TOYOTA SUPRA 1997 Service Repair Manual

SR14C-01
R10072
R07288
A
B
C
BearingSST
R07109
Cutouts
SST
Oil Seal
W00209
Press
SST
Oil Seal
SST
W00210
SST
Bearing SR-42
- STEERINGPOWER STEERING GEAR
1926 Author
: Date
:
1997 SUPRA (RM502U)
INSPECTION
NOTICE:
When using a vise, do not overtighten it.
1. INSPECT STEERING RACK
(a) Using a dial indicator, check the rack for runout and for
teeth wear or damage.
Maximum runout: 0.30mm (0.018 in.)
(b) Check the back surface for wear or damage.
2. IF NECESSARY, REPLACE OIL SEAL AND BEARING
(a) Set SST to the rack housing, as shown.
SST 09612-30012
(b) Turn A clockwise and engage the tips of C on the bearing.
(c) Using a spanner (8 mm), keep A fixed while turning nut B
clockwise, and remove the bearing.
NOTICE:
Be careful not to damage the rack housing.
(d) Using SST, remove the oil seal from the rack housing.
SST 09612-30012
NOTICE:
Be careful not to damage the rack housing.
HINT:
When using SST, apply the tips of SST to the cutouts in the rack
housing.
(e) Coat a new oil seal lip with power steering fluid.
(f) Using SST, press in the oil seal.
SST 09950-60010 (09951-00280, 09951-00390,
09952-06010), 09950-70010 (09951-07100)
NOTICE:
Make sure to install the oil seal facing the correct direction.
(g) Using SST, press in the bearing.
SST 09950-60010 (09951-00460),
09950-70010 (09951-07100)

W00211
SSTOil Seal
Bearing
W00212
SST
Oil SealOil Seal
W00213
SST
Bearing
R10955
R06172
- STEERINGPOWER STEERING GEAR
SR-43
1927 Author
: Date
:
1997 SUPRA (RM502U)
3. IF NECESSARY, REPLACE OIL SEAL AND BEARING
(a) Using SST, press out the oil seal with the bearing from the
control valve housing.
SST 09950-60010 (09951-00240),
09950-70010 (09951-07100)
(b) Coat a new oil seal lip with power steering fluid.
(c) Using SST, press in the oil seal.
SST 09950-60010 (09951-00320),
09950-70010 (09951-07200)
NOTICE:
Make sure to install the oil seal facing the correct direction.
(d) Using SST, press in the bearing.
SST 09950-60010 (09951-00340),
09950-70010 (09951-07200)
4. IF NECESSARY, REPLACE TEFLON RING AND O-
RING
(a) Using a screwdriver, remove the teflon ring and O-ring
from the steering rack.
NOTICE:
Be careful not to damage the groove of the ring.
(b) Coat a new O-ring with power steering fluid and install it.
(c) Expand a new teflon ring with your fingers.
NOTICE:
Be careful not to overexpand the ring.

Z06082
R11205
Screwdriver
Z06085
R11268
Screwdriver SR-44
- STEERINGPOWER STEERING GEAR
1928 Author
: Date
:
1997 SUPRA (RM502U)
(d) Coat the ring with power steering fluid.
(e) Install the ring to the rack, and snug it down with your fin-
gers.
5. IF NECESSARY, REPLACE TEFLON RINGS
(a) Using a screwdriver, remove the 4 rings from the control
valve assembly.
NOTICE:
Be careful not to damage the grooves for the ring.
(b) Expand 4 new rings with your fingers.
NOTICE:
Be careful not to overexpand the ring.
(c) Coat the rings with power steering fluid.
(d) Install the rings to the control valve assembly, and snug
them down with your fingers.
(e) Carefully slide the tapered end of SST over the rings to
seal them.
SST 09631-20081
NOTICE:
Be careful not to damage the rings.
6. IF NECESSARY, REPLACE TEFLON RINGS AND O-
RINGS
(a) Using a screwdriver, remove the 2 teflon rings and O-
rings from the control valve assembly.
NOTICE:
Be careful not to damage the grooves for the teflon ring.
(b) Coat 2 new O-rings with power steering fluid, and install
them.

