2000 LEXUS GS400 torque

SR0E2±01
F03672
 ClipGrommetBracket
65 (660, 48)
87 (890, 64)
5 (55, 48 in.´lbf)
42 (430, 31)
Intermediate Shaft
Assembly
PS Gear Assembly Return Tube
Pressure Feed Tube Tube Clamp
Union Bolt
N´m (kgf´cm, ft´lbf) : Specified torque
 Non±reusable part2JZ±GE:
42 (430, 31)
Union Bolt
5 (55, 48 in.´lbf)
Tube Clamp
Return
Tube  Gasket
 Gasket
Pressure Feed Tube
 Clip
87 (890, 64)
65 (660, 48)
35 (360, 26)
SR±42
± STEERINGPOWER STEERING GEAR
2212 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
POWER STEERING GEAR
COMPONENTS

F03664
Tie Rod End
Lock Nut
Rack Boot
 Claw Washer
Steering Rack
 Claw Washer Rack HousingClip
 Clamp
 O±Ring
Bushing
 Oil Seal Spacer
Cylinder End
Stopper
O±Ring
 Teflon Ring
 Oil Seal
Rack End
 Clamp
Rack Boot
Clip
Lock Nut
Tie Rod End
N´m (kgf´cm, ft´lbf) : Specified torque
Non±reusable part
Molybdenum disulfide lithium base grease
Power Steering fluid
*For use with SST
55 (560, 41)
55 (560, 41)
103 (1,050, 76)
*76 (770, 56)
103 (1,050, 76)
*76 (770, 56)
59 (600, 43)
Rack End
± STEERINGPOWER STEERING GEAR
SR±43
2213 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)

F03665
N´m (kgf´cm, ft´lbf) : Specified torque
Non±reusable part
Molybdenum disulfide lithium base grease
Power Steering fluid
*For use with SST

Precoated partRack Housing

Rack Guide Spring
Cap Lock Nut Rack Guide
Sub±AssemblyRack Guide
Spring
Rack Guide
Spring Cap Teflon Ring Control Valve AssemblyBearing O±Ring
 Oil Seal Dust Cover
Control Valve
Housing
Turn Pressure Tube
 Union Seat
Bearing Guide Nut
25 (250, 18)
* 20 (203, 15)
18 (185, 13)
18 (185, 13)
25 (250, 18)
* 20 (203, 15)
25 (250, 18)
69 (700, 51)
* 51 (521, 38)
 O±Ring Oil Seal
SR±44
± STEERINGPOWER STEERING GEAR
2214 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)

F03656
SST
W00112
Cylinder End Stopper
Wooden
Block
W00113
Cylinder End Stopper
SST
F03657
SST
F03658
Vinyl Tape
± STEERINGPOWER STEERING GEAR
SR±53
2223 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
5. INSTALL SPACER AND CYLINDER END STOPPER
(a) Using SST and a hammer, drive in the spacer.
SST 09950±60010 (09951±00280, 09951±00420,
09952±06010), 09950±70010 (09951±07200)
(b) Coat a new O±ring with power steering fluid, and install
it to the stopper.
(c) Using a wooden block and hammer, drive in the stopper
until it is tightly installed.
NOTICE:
Be careful not to damage the O±ring.
(d) Using SST, torque the stopper.
SST 09631±20120
Torque: 59 N´m (600 kgf´cm, 43 ft´lbf)
6. AIR TIGHTNESS TEST
(a) Install SST to the unions of the rack housing.
SST 09631±12071
(b) Apply 53 kPa (400 mmHg, 15.75 in.Hg) of vacuum for
about 30 seconds.
(c) Check that there is no change in the vacuum.
If there is change in the vacuum, check the installation of the oil
seals.
7. INSTALL CONTROL VALVE ASSEMBLY
(a) Coat the teflon rings with power steering fluid.
(b) To prevent oil seal lip damage, wind vinyl tape on the ser-
rated part of the control valve shaft.
(c) Push the valve assembly into the control valve housing.
NOTICE:
Be careful not to damage the teflon rings and oil seal lip.

