2005 LEXUS ES300 change wheel

ZX9390F41951
F40556
SST
51-36
- POWER STEERINGRACK & PINION POWER STEERING GEAR ASSY
2611 Author
: Date
:
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.

Lexus Supports ASE CertificationPage 1 of 2
Title:
STEERING INTERMEDIATE SHAFT NOISE
Models:
'03 ES 300, '04 ± '05 ES 330
Technical Service
Information Bulletin
April 29, 2005
ST001-05
Some customers may hear and feel a clunk, pop, or knock type noise when turning the
steering wheel left or right. A new intermediate shaft has been developed to address
this concern.
Intermediate Shaft
Steering Column
2003 model year ES 300 vehicles.
2004 model year ES 330 vehicles.
2005 model year ES 330 vehicles produced BEFORE the Production Change
Effective VINs shown below.
MODELPRODUCTION CHANGE EFFECTIVE VIN
ES 330JTHBA30G#55098506
OP CODEDESCRIPTIONTIMEOFPT1T2
ST4008R & R Steering Intermediate Shaft0.945220±332009119
Applicable Warranty*:
This repair is covered under the Lexus Comprehensive Warranty. This warranty is in
effect for 48 months or 50,000 miles, whichever occurs first, from the vehicle's
in-service date.
* Warranty application is limited to correction of a problem based upon a customer's specific complaint.
STEERING
Introduction
Applicable
Vehicles
Production
Change
Information
Warranty
Information

REPAIR MANUAL SUPPLEMENT: VEHICLE PULLING TO ONE SIDE ± ST004-01 RevisedDecember 21, 2001
Page 4 of 11
2. Relationship Between Tire Characteristics and Vehicle Pulling to One Side
When radial tires are rotating, they have the characteristic of generating force in the
lateral direction between the tire and the road surface. This lateral force is comprised
of two factors:
Ply±steer, which changes direction according to the rotation direction of the tires.
Conicity, which is generated in a fixed direction regardless of the tire rotation
direction.
If these lateral forces are too strong, vehicle pulling will occur.
A. Ply±Steer
Lateral force due to ply-steer is produced by the construction of the belts inside
the tire tread. With radial tires, the wire of the belt is slanted as shown in the
illustration below. Thus, it is in the lateral direction that tire tread easily changes
shape (stretches), and lateral force is generated between the tire and the road
surface in the lateral direction.
Easily±Stretched
Direction
Wire
BeltRotation Direction
Ply±Steer
(Direction of Force Generation Varies
According to Tire Rotation)
NOTE:
Lateral force from ply-steer prevents vehicle drift caused by road slant, so in many
cases lateral force to the right is provided for left-handed steering vehicles.
B. Conicity
Conicity is lateral force resulting from uneven formation of the left and right sides
of the tire. The direction the lateral force is exerted depends on the hardness of
the side walls and the difference in height between the left/right sides of the tire.
Conicity
(Direction Is Fixed Regardless of
Direction of Tire Rotation) Hard
Part
NOTE:
In the case of vehicle pulling caused by tires, the lateral force which is exerted as a
result of conicity has the greatest effect. On a flat road, if the steering wheel is held
without exerting steering effort for 100 m (109 yards) when travelling at 100 km/h (62
mph), the vehicle may drift as much as 1.5 m (5 ft).
When vehicle pulling is due to conicity, the amount of drift can be reduced and the
direction of drift can be changed by changing the location of the tire or reversing
the tire when installing it on the wheel. Wheel
Alignment &
Tire
Characteristics
(Continued)

REPAIR MANUAL SUPPLEMENT: VEHICLE PULLING TO ONE SIDE ± ST004-01 RevisedDecember 21, 2001
Page 6 of 11
1. IMPORTANT NOTICE
Before repairing vehicle pulling to one side, it is necessary to clearly identify the
cause of the pulling condition. Frequently, the cause of the vehicle pulling to one side
is diagnosed as wheel alignment. However, the actual cause may be lateral force
generated by the tires. Performing wheel alignment when tire force is the cause could
result in the wheel alignment being set at a value outside of specifications. This would
then cause other problems such as uneven tire wear, etc.
2. Troubleshooting
First determine whether vehicle pulling to one side is caused by a wheel alignment
problem or tire characteristics, then decide which repairs to make.
A. Perform the following checks and correct as necessary.
a. Check tires for size, wear and for proper inflation pressure.
b. Check whether the vehicle is noticeably tilted backward/forward or left/right.
NOTE:
Tilting of the vehicle produces a left±right difference in the camber and caster and can
cause vehicle pulling to one side.
c. Check brakes for dragging.
B. Confirm problem symptoms.
With the customer accompanying you, drive the vehicle to confirm if the
customer 's complaint involves vehicle pulling to one side or steering wheel off
center. If the problem is steering wheel off center, adjust the front tie rods on the
vehicle. Refer to Lexus TSIB ST002±01. Also check the direction of vehicle
pulling and the extent of the pulling.
C. Decide if vehicle pulling is due to wheel alignment or tires.
a. Switch the left and right front tires (If the tires are non±unidirectional).
b. Conduct a drive test to check whether the direction that the vehicle pulls has
changed.
SYMPTOMPROBABLE CAUSECORRECTIVE ACTION
No change in vehicle
pulling conditionFront wheel alignmentProceed to Repair Procedure 3. Vehicle pulling
caused by Wheel Alignment (Page 6)
Vehicle pulling
eliminatedTire conicityRepair complete. Vehicle Pulling Caused by Tire
Conicity (Page 3 and 6)
Vehicle pulling
direction is reversedTire conicityProceed to Repair Procedure 4. Vehicle Pulling
Caused by Tire Conicity (Page 7)
Repair
Procedures