- STEERINGPOWER STEERING GEAR
SR-45
1929 Author
: Date
:
1997 SUPRA (RM502U)
(c) Expand 2 new teflon rings with your fingers.
NOTICE:
Be careful not to overexpand the teflon rings.
(d) Coat the rings with power steering fluid.
(e) Install the rings to the valve assembly, and snug them
down with your fingers.
(f) Carefully slide the tapered end of SST over the teflon
rings to seal them.
SST 09631-32020
NOTICE:
Be careful not to damage the teflon rings.
7. IF NECESSARY, REPLACE PRESSURE CONTROL
VALVE ASSEMBLY
(a) Using a hexagon wrench (6 mm), remove the 3 bolts and
connector bracket.
(b) Remove the 3 O-rings from the control valve housing.
(c) Coat 3 new O-rings with power steering fluid, and install
them.
(d) Using a hexagon wrench (6 mm), install a new pressure
control valve and connector bracket with the 3 bolts.
Torque: 18 N´m (185 kgf´cm, 13 ft´lbf)

SR14D-01
W00214
Press SSTOil Seal
Spacer
SST
W02101
Rack Teeth End
SST SR-46
- STEERINGPOWER STEERING GEAR
1930 Author
: Date
:
1997 SUPRA (RM502U)
REASSEMBLY
NOTICE:
When using a vise, do not overtighten it.
1. COAT WITH POWER STEERING FLUID OR MOLYBDE-
NUM DISULFIDE LITHIUM BASE GREASE (See page
SR-35)
2. INSTALL SPACER AND OIL SEAL
(a) Coat a new oil seal lip with power steering fluid.
(b) Using SST, press in the oil seal.
SST 09950- 60010 (09951- 00240, 09951- 00400,
09952-06010),
09950-70010 (09951-07360)
NOTICE:

Make sure to install the oil seal facing the correct
direction.

Take care that the oil seal does not get reversed as
you install it.
3. INSTALL STEERING RACK
(a) Install SST to the rack.
SST 09631-20102
HINT:
If necessary, scrape the burrs off the rack teeth end and bur-
nish.
(b) Coat SST with power steering fluid.
(c) Install the rack into the rack housing.
NOTICE:
Be careful not to damage the oil seal lip.
(d) Remove the SST.

SR4406
Vinyl Tape
W00215
SST
SR4392SST
W00216
Vinyl Tape
- STEERINGPOWER STEERING GEAR
SR-47
1931 Author
: Date
:
1997 SUPRA (RM502U)
4. INSTALL OIL SEAL AND 2 SPACERS
(a) To prevent oil seal lip damage, wind vinyl tape on the
steering rack, and apply power steering fluid.
(b) Coat a new oil seal lip with power steering fluid.
(c) Install the oil seal by pushing it into the rack housing with-
out tilting.
NOTICE:

Make sure to install the oil seal facing the correct
direction.

Be careful not to damage the oil seal lip.
(d) Install the 2 spacers into the rack housing.
5. INSTALL CYLINDER END STOPPER
(a) Using SST and a hammer, drive in the stopper.
SST 09950- 60010 (09951- 00270, 09951- 00340,
09952-06010),
9950-70010 (09951-07200)
(b) Using snap ring pliers, install the snap ring to the rack
housing.
6. AIR TIGHTNESS TEST
(a) Install SST to the rack housing.
SST 09631-12071
NOTICE:
Do not install union seats.
(b) Apply 53.3 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) Install the valve assembly into the valve housing.
NOTICE:
Be careful not to damage the teflon rings and oil seal.

