Page 1609 of 1807

R07108
SST
R07439
SST
Self-Locking
Nut
R07336
Vinyl Tape
R07099
Vinyl Tape SR-40
- STEERINGPOWER STEERING GEAR
1924 Author: Date:
1997 SUPRA (RM502U)
6. REMOVE RACK GUIDE SPRING CAP LOCK NUT
Using SST, remove the nut.
SST 09922-10010
NOTICE:
Use SST 09922-10010 in the direction shown in the illustra-
tion.
7. REMOVE RACK GUIDE SPRING CAP, RACK GUIDE
SPRING, RACK GUIDE AND RACK GUIDE SEAT
Using a hexagon wrench (24 mm), remove the cap.
8. REMOVE RACK HOUSING CAP
9. REMOVE SELF- LOCKING NUT, BEARING AND
SPACER
Using SST to stop the control valve shaft rotating, remove the
nut.
SST 09616-00010
10. REMOVE DUST COVER
11. REMOVE CONTROL VALVE HOUSING WITH CON-
TROL VALVE ASSEMBLY
(a) To prevent oil seal lip damage, wind vinyl tape on the ser-
rated part of the control valve shaft.
(b) Using a hexagon wrench (6 mm), remove the 2 bolts.
(c) Remove the O-ring from the housing.
12. REMOVE CONTROL VALVE ASSEMBLY
Using a plastic hammer, tap out the control valve.
NOTICE:
Be careful not to damage the oil seal lip.
13. REMOVE CYLINDER END STOPPER AND 2 SPACERS
Using snap ring pliers, remove the snap ring from the rack hous-
ing.
Page 1610 of 1807
R07362
Press
Socket Wrench
Extension Bar
W00208
Press
SST
Spacer
SST
Oil Seal
- STEERINGPOWER STEERING GEAR
SR-41
1925 Author: Date:
1997 SUPRA (RM502U)
14. REMOVE STEERING RACK AND OIL SEAL
(a) Using an extension bar or brass bar and a press, press
out the rack with the oil seal.
NOTICE:
Take care not to drop the rack.
(b) Remove the oil seal from the rack.
15. REMOVE OIL SEAL AND SPACER
Using SST, press out the oil seal and spacer.
SST 09950-60010 (09951-00280),
09950-70010 (09951-07200)
Page 1611 of 1807

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)
Page 1612 of 1807

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.
Page 1613 of 1807

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.
Page 1614 of 1807
- 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)
Page 1615 of 1807
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.
Page 1616 of 1807

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.