steering wheel LEXUS ES300 2005 Owner's Manual

F41520
SST
OUT Attachment
Pressure Feed
Tube AssyAttachment
IN
Z15498
Oil
Reservoir
PS Vane
Pump PS Gear
SST Closed
Z15499
Oil
Reservoir
PS Vane
Pump PS Gear
SST Open
Z15500
Oil
Reservoir
PS Vane
Pump PS Gear
SST Open Lock Position
- POWER STEERINGPOWER STEERING SYSTEM
51-5
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(f) With the engine idling, close the valve of the SST and ob-
serve the reading on the SST.
Fluid pressure:
7,800 - 8,300 kPa (80 - 85 kgf/cm
2, 1,138 - 1,209 psi)
NOTICE:

Do not keep the valve closed for more than 10 se-
conds.

Do not let the fluid temperature become too high.
(g) With the engine idling, open the valve fully.
(h) Measure the fluid pressure at engine speeds of 1,000 rpm
and 3,000 rpm.
Fluid pressure difference:
490 kPa (5 kgf/cm
2, 71 psi) or less
NOTICE:
Do not turn the steering wheel.
(i) With the engine idling and valve fully opened, turn the
steering wheel to full lock position.
Fluid pressure:
7,800 - 8,300 kPa (80 - 85 kgf/cm
2, 1,138 - 1,209 psi)
NOTICE:

Do not maintain lock position for more than 10 se-
conds.

Do not let the fluid temperature become too high.

F41590
51-6
- POWER STEERINGPOWER STEERING SYSTEM
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(j) Disconnect the SST.
SST 09640- 10010 (09641- 01010, 09641- 01020,
09641-01030)
(k) Connect the pressure feed tube assy to the rack & pinion
power steering gear assy (See page 51-21).
(l) Bleed the power steering system.
5. CHECK STEERING EFFORT
(a) Center the steering wheel assy.
(b) Remove the horn button assy (See page 60-22).
(c) Start the engine and run it at idle.
(d) Using a torque wrench, measure the steering effort in
both directions.
Steering effort (Reference):
6 N´m (60 kgf´cm, 53 in.´lbf) or less
HINT:
Take the tire type, pressure and contact surface into consider-
ation before making your diagnosis.
(e) Install the steering wheel assy set nut.
Torque: 50 N´m (510 kgf´cm, 37 ft´lbf)
(f) Install the horn button assy (See page 60-22).
(g) Inspect SRS warning light (See page 05-818).

51069-02
F41598
F41599
- POWER STEERINGVANE PUMP ASSY
51-9
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2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
OVERHAUL
NOTICE:

When using a vise, do not over tighten.

When installing, coat the parts indicated by the arrows with power steering fluid
(See page 51-7).
1. REMOVE FRONT WHEEL RH
2. DRAIN POWER STEERING FLUID
3. REMOVE FRONT FENDER LINER RH
4. REMOVE FRONT FENDER APRON SEAL RH
5. DISCONNECT OIL RESERVOIR TO PUMP HOSE NO.1
(a) Remove the clip and disconnect the oil reservoir to pump hose No.1.
NOTICE:
Take care not to spill fluid on the V belt.
6. REMOVE POWER STEERING OIL PRESSURE SWITCH
(a) Disconnect the connector.
(b) Remove the oil power steering pressure switch from the union bolt.
NOTICE:
Be careful not to drop the oil power steering pressure switch.
If the oil power steering pressure switch is dropped or strongly damaged, replace it with a new one.
7. DISCONNECT PRESSURE FEED HOSE
(a) Using a spanner (22 mm) to hold the pressure port union,
remove the union bolt and gasket.
8. REMOVE VANE PUMP V BELT
(a) Loosen the 2 bolts and remove the vane pump V belt.
9. REMOVE VANE PUMP ASSY
(a) Remove the 2 bolts and vane pump assy.

