2007 TOYOTA SIENNA power steering fluid

PS–18POWER STEERING – VANE PUMP
PS
(c) Install the vane pump rear housing to the vane
pump front housing with the 4 bolts.
Torque: 22 N*m (224 kgf*cm, 16 ft.*lbf)
8. INSPECT TOTAL PRELOAD (See page PS-14)
9. INSTALL FLOW CONTROL VALVE ASSEMBLY
(a) Coat the flow control valve assembly with power
steering fluid.
(b) Install the flow control valve compression spring and
the flow control valve assembly to the vane pump
front housing.
(c) Coat a new O-ring with power steering fluid and
install it onto the pressure port union.
(d) Install the pressure port union to the vane pump
front housing.
Torque: 69 N*m (704 kgf*cm, 51 ft.*lbf)
10. INSTALL POWER STEERING FLUID PRESSURE
SWITCH
(a) Coat the O-ring attached to the new power steering
fluid pressure switch with power steering fluid.
(b) Install the power steering fluid pressure switch to
the vane pump front housing.
Torque: 21 N*m (214 kgf*cm, 16 ft.*lbf)
NOTICE:
Do not use a power steering fluid pressure
switch that has been subjected to an impact; for
example, a power steering fluid pressure switch
that has been dropped.
11. INSTALL POWER STEERING SUCTION PORT UNION
(a) Coat a new O-ring with power steering fluid and
install it to the power steering suction port union.
(b) Install the power steering suction port union to the
vane pump front housing with the bolt.
Torque: 12 N*m (122 kgf*cm, 9 ft.*lbf)
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C133179

POWER STEERING – VANE PUMPPS–19
PS
INSTALLATION
1. INSTALL VANE PUMP ASSEMBLY
(a) Temporarily install the bolt to the vane pump
assembly.
(b) Install the vane pump assembly.
(c) Temporarily install the bolt (B).
(d) Using SST, tighten the 2 bolts.
SST 09249-63010
Torque: Without SST
43 N*m (439 kgf*cm, 32 ft.*lbf)
With SST
29 N*m (294 kgf*cm, 21 ft.*lbf)
NOTICE:
• Use a torque wrench with a fulcrum length of
300 mm (11.81 in.).
• This torque value is accurate when SST is
parallel to the torque wrench.
2. CONNECT POWER STEERING FLUID PRESSURE
SWITCH CONNECTOR
(a) Connect the connector to the power steering fluid
pressure switch.
3. CONNECT PRESSURE FEED TUBE ASSEMBLY
(a) Install a new gasket to the pressure feed tube
assembly.
C135238
C159000E01
C161547

PS–20POWER STEERING – VANE PUMP
PS
(b) Temporarily connect the pressure feed tube
assembly to the vane pump assembly with the union
bolt.
(c) Fully tighten the union bolt.
Torque: 50 N*m (510 kgf*cm, 37 ft.*lbf)
NOTICE:
Make sure that the stopper of the pressure feed
tube assembly contacts the vane pump
assembly securely as shown in the illustration.
4. CONNECT NO. 1 FLUID RESERVOIR TO PUMP HOSE
(a) Connect the No. 1 fluid reservoir to pump hose to
the vane pump assembly with the clip.
NOTICE:
• Connect the No. 1 fluid reservoir to pump
hose with the paint mark facing toward the
rear of the vehicle.
• Push the No. 1 fluid reservoir to pump hose
as far as it goes as shown in the illustration.
• Install the clip at the position specified in the
illustration.
5. INSTALL FAN AND GENERATOR V BELT (See page
EM-7)
6. ADD POWER STEERING FLUID
7. BLEED POWER STEERING SYSTEM (See page PS-6)
8. CHECK POWER STEERING FLUID LEVEL (See page
PS-2)
9. INSPECT FOR POWER STEERING FLUID LEAK
10. INSTALL FRONT FENDER APRON SEAL RH (See
page EM-62)
11. INSTALL FRONT WHEEL RH
Torque: 103 N*m (1,050 kgf*cm, 76 ft.*lbf)
C161548
C133183E02

PS–24POWER STEERING – RACK AND PINION POWER STEERING GEAR
PS
REMOVAL
NOTICE:
When installing, coat the parts indicated by the arrows
with power steering fluid or molybdenum disulfide
lithium base grease (See page PS-21).
1. INSPECT CENTER FRONT WHEEL
2. REMOVE FRONT WHEEL
3. SEPARATE TIE ROD ASSEMBLY LH
SST 09628-62011
4. SEPARATE TIE ROD ASSEMBLY RH
SST 09628-62011
HINT:
Perform the same procedure on the other side.
5. SEPARATE STEERING INTERMEDIATE SHAFT
ASSEMBLY
(a) Fix the steering wheel with the seat belt.
(b) Release the 3 springs and separate the dust cover.
(c) Place matchmarks on the intermediate shaft
assembly and power steering gear assembly.
(d) Remove the bolt and separate the intermediate
shaft assembly.
6. SEPARATE FRONT STABILIZER LINK ASSEMBLY LH
7. SEPARATE FRONT STABILIZER LINK ASSEMBLY
RH
HINT:
Perform the same procedure on the other side.
D030613
D030704E03
D029986E03

