Lexus SC300 / Lexus SC400. Manual - part 748

GEAR HOUSING
(SC400)
GEAR HOUSING REMOVAL AND
INSTALLATION

SR0GG–03

Remove and install the parts, as shown.

MAIN POINTS OF REMOVAL AND
INSTALLATION

NOTICE: When disconnecting the intermediate shaft
during removal of the gear housing, remove the steering
wheel and perform centering of the spiral cable.
(See page 

SR–11

)

If the operation is performed without removing the steer-
ing wheel, use the procedure below to make sure the
steering wheel is firmly fixed in position and cannot turn.

SR–142

–

STEERING

POWER STEERING

1. DISCONNECT 

INTERMEDIATE 

SHAFT

(a)  Position the front wheels facing straight ahead.
(b)  Using the seat belt of the driver’s seat, fix the steering wheel

so that it does not turn.

(c)  Place matchmarks on the intermediate shaft and control

valve shaft.

(d)  Loosen the bolt on the upper side of the intermediate shaft,

remove the bolt on the lower side and disconnect the
intermediate shaft.

2. 

DISCONNECT TIE ROD ENDS

(a)  Remove the cotter pin and nut.
(b)  Using SST, disconnect the tie rod end from the knuckle arm.

SST 09628–62011

3. CONNECT 

INTERMEDIATE 

SHAFT

(a)  Set the gear housing so that it matches the dimensions

shown below, with the gear housing at the center point.

–

STEERING

POWER STEERING

SR–143

(b) Align 

matchmarks on the intermediate shaft and control valve

shaft and connect them.

Torque: 35 N

⋅

m (360 kgf

⋅

cm, 36 ft

⋅

lbf)

4. 

CONNECT PRESSURE AND RETURN TUBES
After inserting the rotation stopper in the valve housing holes,
tighten the union bolts.

Torque: 49 N

⋅

m (500 kgf

⋅

cm, 36 ft

⋅

lbf)

5. 

CENTER SPIRAL CABLE
If the steering wheel has been removed, or the steering
wheel may have moved during the operation, always perform
centering of the spiral cable.
(See page SR–11)

6. 

CHECK STEERING WHEEL CENTER POINT

7. 

BLEED POWER STEERING SYSTEM
(See page 

SR–115

)

8. CHECK 

TOE–IN

(See page 

SA–5

)

SR–144

–

STEERING

POWER STEERING

 (SC300)
GEAR HOUSING REMOVAL AND
INSTALLATION

SR0GH–03

Remove and install the parts, as shown.

MAIN POINTS OF REMOVAL AND
INSTALLATION

NOTICE: When disconnecting the intermediate shaft during

removal of the gear housing, remove the steering wheel and

perform centering of the spring cable.

(See page 

SR–11

)

If the operation is performed without removing the steer-
ing wheel, use the procedure below to make sure the
steering wheel is firmly fixed in position and cannot turn.

1. DISCONNECT 

INTERMEDIATE 

SHAFT

(a)  Position the front wheels facing straight ahead.
(b)  Using the seat belt of the driver’s seat, fix the steering wheel

so that it does not turn.

–

STEERING

POWER STEERING

SR–145