steering LEXUS SC400 1991 Service Repair Manual

9. SELECT 2 PAWL STOPPERS
(a) With the tilt pawl and ratchet engaged, install the 2 pawlstoppers.
(b) Check that the alignment marks on the stopper and pawl
align when the stopper is lightly rotated to the pawl side.
(c) If the alignment marks do not align, select pawl stoppers according to the following table.
 

Tilt lever side
 

Tilt sub lever side
 

Dimension ªAº
mm (in.)
 

1
 

A
 

12.68 ± 12.74
(0.4992 ± 0.5016)
 

2
 

B
 

12.61±12.67
(0.4965 ± 0.4988)
 

3
 

C
 

12.54 ± 12.60
(0.4937 ± 0.4961)
 

4
 

D
 

12.47 ± 12.53
(0.4909± 0.4933)
 

5
 

E
 

12.40 ± 12.46
(0.4882 ± 0.4906)
 

6
 

F
 

12.33 ± 12.39
(0.4854 ± 0.4878)
 

7
 

G
 

12.26 ± 12.32
(0.4827 ± 0.4850)
(d) After selecting the stoppers, check that on both sides the
pawl and ratchet are fully engaged.
10. I N S TA L L 2 PAW L S TO PPERS AND 2 TILT LEVER
RETAINERS
(a) Install the tilt sub lever side pawl stopper and retainer.
(b) Install the spacer and new E±ring.
(c) Install the nut to the tilt steering bolt.
Torque: 15 N Vm (150 kgf Vcm, 11 ft Vlbf)
(d) Install the collar to the tilt memory bolt.
(e) Install the nut to the tilt memory bolt.
Torque: 5.9 N Vm (60 kgf Vcm, 52 in. Vlbf)
(f) Install the tilt lever side pawl stopper and tilt lever retainer.
(g) Install the E±ring.
(h) Install and torque the nut.
Torque: 15 N Vm (150 kgf Vcm, 11 ft Vlbf)
SR±22±
STEERING STEERING COLUMN
WhereEverybodyKnowsYourName

11. INSTALL BOLT
(a) Tighten the nut with the matchmarks on the pawl and collarare aligned.
Torque: 5.9 N Vm (60 kgf Vcm, 52 in. Vlbf)
(b) Check that the pawls rotate smoothly.
12. INSTALL 3 TENSION SPRINGS
13. INSTALL COMPRESSION SPRING
(a) Install the 2 bushings to the spring.
(b) Install the spring and bolt.
(c) Using a torx wrench, tighten the bolt.
Torx wrench: T30 (Part No. 09042±00010 or locally manufac-
tured tool)
Torque: 7.8 N Vm (80 kgf Vcm, 69 in. Vlbf)
14. INSTALL 2 LOCK WEDGES TO BREAKAWAY BRACKET
NOTICE: Make sure that no grease gets on the contact
surface between the lock wedge and the lower column
tube.
15. INSTALL BREAKAWAY BRACKET
(a) Install the steering shaft thrust stopper.
(b) Install the breakaway bracket to the main shaft. Be careful that the spline part of the main shaft does not sep-
arate.
±
STEERING STEERING COLUMNSR±23
WhereEverybodyKnowsYourName

(c) Using snap ring pliers, install the snap ring to the main shaft.
(d) Install the steering column tube stopper bolt.
Torque: 19 NVm (195 kgf Vcm, 14 ft Vlbf)
16. INSTALL TELESCOPIC LEVER LOCK BOLT
(a) Pull the steering column tube away from the breakaway
bracket and facing the body installation surface of the
breakaway bracket upward, temporarily install the lock bolt.
(b) Install a double nut on the lock bolt. Torque to 16 N Vm (160 kgf Vcm, 12 ft Vlbf), loosen once, then
torque again to 7.4 N Vm (75 kgf Vcm, 65 in. Vlbf).
17. INSTALL TELESCOPIC LEVER
(a) Install the compression spring and ball.
(b) Install the washer, lever, collar and bolt.
Torque: 25 N Vm (260 kgf Vcm, 19 ft Vlbf)
18. I N S TA L L T E L E S C O P I C L EVER SERRATION
ATTACHMENT
(a) Rotate the telescopic lever until it touches the breakaway
bracket.
(b) Install the serration attachment so that the alignment marks on the telescopic lever and the serration attachment align.
Torque: 13 N Vm (130 kgf Vcm, 9 ft Vlbf)
SR±24±
STEERING STEERING COLUMN
WhereEverybodyKnowsYourName

