Lexus SC300 / Lexus SC400. Service manual — part 764

2.

IF NECESSARY, REPLACE KEY CYLINDER

(a) Place the ignition key at the ACC position.
(b) Push down the stop pin with a thin rod, and pull out the key

cylinder.

(d) Install a new key cylinder.

HINT: Make sure the ignition key is at the ACC position.

3.

INSPECT UPPER BEARING
Check the upper bearing rotation condition and check for ab-
normal noise.
If the bearing is worn or damaged, replace the column upper
tube.

4. IF

NECESSARY,

ADJUST

TELESCOPIC

ADJUSTING

SCREWS

(a) Using SST, remove the lock nuts.

SST 09617–14010

(b) Using SST, tighten the adjusting screws.

SST 09923–00010

Torque: 6.9 N

⋅

m (70 kgf

⋅

cm, 64 in.

⋅

lbf)

NOTICE:

•

If the adjusting screw is tightened higher than the

specified torque, the telescopic mechanism may

malfunction. Conversely, if the torque applied is too low,

rattling may develop in the column, so the specified

torque should always be applied.

•

When the adjusting screw and conical springs have been

removed, replace the conical springs facing in the

direction shown in the illustration.

–

STEERING

STEERING COLUMN

SR–33

(c) Using SST, install the lock nuts.

SST 09617–14010, 09923–00010

Torque: 31 N

⋅

m (320 kgf

⋅

cm, 23 ft

⋅

lbf)

HINT: Use a torque wrench with a fulcrum length of 340 mm
(13.39 in.).

STEERING COLUMN ASSEMBLY

SR0EN–03

1. APPLY MOLYBDENUM DISULPHIDE LITHIUM BASE

GREASE
(See page

SR–27

)

2.

INSTALL MAIN SHAFT

(a) Install the bearing, thrust collar and spring to the main shaft.
(b) Install the main shaft into the upper tube.

(c) Using SST to compress the compression spring.

SST 09950–20017 (09956–00010)

(d) Using snap ring pliers, install a new snap ring.

3.

INSTALL TILT STEERING HOUSING SUPPORT

Torque: 13 N

⋅

m (130 kgf

⋅

cm, 9 ft

⋅

lbf)

4.

INSTALL COLUMN UPPER TUBE WITH MAIN SHAFT

(a) Install the upper tube and main shaft into the lower tube.

SR–34

–

STEERING

STEERING COLUMN

(b) Using snap ring pliers, install the snap ring to the main shaft.

(c) Using a vise, press in the 2 tilt steering shafts.

HINT: Make sure the upper tube turns smoothly.

5. INSTALL

TILT

STEERING

GEAR

ASSEMBLY

WITH

MOTOR

(a) Install the 2 bushings and support stopper bolts.

(b) Using a vise, press in the 2 No. 2 tilt steering shafts.

(c) Install the bushing, spring and spacer to each stopper bolt.
(d) Install the bond cable.
(e) Install and torque 2 new lock nuts.

Torque: 2.9 N

⋅

m (30 kgf

⋅

cm, 26 in.

⋅

lbf)

–

STEERING

STEERING COLUMN

SR–35

6.

INSTALL UPPER BRACKET

(a) Install the upper bracket with 2 new tapered–head bolts.
(b) Tighten the tapered–head bolts until the bolt heads break off.

7. INSTALL

CONNECTOR

BRACKET

Torque: 4.9 N

⋅

m (50 kgf

⋅

cm, 43 in.

⋅

lbf)

8.

INSTALL NO. 1 PROTECTOR AND NO. 2 PROTECTOR

9.

INSTALL TURN SIGNAL BRACKET
Install the turn signal bracket so that its upper surface is par-
allel with upper surface of the capsule of the breakaway
bracket.

10. INSTALL TILT AND TELESCOPIC POSITION SENSORS

SR–36

–

STEERING

STEERING COLUMN