TOYOTA SIENNA 2007 Service Repair Manual

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

POWER STEERING – RACK AND PINION POWER STEERING GEARPS–21
PS
STEERING
POWER STEERING
RACK AND PINION POWER STEERING GEAR
COMPONENTS
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PS–22POWER STEERING – RACK AND PINION POWER STEERING GEAR
PS
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POWER STEERING – RACK AND PINION POWER STEERING GEARPS–23
PS
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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–25
PS
8. REMOVE FRONT STABILIZER BRACKET NO.1 LH
(a) Remove the 2 bolts and remove the stabilizer
bracket No. 1.
9. REMOVE FRONT STABILIZER BRACKET NO.1 RH
HINT:
Perform the same procedure on the other side.
10. DISCONNECT PRESSURE FEED TUBE ASSEMBLY
(a) Remove the clip and disconnect the return tube
assembly from the power steering gear assembly.
(b) Using SST, disconnect the pressure feed tube
assembly from the power steering gear assembly.
SST 09023-12701
(c) Remove the bolt and separate the tube clamp.
D030615E05
D029970
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PS–26POWER STEERING – RACK AND PINION POWER STEERING GEAR
PS
(d) Remove the nut and separate the tube clamp.
11. REMOVE RACK & PINION POWER STEERING GEAR
ASSEMBLY
(a) Remove the 2 bolts, nuts and the power steering
gear assembly.
NOTICE:
Do not damage the 2 pressure tubes.
DISASSEMBLY
1. REMOVE RETURN TUBE NO.2
(a) Using SST, remove the return tube No. 2.
SST 09023-12701
2. REMOVE STEERING LEFT TURN PRESSURE TUBE
(a) Using SST, remove the left turn pressure tube.
SST 09023-38201
(b) Remove the 2 O-rings from the left turn pressure
tube.
3. REMOVE STEERING RIGHT TURN PRESSURE TUBE
SST 09023-38201
HINT:
Perform the same procedure on the other side.
4. FIX RACK & PINION POWER STEERING GEAR
ASSEMBLY
(a) Using SST, secure the power steering gear
assembly.
SST 09612-00012
HINT:
Tape the SST before use.
D029975
D029979
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POWER STEERING – RACK AND PINION POWER STEERING GEARPS–27
PS
5. REMOVE TIE ROD ASSEMBLY LH
(a) Place matchmarks on the tie rod assembly and rack
end sub-assembly.
(b) Loosen the lock nut, and remove the tie rod
assembly and lock nut.
6. REMOVE TIE ROD ASSEMBLY RH
HINT:
Perform the same procedure on the other side.
7. REMOVE STEERING RACK BOOT CLIP
(a) Remove the 2 rack boot clips.
8. REMOVE STEERING RACK BOOT NO.2 CLAMP
(a) Using pliers, remove the rack boot No. 2 clamp.
NOTICE:
Be careful not to damage the steering rack boot
No. 2.
9. REMOVE STEERING RACK BOOT NO.1 CLAMP
HINT:
Perform the same procedure on the other side.
10. REMOVE STEERING RACK BOOT NO.2
11. REMOVE STEERING RACK BOOT NO.1
12. REMOVE STEERING RACK END SUB-ASSEMBLY
(a) Using a screwdriver and a hammer, unstake the
claw washer.
NOTICE:
Avoid any impact to the power steering rack.
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PS–28POWER STEERING – RACK AND PINION POWER STEERING GEAR
PS
(b) Using 2 SST, remove the 2 steering rack end sub-
assembly and 2 claw washers.
SST 09922-10010
NOTICE:
• Use SST 09922-10010 in the direction shown
in the illustration.
• Securely hold the power steering rack end
with a SST.
13. REMOVE RACK GUIDE
(a) Using SST, remove the rack guide spring cap nut.
SST 09922-10010
NOTICE:
Use SST 09922-10010in the direction shown in
the illustration.
(b) Using SST, remove the rack guide spring cap.
SST 09631-10021
(c) Remove the compression spring and the rack guide.
14. REMOVE POWER STEERING CONTROL VALVE
(a) Using a socket wrench (27 mm), remove the rack
housing cap.
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F041500E01
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POWER STEERING – RACK AND PINION POWER STEERING GEARPS–29
PS
(b) Using SST, hold the control valve and remove the
nut.
SST 09616-00011
(c) Wind vinyl tape around the serrated part of the
control valve.
(d) Remove the dust cover from the control valve
housing.
(e) Remove the 2 bolts and the control valve w/ control
valve housing.
(f) Remove the gasket.
(g) To prevent oil seal lip damage, wind vinyl tape
around the serrated part of the control valve.
(h) Using a plastic hammer, remove the control valve w/
oil seal from the control valve housing.
(i) Remove the oil seal from the control valve.
(j) Using a screwdriver, remove the 4 control valve
rings.
NOTICE:
Be careful not to damage the grooves for the
control valve rings.
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F045545
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