. INSPECT CENTER FRONT WHEEL
F044992E01
F044993

SUSPENSION – FRONT STABILIZER BAR (for 2WD)SP–31
SP
14. INSPECT STEERING WHEEL CENTER POINT
15. ADD POWER STEERING FLUID
16. BLEED POWER STEERING FLUID
HINT:
(See page SP-26)
17. CHECK POWER STEERING FLUID LEAKAGE
18. INSPECT AND ADJUST FRONT WHEEL ALIGNMENT
HINT:
(See page SP-4)

SP–24SUSPENSION – FRONT LOWER BALL JOINT
SP
REMOVAL
1. REMOVE FRONT WHEEL
2. REMOVE FRONT AXLE HUB LH NUT
HINT:
(See page AH-4)
SST 09930-00010
3. SEPARATE SPEED SENSOR FRONT LH
HINT:
(See page AH-4)
4. SEPARATE FRONT DISC BRAKE CALIPER
ASSEMBLY LH
HINT:
(See page AH-4)
5. REMOVE FRONT DISC
6. SEPARATE TIE ROD ASSEMBLY LH
HINT:
(See page AH-4)
SST 09628-62011
7. SEPARATE FRONT SUSPENSION ARM SUB-
ASSEMBLY LOWER NO.1 LH
HINT:
(See page AH-4)
8. REMOVE FRONT AXLE ASSEMBLY LH
HINT:
(See page AH-4)
9. REMOVE LOWER BALL JOINT ASSEMBLY FRONT
LH
(a) Remove the cotter pin and nut.
(b) Using SST, remove the lower ball joint assembly
front LH.
SST 09628-62011
INSPECTION
1. INSPECT LOWER BALL JOINT ASSEMBLY FRONT
LH
(a) As shown in the illustration, flip the ball joint stud
back and forth 5 times, before installing the nut.
(b) Using a torque wrench, turn the nut continuously at
a rate of 3 - 5 seconds per 1 turn and take the
torque reading on the 5th turn.
Turning torque:
0.98 to 3.43 N*m (10 to 35 kgf*cm, 8.7 to 30
in.*lbf)
F040153E04
ZX01712

SUSPENSION – FRONT LOWER BALL JOINTSP–25
SP
INSTALLATION
1. INSTALL LOWER BALL JOINT ASSEMBLY FRONT
LH
(a) Install the lower ball joint assembly front LH and
tighten the nut.
Torque: 123 N*m (1,250 kgf*cm, 91 ft.*lbf)
(b) Install a new cotter pin.
NOTICE:
If the holes for the cotter pin are not aligned,
tighten the nut further up to 60
.
2. INSTALL FRONT AXLE ASSEMBLY LH
HINT:
(See page AH-4)
3. INSTALL FRONT SUSPENSION ARM SUB-
ASSEMBLY LOWER NO.1 LH
HINT:
(See page AH-4)
4. INSTALL TIE ROD ASSEMBLY LH
HINT:
(See page AH-4)
5. INSTALL FRONT DISC
6. INSTALL FRONT DISC BRAKE CALIPER ASSEMBLY
LH
HINT:
(See page AH-4)
7. INSTALL SPEED SENSOR FRONT LH
HINT:
(See page AH-4)
8. INSTALL FRONT AXLE HUB LH NUT
HINT:
(See page AH-4)
9. INSTALL FRONT WHEEL
Torque: 103 N*m (1,050 kgf*cm, 76 ft.*lbf)
10. INSPECT AND ADJUST FRONT WHEEL ALIGNMENT
HINT:
(See page SP-4)
11. CHECK ABS SPEED SENSOR SIGNAL
w/o VSC: (See page BC-2).
w/ VSC: (See page BC-68).

SUSPENSION – FRONT STABILIZER BAR (for 4WD)SP–35
SP
REMOVAL
1. REMOVE FRONT WHEELS
2. REMOVE FRONT STABILIZER LINK ASSEMBLY LH
HINT:
(See page SP-26)
3. REMOVE FRONT STABILIZER LINK ASSEMBLY RH
HINT:
Remove the RH side by the same procedures as the LH
side.
4. REMOVE CENTER EXHAUST PIPE ASSEMBLY
HINT:
(See page EX-8)
5. REMOVE NO. 1 FRONT STABILIZER BRACKET LH
(a) Remove the 2 bolts, the front stabilizer bracket No.1
LH and the front stabilizer bracket No.2 LH.
6. REMOVE NO. 1 FRONT STABILIZER BRACKET RH
HINT:
Remove the RH side by the same procedures as the LH
side.
7. SEPARATE TIE ROD ASSEMBLY LH
HINT:
(See page AH-4)
SST 09628-62011
8. SEPARATE TIE ROD ASSEMBLY RH
SST 09628-62011
HINT:
Remove the RH side by the same procedures as the LH
side.
9. SEPARATE PRESSURE FEED TUBE ASSEMBLY
HINT:
(See page PS-21)
SST 09023-12701
10. SEPARATE STEERING INTERMEDIATE SHAFT
ASSEMBLY
HINT:
(See page PS-21)
11. REMOVE RACK & PINION POWER STEERING GEAR
ASSEMBLY
HINT:
(See page PS-21)
12. REMOVE MANIFOLD STAY
HINT:
(See page EM-39)
13. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY RH
HINT:
(See page EM-37)
14. REMOVE NO. 1 FRONT STABILIZER BAR BUSHING
F044966