Lexus GS300/400 (2000 year). Service manual - part 233

F03650

Vinyl Tape

R06498

SST

F03651

Press

SST

F03666

Oil Seal

SST

SR–48

–

STEERING

POWER STEERING GEAR

2218

(b)

Wind vinyl tape to the control valve shaft.

(c)

Using a plastic hammer, tap out the valve assembly with
the nut from the control valve housing.

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

Remove the nut from the valve assembly.

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

Remove the O–ring from the nut.

12.

REMOVE CYLINDER END STOPPER AND SPACER

(a)

Using SST, remove the stopper.
SST

09631–20090

(b)

Remove the O–ring from the stopper.

13.

REMOVE STEERING RACK AND OIL SEAL

(a)

Using SST, press out the rack and oil seal.

NOTICE:
Take care not to drop the rack.

SST

09950–70010 (09951–07200)

(b)

Remove the oil seal from the rack.

14.

REMOVE OIL SEAL

Using SST, press out the oil seal.

SST

09950–60010 (09951–00280),
09950–70010 (09951–07360)

SR0E5–01

R10072

Dial Indicator

F03667

Press

SST

Oil

Seal

Bearing

SST

F03668

Press

Oil Seal

SST

SST

F03669

Press

Bearing

Oil Seal

SST

W01749

Press

SST

Oil Seal

–

STEERING

POWER STEERING GEAR

SR–49

2219

INSPECTION

1.

INSPECT STEERING RACK

(a)

Using a dial indicator, check the rack for runout and for
teeth wear and damage.
Maximum runout: 0.03 mm (0.0118 in.)

(b)

Check the back surface for wear and damage.

2.

IF NECESSARY, REPLACE OIL SEAL AND BEARING

(a)

Using SST, press out the oil seal and bearing from the
control valve housing.
SST

09950–60010 (09951–00260),
09950–70010 (09951–07150)

(b)

Coat a new oil seal lip with power steering fluid.

(c)

Using SST, press in the oil seal.
SST

09950–60010 (09951–00180, 09951–00330,
09952–06010), 09950–70010 (09951–07150)

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

(d)

Coat a new bearing with molybdenum disulfide lithium
base grease.

(e)

Using SST, press in the bearing.
SST

09950–60010 (09951–00330),
09950–70010 (09951–07150)

3.

IF NECESSARY, REPLACE OIL SEAL

(a)

Using SST, press out the oil seal from the bearing guide
nut.
SST

09950–60010 (09951–00320),
09950–70010 (09951–07100)

W01750

SST

Oil Seal

SST

Press

F03655

Needle Roller
Bearing

R09561

Bearing

R11302

R16011

Bushing

SR–50

–

STEERING

POWER STEERING GEAR

2220

(b)

Coat a new oil seal lip with power steering fluid.

(c)

Using SST, press in the oil seal.
SST

09950–60010 (09951–00280, 09951–00360,
09952–06010), 09950–70010 (09951–07100)

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

4.

INSPECT BEARING

(a)

Check the needle roller bearing of the rack housing for pit-
marks or damage.

If faulty, replace the rack housing.
(b)

Coat the inside of the bearing with molybdenum disulfide
lithium base grease.

5.

INSPECT BEARING

(a)

Check the bearing rotation condition and check for abnor-
mal noise.

If the bearing is worn or damaged, replace the control valve as-
sembly.
(b)

Coat the bearing with molybdenum disulfide lithium base
grease.

6.

INSPECT BUSHING

(a)

Check the inside of the bushing of the cylinder end stop-
per for cracks. If faulty, replace the bushing.

(b)

Apply molybdenum disulfide lithium base grease to the in-
side of the bushing.

7.

IF NECESSARY, REPLACE BUSHING

(a)

Using a screwdriver, remove the bushing from the cylin-
der end stopper.

NOTICE:
Be careful not to damage the cylinder end stopper.
(b)

Coat the inside of a new bushing with molybdenum disul-
fide lithium base grease.

(c)

Install the bushing.

R10955

R06172

N00401

R09564

Z06085

SST

–

STEERING

POWER STEERING GEAR

SR–51

2221

8.

IF NECESSARY, REPLACE TEFLON RING AND O–
RING

(a)

Using a screwdriver, remove the teflon ring and O–ring
from the steering rack.

NOTICE:
Be careful not to damage the groove for the ring.
(b)

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

(c)

Expand a new teflon ring with your fingers.

NOTICE:
Be careful not to overexpand the ring.

(d)

Coat the ring with power steering fluid.

(e)

Install the ring to the rack, and settle it down with your fin-
gers.

9.

IF NECESSARY, REPLACE TEFLON RINGS

(a)

Using a screwdriver, remove the 4 rings from the control
valve assembly.

NOTICE:
Be careful not to damage the grooves for the ring.
(b)

Expand 4 new rings with your fingers.

NOTICE:
Be careful not to overexpand the ring.
(c)

Coat the rings with power steering fluid.

(d)

Install the rings to the control valve assembly, and settle
them down with your fingers.

(e)

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

09631–20081

NOTICE:
Be careful not to damage the rings.