Lexus ES300 (1997 year). Service manual - part 558

R11573

SST

Teflon Ring

SR–40

–

STEERING

POWER STEERING GEAR

1336

1997 LEXUS ES300   (RM511U)

(e)

Carefully slide the tapered end of SST over the rings until
the rings fit to the steering rack.
SST

09631–20081

NOTICE:
Be careful not to damage the rings.

SR068–05

W03561

SST

Press

SST

Oil Seal

W02101

Rack Teeth End

SST

R11574

Vinyl Tape

–

STEERING

POWER STEERING GEAR

SR–41

1337

1997 LEXUS ES300   (RM511U)

REASSEMBLY

NOTICE:
When using a vise, do not overtighten it.
1.

COAT WITH POWER STEERING FLUID OR MOLYBDE-
NUM DISULFIDE LITHIUM BASE GREASE
(See pages 

SR–29

)

2.

INSTALL OIL SEAL

(a)

Coat a new oil seal lip with power steering fluid.

(b)

Using SST, press in the oil seal.
SST

09950–60010 (09951–00240, 09951–00430,
09952–06010), 09950–70010 (09951–07360)

NOTICE:

Make sure to install the oil seal facing the correct
direction.

Take care that the oil seal does not get reversed as
you install it.

3.

INSTALL STEERING RACK

(a)

Install SST to the rack.
SST

09631–33010

HINT:
If necessary, scrape the burrs off the rack teeth end and bur-
nish.
(b)

Coat the SST with power steering fluid.

(c)

Install the rack into the rack housing.

NOTICE:
Be careful not to damage the oil seal lip.
(d)

Remove SST.

4.

INSTALL BUSHING

(a)

Coat a new O–ring with power steering fluid and install it
to the bushing.

(b)

To prevent oil seal lip damage, wind vinyl tape on the
steering rack end, and apply power steering fluid.

(c)

Install the bushing.

NOTICE:

Make sure to install the bushing facing the correct
direction.

Be careful not to damage the oil seal lip.

R11656

SST

Wire

Stopper

Cylinder End

R00662

SST

R11657

R11658

R11575

Vinyl Tape

SR–42

–

STEERING

POWER STEERING GEAR

1338

1997 LEXUS ES300   (RM511U)

5.

INSTALL CYLINDER END STOPPER

(a)

Align the installation hole for the wire of the stopper with
the slot of the rack housing.

(b)

Install a new wire into the stopper.

(c)

Using SST, turn the stopper clockwise 450 

±

 50

°

.

SST

09631–10021

6.

AIR TIGHTNESS TEST

(a)

Install SST to the rack housing.
SST

09631–12071

(b)

Apply 53 kPa (400 mmHg, 15.75 in.Hg) of vacuum for
about 30 seconds.

(c)

Check that there is no change in the vacuum.

If there is change in the vacuum, check the installation of the oil
seals.

7.

INSTALL RACK HOUSING NO.2 BRACKET AND
GROMMET

(a)

Install the grommet to the bracket.

HINT:
Align the projection of the grommet with the hole of the bracket.
(b)

Align the matchmarks on the bracket and rack housing.

(c)

Place the bracket in a vise and tighten the vise to fasten
the clamp.

8.

INSTALL CONTROL VALVE ASSEMBLY

(a)

To prevent oil seal lip damage, wind vinyl tape on the ser-
rated part of the valve shaft.

(b)

Coat the teflon rings with power steering fluid.

(c)

Install the valve assembly into the valve housing.

NOTICE:
Be careful not to damage the teflon rings and oil seal.

W03562

Press

SST

Oil Seal

R11648

SST

R11659

Punch

–

STEERING

POWER STEERING GEAR

SR–43

1339

1997 LEXUS ES300   (RM511U)

9.

INSTALL OIL SEAL

(a)

Coat a new oil seal lip with power steering fluid.

(b)

Using SST, press in the oil seal.
SST

09612–22011

NOTICE:
Make sure to install the oil seal facing the correct direction.
10.

INSTALL CONTROL VALVE HOUSING WITH CON-
TROL VALVE ASSEMBLY

(a)

Place a new gasket on the rack housing.

(b)

Align the matchmarks on the valve housing and rack
housing.

(c)

Torque the 2 bolts.
Torque: 18 N·m (185 kgf·cm, 13 ft·lbf)

11.

INSTALL SELF–LOCKING NUT

Using SST to stop the control valve shaft rotating, torque a new
nut.

SST

09616–00010

Torque: 25 N·m (250 kgf·cm, 18 ft·lbf)

12.

INSTALL DUST COVER

13.

INSTALL RACK HOUSING CAP

(a)

Apply sealant to 2 or 3 threads of the cap.
Sealant:
Part No.08833–00080, THREE BOND 1344,
LOCTITE 242 or equivalent

(b)

Torque the cap.
Torque: 59 N·m (600 kgf·cm, 43 ft·lbf)

(c)

Using a punch and hammer, stake the 2  parts of the cap.

14.

INSTALL RACK GUIDE SEAT, RACK GUIDE, RACK
GUIDE SPRING AND RACK GUIDE SPRING CAP

(a)

Install the seat to the guide.

(b)

Apply sealant to 2 or 3 threads of the cap.
Sealant:
Part No.08833–00080, THREE BOND 1344,
LOCTITE 242 or equivalent

(c)

Temporarily install the cap.