Lexus GS300/400 (2000 year). Manual — part 235

R06400

Brass Bar

W00123

W04397

F02586

SST

Fulcrum
Length

SR–56

–

STEERING

POWER STEERING GEAR

2226

(c)

Using a brass bar and hammer, stake the washer.

NOTICE:
Avoid any impact to the rack.

14.

INSTALL RH AND LH RACK BOOTS, CLAMPS AND
CLIPS

(a)

Ensure that the tube hole is not clogged with grease.

HINT:
If the tube hole is clogged, the pressure inside the boot will
change after it is assembled and the steering wheel is turned.

(b)

Install the boot.

NOTICE:
Be careful not to damage or twist the boot.
(c)

Using pliers tighten a new clamp, as shown in the illustra-
tion.

15.

INSTALL RH AND LH TIE ROD ENDS AND LOCK NUTS

(a)

Screw the lock nut and tie rod end onto the rack end until
the matchmarks are aligned.

(b)

After adjusting toe–in, torque the nut.
(See page

SA–4

)

Torque: 55 N·m (560 kgf·cm, 41 ft·lbf)

16.

INSTALL 2 TURN PRESSURE TUBES

(a)

Install a new union seat to the rack housing.

(b)

Using SST, install the tube.
SST

09633–00020

Torque: 20 N·m (203 kgf·cm, 15 ft·lbf)

HINT:

Use a torque wrench with a fulcrum length of 300 mm
(11.81 in.).

This torque value is effective in case that SST is parallel
to a torque wrench.

SR0E7–01

F02565

–

STEERING

POWER STEERING GEAR

SR–57

2227

INSTALLATION

1.

INSTALL GROMMET AND BRACKET

2.

INSTALL PS GEAR ASSEMBLY

(a)

Torque the 4 gear assembly set bolts.
Torque: 65 N·m (660 kgf·cm, 48 ft·lbf)

(b)

Connect the connector.

3.

2JZ–GE Engine:
CONNECT TUBE CLAMP

Torque the bolt.

Torque: 5 N·m (55 kgf·cm, 48 in.·lbf)

4.

1UZ–FE Engine:
CONNECT 2 TUBE CLAMPS

Torque the bolt.

Torque: 5 N·m (55 kgf·cm, 48 in.·lbf)

5.

CONNECT INTERMEDIATE SHAFT ASSEMBLY
(See page

SR–17

)

6.

CONNECT PRESSURE FEED AND RETURN TUBES

(a)

Pressure feed tube:
Torque the union bolt over a new gaskets.
Torque: 42 N·m (430 kgf·cm, 31 ft·lbf)

(b)

Return tube:
Torque the union bolt with a new gasket on each side of
the tube.
Torque: 42 N·m (430 kgf·cm, 31 ft·lbf)

7.

CONNECT RH AND LH TIE ROD ENDS
(See page

SA–9

)

8.

POSITION FRONT WHEELS FACING STRAIGHT
AHEAD

HINT:
Do it with the front of the vehicle jacked up.
9.

CENTER SPIRAL CABLE
(See page

SR–17

)

10.

INSTALL STEERING WHEEL

(a)

Align the matchmarks on the wheel and steering column
main shaft.

(b)

Temporarily tighten the wheel set nut.

(c)

Connect the connector.

11.

BLEED POWER STEERING SYSTEM
(See page

SR–3

)

12.

CHECK STEERING WHEEL CENTER POINT

13.

TORQUE STEERING WHEEL SET NUT
Torque: 35 N·m (360 kgf·cm, 26 ft·lbf)

14.

INSTALL STEERING WHEEL PAD
(See page

SR–17

)

15.

CHECK FRONT WHEEL ALIGNMENT
(See page

SA–4

)

SR0E8–01

F03696

1UZ–FE:
PPS Solenoid Valve

2JZ–GE:
PPS Solenoid
Valve

Tilt and Telescopic ECU

PPS ECU

SR–58

–

STEERING

PROGRESSIVE POWER STEERING (PPS)

2228

PROGRESSIVE POWER STEERING (PPS)

LOCATION

F04512

2JZ–GE:

1UZ–FE:

Vacuum Hose

Vacuum Hose

SR0DI–01

–

STEERING

AIR CONTROL VALVE

SR–7

2177

AIR CONTROL VALVE

INSPECTION

1.

TURN AIR CONDITIONING SWITCH OFF

2.

CHECK IDLE–UP

(a)

Start the engine and run it at idle.

(b)

Fully turn the steering wheel.

(c)

Check that the engine rpm decreases when the vacuum
hose of the air control valve is pinched.

(d)

Check that the engine rpm increases when the hose is re-
leased.