POWER STEERING – RACK AND PINION POWER STEERING GEARPS–31
PS
20. REMOVE RACK STEERING PISTON RING
(a) Using a screwdriver, remove the rack steering
piston ring and O-ring.
NOTICE:
Be careful not to damage the grooves for rack
steering piston ring.
INSPECTION
1. INSPECT POWER STEERING RACK
(a) Using a dial indicator, check the power steering rack
for runout and for teeth wear and damage.
Maximum runout:
0.3 mm (0.012 in.)
If necessary, replace the rack & pinion power
steering gear assembly.
(b) Check the back surface for wear and damage.
If necessary, replace the rack & pinion power
steering gear assembly.
2. INSPECT TIE ROD ASSEMBLY LH
(a) Secure the tie rod assembly in a vise.
(b) Install the nut to the stud bolt.
(c) Flip the ball joint stud back and forth 5 times.
(d) Using a torque wrench, turn the nut continuously at
a rate of 3 to 5 seconds per turn and take the torque
reading on the 5th turn.
Torque: Turning torque
0.83 to 3.43 N*m (8.5 to 35.0 kgf*cm, 7.3
to 30.4 in.*lbf)
3. INSPECT TIE ROD ASSEMBLY RH
HINT:
Perform the same procedure on the other side.
REASSEMBLY
1. INSTALL RACK STEERING PISTON RING
(a) Coat a new O-ring with power steering fluid and
install it onto the power steering rack.
(b) Expand a new rack steering piston ring with your
fingers.
NOTICE:
Be careful not to over expand the rack steering
piston ring.
(c) Coat a new rack steering piston ring with power
steering fluid.
R010955
ZX09355
ZK08184
C003629

PS–32POWER STEERING – RACK AND PINION POWER STEERING GEAR
PS
(d) Install the rack steering piston ring onto the power
steering rack, and settle it down with your fingers.
2. INSTALL POWER STEERING CYLINDER TUBE OIL
SEAL
(a) Coat a new cylinder tube oil seal lip with power
steering fluid.
(b) Using SST and a press, install the cylinder tube oil
seal.
SST 09950-60010 (09951-00420, 09951-00250,
09952-06010), 09950-70010 (09951-07360)
NOTICE:
• Make sure that the cylinder tube oil seal is
installed facing in the correct direction.
• Take care so that the cylinder tube oil seal
will not be reversed as you install it.
3. INSTALL POWER STEERING RACK
(a) Install SST onto the power steering rack.
SST 09631-33010
HINT:
If necessary, scrape the burrs off the power steering
rack teeth end and burnish.
(b) Coat the SST with power steering fluid.
(c) Install the power steering rack into the rack housing.
(d) Remove the SST.
N000401
F040545E06
W002101E12

POWER STEERING – RACK AND PINION POWER STEERING GEARPS–33
PS
4. INSTALL POWER STEERING RACK BUSH
(a) Using SST and a press, install the rack bush oil seal
onto the rack bush.
SST 09950-60010 (09951-00400), 09950-70010
(09951-07100)
NOTICE:
Make sure that the rack bush oil seal is installed
facing in the correct direction.
(b) Coat a new O-ring with power steering fluid and
install it onto the rack bush.
(c) To prevent rack bush oil seal lip damage, wind vinyl
tape around the rack end, and apply power steering
fluid.
(d) Install the rack bush onto the power steering rack.
5. INSTALL CYLINDER END STOPPER
(a) Align the installation hole for the wire of the cylinder
end stopper with the slot of the rack housing.
(b) Install a new wire into the cylinder end stopper.
(c) Using a screwdriver, turn the cylinder end stopper
counterclockwise by 450 +- 50
.
6. AIR TIGHTNESS TEST
(a) Install SST onto the rack housing.
SST 09631-12071 (09633-00010)
(b) Apply vacuum of 53 kPa (400 mmHg, 15.75 in.Hg)
for about 30 seconds.
(c) Check that there is no change in the vacuum.
If there is a change in the vacuum, check the
installation of the oil seals.
7. INSTALL POWER STEERING CONTROL VALVE
UPPER OIL SEAL
(a) Coat a control valve upper bearing and a new
control valve upper oil seal with power steering fluid.
(b) Using SST and a press, install the control valve
upper oil seal.
SST 09950-70010 (09951-07150), 09950-60010
(09951-00180, 09952-06010, 09951-00320)
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F040546E07
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PS–34POWER STEERING – RACK AND PINION POWER STEERING GEAR
PS
(c) Using SST and a press, install the control valve
upper bearing.
SST 09950-70010 (09951-07150), 09950-60010
(09951-00180, 09952-06010, 09951-00340)
8. INSTALL POWER STEERING CONTROL VALVE
(a) Expand 4 new control valve rings with your fingers.
NOTICE:
Be careful not to over expand the control valve
rings.
(b) Coat the 4 control valve rings with power steering
fluid.
(c) Install the 4 control valve rings onto the control
valve, and settle them down with your fingers.
(d) Carefully slide the tapered end of SST over the
control valve rings until they fit to the control valve.
SST 09631-20081
NOTICE:
Be careful not to damage the control valve rings.
(e) To prevent control valve upper oil seal lip damage,
wind vinyl tape around the serrated part of the
control valve.
(f) Coat the control valve upper oil seal lip with power
steering fluid.
(g) Install the control valve onto the control valve
housing.
NOTICE:
Be careful not to damage the control valve ring
and control valve upper oil seal lip.
(h) Coat a new oil seal lip with power steering fluid.
(i) Using SST and a press, install the oil seal.
SST 09612-22011
NOTICE:
Make sure that the oil seal is installed facing in
the correct direction.
(j) Apply grease to the needle roller bearing.
(k) Install a new gasket onto the control valve housing.
(l) Wind vinyl tape around the serrated part of the
control valve.
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