- POWER STEERINGVANE PUMP ASSY
51-17
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2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
51. CONNECT OIL RESERVOIR TO PUMP HOSE NO.1
(a) Connect the oil reservoir to pump hose No.1.
(b) Install the clip.
52. INSTALL FRONT FENDER APRON SEAL RH
53. INSTALL FRONT FENDER LINER RH
54. INSTALL FRONT WHEEL RH
Torque: 103 NVm (1,050 kgfVcm, 76 ftVlbf)
55. BLEED POWER STEERING FLUID (See page 51-3)
56. INSPECT FLUID LEAK

5106B-04
F40531
SST
C92274
- POWER STEERINGRACK & PINION POWER STEERING GEAR ASSY
51-21
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2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
OVERHAUL
NOTICE:
When installing , coat the parts indicated by the arrow with power steering fluid or molybdenum disul-
fide lithium base grease (See page 51-18).
1. PRECAUTION(See page 60-1)
2. DISCONNECT BATTERY NEGATIVE TERMINAL
3. REMOVE HORN BUTTON ASSY
(See page 60-22)
4. REMOVE STEERING WHEEL ASSY
(See page 50-8)
SST 09950-50013 (09951-05010, 09952-05010, 09953-05020, 09954-05021)
5. REMOVE FRONT WHEEL
6. REMOVE SPIRAL CABLE SUB-ASSY
(See page 50-8)
7. DISCONNECT TIE ROD ASSY LH
(a) Remove the cotter pin and nut.
(b) Using SST, remove the tie rod assy LH from the steering
knuckle.
SST 09628-6201 1
8. DISCONNECT TIE ROD ASSY RH
SST 09628-6201 1
HINT:
Remove the RH side by the same procedures with LH side.
9. DISCONNECT STEERING INTERMEDIATE SHAFT
SUB-ASSY
(a) Loosen the bolt and remove the clamp from the steering
column hole cover No.1.
(b) Disconnect the steering column hole cover No.2 from the
steering column hole cover No.1.
(c) Loosen the bolt.

ZX9390F41951
F40556
SST
51-36
- POWER STEERINGRACK & PINION POWER STEERING GEAR ASSY
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2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
50. INSPECT STEERING RACK END SUB-ASSY
(a) Ensure that the steering rack end sub-assy hole is not
clogged with grease.
HINT:
If the hole is clogged, the pressure inside the boot will change
after it is assembled and steering wheel is turned.
51. INSTALL STEERING RACK BOOT NO.2
(a) Install the steering rack boot No.2.
52. INSTALL STEERING RACK BOOT NO.1
HINT:
Remove the steering rack boot No.1 by the same procedures with steering rack boot No.2.
53. INSTALL STEERING RACK BOOT NO.2 CLAMP
(a) Using SST, tighten the steering rack boot No.2 clamp, as
shown in the illustration.
SST 09521-24010
Clearance: 3.0 mm (0.118 in.) or less
NOTICE:
Be careful not to damage the steering rack boot No.2.
54. INSTALL STEERING RACK BOOT NO.1 CLAMP
SST 09521-24010
NOTICE:
Be careful not to damage the steering rack boot No.1.
HINT:
Install the steering rack boot No.1 clamp by the same proce-
dures with steering rack boot No.2 clamp.
55. INSTALL STEERING RACK BOOT CLIP
(a) Using pliers, install the 2 steering rack boot clips.
56. INSTALL TIE ROD ASSY LH
(a) Screw the lock nut and tie rod assy LH onto the steering rack end sub-assy until the matchmarks are
aligned.
HINT:
After adjusting toe-in, torque the lock nut.
57. INSTALL TIE ROD ASSY RH
HINT:
Install the RH side by the same procedures with LH side.