R07106
SST
W0262612° SR-48
- STEERINGPOWER STEERING GEAR
1932 Author
: Date
:
1997 SUPRA (RM502U)
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 housing.
(b) Using a hexagon wrench (6 mm), torque the 2 bolts.
Torque: 18 N´m (185 kgf´cm, 13 ft´lbf)
9. INSTALL BEARING, SPACER AND SELF-LOCKING
NUT
Using SST to stop the control valve shaft rotating, torque a new
nut.
SST 09616-00010
Torque: 39 N´m (400 kgf´cm, 29 ft´lbf)
10. INSTALL RACK HOUSING 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) Torque the cap.
Torque: 69 N´m (700 kgf´cm, 50 ft´lbf)
11. INSTALL RACK GUIDE SEAT, 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.
12. 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) Using a hexagon wrench (24 mm), torque the rack guide
spring cap.
Torque: 25 N´m (250 kgf´cm, 18 ft´lbf)
(c) Using a hexagon wrench (24 mm), return the cap 12°.
(d) Using SST, turn the control valve shaft right and left 1 or
2 times.
SST 09616-00010
(e) Using a hexagon wrench (24 mm), loosen the cap until the
rack guide spring is not functioning.

W02627
SST
Hexagon
Wrench
W02628
Hexagon Wrench
SST
Fulcrum Length
R07337
Groove
- STEERINGPOWER STEERING GEAR
SR-49
1933 Author
: Date
:
1997 SUPRA (RM502U)
(f) Using SST, a torque wrench and hexagon wrench (24
mm), tighten the cap until the preload is within the specifi-
cation.
SST 09616-00010
Preload (turning):
1.0 - 1.9 N´m (10 - 20 kgf´cm, 8.7 - 17.4 in.´lbf)
13. 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) Using a hexagon wrench (24 mm) to hold the rack guide
spring cap, and using SST, torque the nut.
SST 09922-10010
Torque: 50 N´m (513 kgf´cm, 37 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):
1.0 - 1.9 N´m (10 - 20 kgf´cm, 8.7 - 17.4 in.´lbf)
(d) Remove the RH and LH rack ends.
14. INSTALL DUST COVER
15. INSTALL RH AND LH CLAW WASHERS AND RACK
ENDS
(a) Install a new claw washer, and temporarily install the rack
end.
HINT:
Align the claws of the washer with the steering rack grooves.

F04167
SST Fulcrum
Length
R06400
SR4664
R07474
Clip
Clamp SR-50
- STEERINGPOWER STEERING GEAR
1934 Author
: Date
:
1997 SUPRA (RM502U)
(b) Using a spanner (22 mm) to hold the steering rack steady,
and using SST, torque the rack end.
SST 09922-10010
Torque: 77 N´m (782 kgf´cm, 57 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 380 mm (14.96
in.).
(c) Using a brass bar and a hammer, stake the washer.
NOTICE:
Avoid any impact to the rack.
16. INSTALL RH AND LH RACK BOOTS, CLAMPS AND
CLIPS
(a) Make sure that the steering rack hole is not clogged with
grease.
HINT:
If the hole is clogged, the pressure inside the boot will change
after it is assembled and the steering wheel turned.
(b) Install the boot.
NOTICE:
Be careful not to damage or twist the boot.
(c) Install the clamp and clip to the boot.
HINT:
When the rack guide spring cap is toward you, install the clip
and clamp in the positions shown in the illustration.
17. 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-2).
Torque: 56 N´m (570 kgf´cm, 41 ft´lbf)

R07105SSTFulcrum Length
- STEERINGPOWER STEERING GEAR
SR-51
1935 Author
: Date
:
1997 SUPRA (RM502U)
18. INSTALL 2 TURN PRESSURE TUBES
(a) Install the union seat.
(b) Using SST, install the tube.
SST 09633-00020
Torque: 24 N´m (243 kgf´cm, 18 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.
(c) Torque the union bolt over 2 new gaskets.
Torque: 34 N´m (350 kgf´cm, 25 ft´lbf)