Lexus RX300 (MCU15). Service manual — part 518

SR065–09

F12881

LHD:

RHD:

SST

SR–34

–

STEERING

POWER STEERING GEAR

LEXUS RX300 (RM785E)

REMOVAL

NOTICE:
Remove the steering wheel assembly before the steering
gear removal, because there is possibility of breaking of
the spiral cable.
1.

PLACE FRONT WHEELS FACING STRAIGHT AHEAD

2.

REMOVE STEERING WHEEL PAD (See page SR–12)

3.

REMOVE STEERING WHEEL (See page SR–12)

4.

DISCONNECT RH AND LH TIE ROD ENDS (See page
SA–10)

5.

DISCONNECT INTERMEDIATE SHAFT SUB–AS-
SEMBLY (See page SR–12)

6.

DISCONNECT 2 CLAMP PLATES

Remove the bolt, nut and 2 clamp plates.

7.

DISCONNECT PRESSURE FEED AND RETURN
TUBES

Using SST, disconnect the pressure feed and return tubes.

SST

09023–38400

8.

REMOVE PS GEAR ASSEMBLY

(a)

Remove the 2 PS gear assembly set bolts and nuts.

(b)

Remove the PS gear assembly from the LH of the vehicle.

NOTICE:
Do not damage the turn pressure tubes.

SR066–07

F12875

SST

F05621

SST

R00429

Matchmarks

F05622

F05623

Claw washer

–

STEERING

POWER STEERING GEAR

SR–35

LEXUS RX300 (RM785E)

DISASSEMBLY

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

REMOVE 2 TURN PRESSURE TUBES

(a)

Using SST, remove the 2 turn pressure tubes.
SST

09023–38200

(b)

Remove the 4 O–rings from the 2 turn pressure tubes.

2.

SECURE PS GEAR ASSEMBLY IN VISE

Using SST, secure the PS gear assembly in a vise.

SST

09612–00012

3.

REMOVE RH AND LH TIE ROD ENDS AND LOCK
NUTS

(a)

Place matchmarks on the tie rod end and rack end.

(b)

Loosen the lock nut, and remove the tie rod end and lock
nut.

(c)

Employ the same manner described above to the other
side.

4.

REMOVE RH AND LH CLIPS, RACK BOOTS AND
CLAMPS

(a)

Using a screwdriver, loosen the clamp.

(b)

Remove the clamp, clip and rack boot.

NOTICE:
Be careful not to damage the boot.
HINT:
Mark the RH and LH boots.
(c)

Employ the same manner described above to the other
side.

5.

REMOVE RH AND LH RACK ENDS AND CLAW WASH-
ERS

(a)

Using a screwdriver and a hammer, unstake the claw
washer.

NOTICE:
Avoid any impact to the steering rack.

F05624

SST

F05625

SST

Rack Guide
Spring Cap Lock Nut

R11647

Rack Guide
Spring Cap

SST

R11648

SST

SR–36

–

STEERING

POWER STEERING GEAR

LEXUS RX300 (RM785E)

(b)

Using a spanner (24 mm), hold the steering rack steadily
and using SST, remove the rack end.
SST

09922–10010

NOTICE:
Use SST 09922–10010 in the direction shown in the illustra-
tion.
HINT:
Mark the RH and LH rack ends.
(c)

Remove the claw washer.

(d)

Employ the same manner described above to the other
side.

6.

REMOVE RACK GUIDE SPRING CAP LOCK NUT

Using SST, remove the rack guide spring cap lock nut.

SST

09922–10010

NOTICE:
Use SST 09922–10010 in the direction shown in the illustra-
tion.

7.

REMOVE RACK GUIDE SPRING CAP, RACK GUIDE
SPRING, RACK GUIDE SUB–ASSEMBLY

(a)

Using SST, remove the rack guide spring cap.
SST

09631–10021

(b)

Remove the rack guide spring and rack guide sub–as-
sembly.

8.

REMOVE RACK HOUSING CAP

9.

REMOVE SELF–LOCKING NUT

Using SST, stop the control valve shaft rotating and remove the
self–locking nut.

SST

09616–00011

10.

REMOVE DUST COVER

R11553

Matchmarks

R11554

Vinyl Tape

Shop Rag

Press

R11649

Matchmarks

R11650

–

STEERING

POWER STEERING GEAR

SR–37

LEXUS RX300 (RM785E)

11.

REMOVE CONTROL VALVE HOUSING WITH CON-
TROL VALVE ASSEMBLY

(a)

Place matchmarks on the control valve housing and rack
housing.

(b)

Remove the 2 bolts and pull out control valve housing with
control valve assembly.

(c)

Remove the gasket from the rack housing.

12.

REMOVE CONTROL VALVE ASSEMBLY

(a)

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

(b)

Press out the control valve assembly with the oil seal.

NOTICE:

S

Place a shop rag between the valve housing and the
blocks.

S

Be careful not to drop the valve assembly.

S

Be careful not to damage the oil seal lip.

13.

REMOVE OIL SEAL

Remove the oil seal from the control valve assembly.

14.

REMOVE RACK HOUSING NO. 2 BRACKET AND
GROMMET

(a)

Place matchmarks on the rack housing No. 2 bracket and
rack housing.

(b)

Using a screwdriver, pry the clamp of the rack housing No.
2 bracket and remove the rack housing No. 2 bracket.

(c)

Remove the rack housing No. 2 grommet from the rack
housing No. 2 bracket.