51-40
- POWER STEERINGRACK & PINION POWER STEERING GEAR ASSY
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2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
68. CONNECT TIE ROD ASSY LH
(a) Connect the tie rod assy LH with the nut.
Torque: 49 NVm (500 kgfVcm, 36 ftVlbf)
(b) Install a new cotter pin.
NOTICE:
If the holes for a new cotter pin are not aligned, tighten the nut further up 60.
69. CONNECT TIE ROD ASSY RH
HINT:
Install the RH side by the same procedures with LH side.
70. INSTALL FRONT WHEEL
Torque: 103 NVm (1,050 kgfVcm, 76 ftVlbf)
71. BLEED POWER STEERING FLUID (See page 51-3)
72. CHECK POWERSTEERING FLUID LEAKAGE
73. INSTALL SPIRAL CABLE SUB-ASSY
(See page 50-8)
74. CENTER SPIRAL CABLE(See page 50-8)
75. INSTALL STEERING WHEEL ASSY
(See page 50-8)
76. INSTALL HORN BUTTON ASSY
(See page 60-22)
77. INSPECT AND ADJUST FRONT WHEEL ALIGNMENT(See page 26-5)
78. INSPECT STEERING WHEEL CENTER POINT
79. INSPECT SRS WARNING LIGHT(See page 05-826)

5002K-07
50-2
- STEERING COLUMNSTEERING
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2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
PROBLEM SYMPTOMS TABLE
Use the table below to help you find the cause of the problem. The numbers indicate the priority of the likely
cause of the problem. Check each part in the order shown. If necessary, repair or replace these parts.
SymptomSuspect AreaSee page
Hard steering
1. Tires (Improperly inflated)
2. Power steering fluid level (Low)
3. Drive belt (Loose)
4. Front wheel alignment (Incorrect)
5. Steering system joints (Worn)
6. Suspension arm ball joints (Worn)
7. Steering column (Binding)
8. Power steering vane pump
9. Power steering gear28-1
51-3
51-3
51-3
26-5
-
26-16
-
51-9
51-21
Poor return
1. Tires (Improperly inflated)
2. Front wheel alignment (Incorrect)
3. Steering column (Binding)
4. Power steering gear28-1
26-5
-
51-21
Excessive play
1. Steering system joints (Worn)
2. Suspension arm ball joints (Worn)
3. Intermediate shaft, Sliding yoke (Worn)
4. Front wheel bearing (Worn)
5. Power steering gear-
26-16
-
30-19
51-21
Abnormal noise
1. Power steering fluid level (Low)
2. Steering system joints (Worn)
3. Power steering vane pump
4. Power steering gear51-3
-
51-9
51-21

5002L-03
H41575
Maximum
Freeplay
30 mm (1.18 in.)
- STEERING COLUMNSTEERING
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2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
ON-VEHICLE INSPECTION
1. CHECK STEERING WHEEL FREEPLAY
(a) Stop the vehicle and face the tires straight ahead.
(b) Rock the steering wheel gently up and down with your
hand, check the steering wheel freeplay.
Maximum freeplay: 30 mm (1.18 in.)

5002V-03
F16015
Steering Wheel
Masking Tape
Steering Column
Upper Cover
F16016
Steering Wheel
Masking
Tape Steering Column
Upper Cover
Marked Line
F16017
Steering Wheel Steering Column
Upper Cover
Marked Line
50-4
- STEERING COLUMNSTEERING
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2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
REPAIR
1. STEERING OFF CENTER REPAIR PROCEDURE
(a) Inspect steering wheel off center.
(1) Apply masking tape on the top center of the steering
wheel and steering column upper cover.
(2) Drive the vehicle in a straight line for 100 meters at
a constant speed of 35 mph (56 km/h), and hold the
steering wheel to maintain the course.
(3) Draw a line on the masking tape as shown in the il-
lustration.
(4) Turn the steering wheel to its straight position.
HINT:
Refer to the upper surface of the steering wheel, steering spoke
and SRS airbag line for the straight position.
(5) Draw a new line on the masking tape or the steering
wheel as shown in the illustration.
(6) Measure the distance between the 2 lines on the
masking tape of the steering wheel.
(7) Convert the measured distance to steering angle.
Measured distance 1 mm (0.04 in.) = Steering angle
approximately 1 deg.
HINT:
Make a note of the steering angle.
(b) Adjust steering angle.