19. INSTALL CONNECTOR BRACKET
Torque: 4.9 NVm (50 kgf Vcm, 43 in. Vlbf)
20. INSTALL PROTECTOR
21. 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.
22. INSTALL UPPER BRACKET
(a) Install the upper bracket with 2 new tapered±head bolts.
(b) Tighten the 2 tapered±head bolts until the bolt heads break off.
23. INSTALL LOWER DUST COVER
(a) Using a press, install the dust seal.
±
STEERING STEERING COLUMNSR±25
WhereEverybodyKnowsYourName

(b) Install the lower dust cover and clip.
24. INSTALL SLIDING YOKEAlign matchmarks and install the sliding yoke to the main
shaft.
Torque: 35 N Vm (360 kgf Vcm, 26 ft Vlbf)
25. INSTALL IGNITION KEY CYLINDER ILLUMINATION
26. CHECK TILT OPERATION
(a) Check that there is not axial play at the end of the main shaft.
(b) With the main shaft in the neutral position, push the tilt lever and check that the main shaft rises to the uppermost position.
(c) Lower the main shaft, and check that it locks in the uppermost position.
27. CHECK TELESCOPIC OPERATION
(a) Check that t here is no axial play when the lever is turned fully
counterclockwise.
(b) Check that the main shaft moves smoothly when the lever is turned clockwise.
SR±26
±
STEERING STEERING COLUMN
WhereEverybodyKnowsYourName

POWER TILT AND POWER TELESCOPIC
STEERING COLUMN
COMPONENTS
SR0EJ±03
±
STEERING STEERING COLUMNSR±27
WhereEverybodyKnowsYourName

SECTIONAL VIEW
SR0EK±02
SR±28±
STEERING STEERING COLUMN
WhereEverybodyKnowsYourName

STEERING COLUMN DISASSEMBLY
SR0EL±04
NOTICE: When placing the breakaway bracket in a vise during
disassembly or assembly of the steering column, use alumi-
num, etc. to prevent scratches to the tip of the capsule.
1. REMOVE IGNITION KEY CYLINDER ILLUMINATION
2. REMOVE SLIDING YOKE Place matchmarks on the sliding yoke and main shaft.
3. REMOVE LOWER DUST COVER
(a) Remove the clip and dust cover.
(b) Using a screwdriver, remove the dust seal.
4. REMOVE TELESCOPIC POSITION SENSOR PLATE
5. REMOVE TILT AND TELESCOPIC POSITION SENSORS
±
STEERING STEERING COLUMNSR±29
WhereEverybodyKnowsYourName

6. REMOVE TURN SIGNAL BRACKET
7. REMOVE NO. 1 PROTECTOR AND NO. 2 PROTECTOR
8. REMOVE CONNECTOR BRACKET
9. REMOVE UPPER BRACKET
(a) U s i n g a c e n t e r i n g p u n c h , m a r k t h e c e n t e r o f t h e 2tapered±head bolts.
(b) U s i n g a 4 ± 5 m m ( 0 . 16±0.20 in.) drill, drill into the 2
tapered±head bolts.
(c) Using a screw extractor, remove the 2 tapered±head bolts.
(d) Remove the bracket and column upper camp.
SR±30
±
STEERING STEERING COLUMN
WhereEverybodyKnowsYourName

10. REMOVE TILT STEERING GEAR ASSEMBLY WITHMOTOR
(a) Remove the 2 nuts, spacers, springs, bushings and bond cable.
(b) Set SST and plate washer (36 mm outer diameter), as shown, and then remove the 2 No. 2 tilt steering shafts.
SST 09213±54015 (09214±00030)
09910±00015 (09911±00011, 09912±00010)
(Reference) Plate washer 0 90201±10201
(c) Remove the tilt steering gear assembly.
(d) Remove the 2 bushings and support stopper bolts.
11. REMOVE COLUMN UPPER TUBE WITH MAIN SHAFT
(a) Set SST and plate washer (36 mm outer diameter), as shown, and then remove the 2 tilt steering shafts.
SST 09213±54015 (09214±00030)
09910±00015 (09911±00011, 09912±00010)
(Reference) Plate washer 0 90201±10201
(b) Using snap ring pliers, remove the snap ring from the main shaft.
±
STEERING STEERING COLUMNSR±31
WhereEverybodyKnowsYourName