F03653
SST
F03654
F03659
17°
F03660
SST
SR±54
± STEERINGPOWER STEERING GEAR
2224 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(d) Coat a new O±ring with power steering fluid, and install
it to the bearing guide nut.
(e) Using SST, torque the nut.
SST 09631±20060
Torque: 25 N´m (250 kgf´cm, 18 ft´lbf)
NOTICE:
Be careful not to damage the oil seal lip.
(f) Using a punch, stake the nut.
8. INSTALL CONTROL VALVE HOUSING WITH CON-
TROL VALVE ASSEMBLY
(a) Coat a new O±ring with power steering fluid, and install
it to the valve housing.
(b) Align the matchmarks on the valve housing and rack
housing, and install the valve housing with the valve as-
sembly to the rack housing.
(c) Torque the 2 bolts.
Torque: 18 N´m (185 kgf´cm, 13 ft´lbf)
9. INSTALL DUST COVER
10. INSTALL RACK GUIDE SUB±ASSEMBLY, RACK
GUIDE SPRING AND RACK GUIDE SPRING CAP
(a) Apply sealant to 2 or 3 threads of the cap.
Sealant:
Part No. 08833±00080, THREE BOND 1344,
LOCTITE 242 or equivalent
(b) Temporarily install the cap.
11. ADJUST TOTAL PRELOAD
(a) To prevent the steering rack teeth from damaging the oil
seal lip, temporarily install the RH and LH rack ends.
(b) Torque the rack guide spring cap.
Torque: 25 N´m (250 kgf´cm, 18 ft´lbf)
(c) Return the cap 17°.
(d) Using SST, turn the control valve shaft right and left 1 or
2 times.
SST 09616±00010
(e) Loosen the cap until the rack guide spring is not function-
ing.

F03661
SST
F03662
SST
Fulcrum
Length
R07337
Rack Groove
F03663Fulcrum Length SST
± STEERINGPOWER STEERING GEAR
SR±55
2225 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(f) Using SST and a torque wrench, tighten the cap until the
preload is within specification.
SST 09616±00010
Preload (turning):
0.5 ±1.7 N´m (4.7±17.2 kgf´cm, 4.1±14.9 in.´lbf)
12. INSTALL RACK GUIDE SPRING CAP LOCK NUT
(a) Apply sealant to 2 or 3 threads of the nut.
Sealant:
Part No.08833±00080, THREE BOND 1344,
LOCTITE 242 or equivalent
(b) Holding the rack guide spring cap rotating, and using
SST, torque the nut.
SST 09922±10010
Torque: 51 N´m (521 kgf´cm, 38 ft´lbf)
NOTICE:
Use SST 09922±10010 in the direction shown in the illustra-
tion.
HINT:
Use a torque wrench with a fulcrum length of 345 mm (13.58
in.).
(c) Recheck the total preload.
Preload (turning):
0.5 ±1.7 N´m (4.7±17.2 kgf´cm, 4.1±14.9 in.´lbf)
(d) Remove the RH and LH rack ends.
13. INSTALL RH AND LH CLAW WASHERS AND RACK
ENDS
(a) Install a new washer, and temporarily tighten the rack
end.
HINT:
Align the claws of the washer with the steering rack grooves.
(b) Using a spanner to hold the steering rack steady, and us-
ing SST, torque the rack end.
SST 09922±10010
Torque: 76 N´m (770 kgf´cm, 56 ft´lbf)
NOTICE:
Use SST 09922±10010 in the direction shown in the illustra-
tion.
HINT:
Use a torque wrench with a fulcrum length of 345 mm (13.58
in.).

R06400
Brass Bar
W00123
W04397
F02586
SSTFulcrum
Length
SR±56
± STEERINGPOWER STEERING GEAR
2226 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(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
± STEERINGPOWER STEERING GEAR
SR±57
2227 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
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)