REPAIR MANUAL SUPPLEMENT: VEHICLE PULLING TO ONE SIDE ± ST004-01 RevisedDecember 21, 2001
Page 7 of 11
Helpful hints to determine cause of vehicle pulling:
The direction of lateral force from tire conicity becomes reversed when the left and
right tires are switched. Therefore, if the pulling direction changes when the tires are
switched, it can be concluded that vehicle pulling is caused by tire conicity.
ORIGINAL TIRE POSITIONS TIRES SWITCHED
The Vehicle is Pulled to the Right by
the Lateral Force Exerted to the Right.The Direction of the Tires Which Exerted Lateral
Force to the Right has Been Changed, so the Tires
Now Exert Lateral Force to the Left and the Vehicle
Now Pulls to the Left. Vehicle Pulling
Direction (Right)Vehicle Pulling
Direction (Left)
Lateral Force by
ConicityLateral Force by
Conicity
If the pulling direction does not change after the front tires are switched, the cause of
vehicle pulling is not tire conicity. In this case, the likely cause is a front wheel
alignment condition.
3. Vehicle Pulling Caused by Wheel Alignment
When it is determined by troubleshooting that the vehicle pulling to one side is
caused by wheel alignment, perform repairs according to the following procedure.
Vehicle Pulling to One Side
Check Front Wheel Alignment
Not Within SpecificationWithin Specification
Adjust Front Wheel Alignment
Vehicle Still Pulls
Road Test
Within Specification But
Vehicle Pulls
OK
Adjust Cross Camber to Eliminate Vehicle Pulling
NOTE: Do not exceed 1
of cross camber.
Repair
Procedures
(Continued)

REPAIR MANUAL SUPPLEMENT: VEHICLE PULLING TO ONE SIDE ± ST004-01 RevisedDecember 21, 2001
Page 8 of 11
WHEN VEHICLE PULLS TO LEFTWHEN VEHICLE PULLS TO RIGHT
Increase right front camber and decrease left
front camber until vehicle pulling is eliminatedIncrease left front camber and decrease right
front camber until vehicle pulling is eliminated
NOTE:
Keep the cross camber within 1
or less.
Keep the camber of each wheel within specifications (+/±45' of center value).
If adjustment exceeds the specifications, uneven tire wear will result.
4. Vehicle Pulling Caused by Tire Conicity
When it is determined by troubleshooting that the vehicle pulling to one side is
caused by tire conicity, perform repairs according to the following procedures.
Indication of Tire Conicity as a Cause:
When the front tires are switched, the pulling direction changes. Proceed to STEP 1.
STEP 1:
Remove the front left tire from the wheel and reverse the tire. Then perform a road
test and check for change in the pulling direction.
HINT:
By performing this operation, it can be checked whether the left or right tire exerts a
stronger lateral force. Either tire can be reversed. Shown here is an example of the left
tire reversed.
ORIGINAL TIRE POSITIONS
Vehicle Pulling
Direction
Lateral Force by
Conicity (Larger)
Lateral Force by
Conicity (Smaller) Lateral Force by
Conicity (Smaller)Lateral Force by
Conicity (Larger)
Vehicle Pulling Direction
(Same Direction)
Reversed
If Vehicle Pulls in the Same Direction: Go to STEP 2.
The lateral force generated by the right front tire is greater than the left tire, so
the vehicle is pulling due to the lateral force of the right tire.
LEFT TIRE REVERSE INSTALLATION
Repair
Procedures
(Continued)

REPAIR MANUAL SUPPLEMENT: VEHICLE PULLING TO ONE SIDE ± ST004-01 RevisedDecember 21, 2001
Page 11 of 11
G. Install the front wheels.
Torque: 103 Nm (1,050 kgfcm, 76 ftlbf)
H. Check the camber.
NOTE:
Adjusting value for the set bolts
is
6' ± 30' (0.1
± 0.5
).
When making an adjustment of more
than 45', replace the upper and lower
steering knuckle set bolts with the
adjusting bolts
. If the camber is not
within the specification, use the table
shown to estimate how much
additional camber adjustment will be
required, and select the appropriate
camber adjusting bolt.
I. Follow steps 5±a through 5±h
again. Between steps 5±b and
5±c, exchange one or two
selected bolts.
HINT:
When exchanging the two bolts,
exchange one bolt each time.
If Vehicle Pull Is Eliminated: Repair Is Now Complete.
If Vehicle Is Still Pulling: Contact Your Regional Office For Further Assistance.
Repair
Procedures
(Continued)