Page 4313 of 4770

SR06Q±01
R15196
Caliper Gauge
Micrometer
Vane Pump Shaft
Bushing
Front Housing
N00372
Thickness
Height
Length
R10282
Feeler Gauge
± STEERINGPOWER STEERING VANE PUMP
SR±23
2118 Author: Date:
INSPECTION
NOTICE:
When using a vise, do not overtighten it.
1. CHECK OIL CLEARANCE BETWEEN VANE PUMP
SHAFT AND BUSHING
Using a micrometer and caliper gauge, measure the oil clear-
ance.
5S±FE and 1MZ±FE Engines:
Standard clearance:
0.03 ± 0.05 mm (0.0012 ± 0.0020 in.)
Maximum clearance: 0.07 mm (0.0028 in.)
If it is more than the maximum, replace the front housing and
vane pump shaft.
2. INSPECT VANE PUMP ROTOR AND VANE PLATES
(a) Using a micrometer, measure the height, thickness and
length of the plates.
5S±FE and 1MZ±FE Engines:
Minimum height: 8.6 mm (0.339 in.)
Minimum thickness: 1.397 mm (0.0550 in.)
Minimum length: 14.991 mm (0.5902 In.)
(b) Using a feeler gauge, measure the clearance between
the rotor groove and plate.
5S±FE and 1MZ±FE Engines:
Maximum clearance: 0.035 mm (0.0014 in.)
If it is more than the maximum, replace the plate and/or rotor
with one having the same mark stamped on the cam ring.
Page 4314 of 4770

R13897
Inscribed Mark
R11288
R07591
Compressed Air
R11563Inscribed Mark SR±24
± STEERINGPOWER STEERING VANE PUMP
2119 Author: Date:
5S±FE and 1MZ±FE Engines:
Inscribed mark: 1, 2, 3, 4 or None
HINT:
There are 5 vane lengths with the following rotor and cam ring
marks:
5S±FE and 1MZ±FE Engines:
Rotor and cam
ring markVane plate part
numberVane plate length
mm (in.)
None44345±2601014.999±15.001
(0.59051±0.59059)
144345±2602014.997±14.999
(0.59043±0.59051)
244345±2603014.995±14.997
(0.59035±0.59043)
344345±2604014.993±14.995
(0.59027±0.59035)
444345±2605014.991±14.993
(0.59020±0.59027)
3. INSPECT FLOW CONTROL VALVE
(a) Coat the valve with power steering fluid and check that it
falls smoothly into the valve hole by its own weight.
(b) Check the valve for leakage. Close one of the holes and
apply 392±490 kPa (4±5 kgf/cm
2, 57±71 psi) of com-
pressed air into the opposite side, and confirm that air
does not come out from the end holes.
If necessary, replace the valve with one having the same letter
as inscribed on the front housing.
5S±FE and 1MZ±FE Engines:
Inscribed mark: A, B, C, D, E or F
Page 4315 of 4770
R08702
Calipers
R11290
Vinyl Tape
W03541
Press
SST
Oil Seal
± STEERINGPOWER STEERING VANE PUMP
SR±25
2120 Author: Date:
4. INSPECT SPRING
Using a calipers, measure the free length of the spring.
5S±FE and 1MZ±FE Engines:
Minimum free length: 32.3 mm (1.272 in.)
If it is not within the specification, replace the spring.
5. IF NECESSARY, REPLACE OIL SEAL
(a) Using a screwdriver with vinyl tape wound around its tip,
remove the oil seal.
NOTICE:
Be careful not to damage the front housing.
(b) Coat a new oil seal lip with power steering fluid.
(c) Using SST, press in the oil seal.
SST 09950±60010 (09951±00330),
09950±70010 (09951±07100)
NOTICE:
Make sure to install the oil seal facing the correct direction.
Page 4316 of 4770

SR06R±01
R13458
Inscribed Mark
R01149
Round End
R11292
SR±26
± STEERINGPOWER STEERING VANE PUMP
2121 Author: Date:
REASSEMBLY
NOTICE:
When using a vise, do not overtighten it.
1. COAT WITH POWER STEERING FLUID
(See page SR±18)
2. INSTALL VANE PUMP SHAFT
3. INSTALL STRAIGHT PINS
Using a plastic hammer, tap in 2 new pins.
NOTICE:
Be careful not to damage the pins.
4. INSTALL CAM RING
Align the holes of the ring and 2 straight pins, and install the ring
with the inscribed mark facing outward.
5. INSTALL VANE PUMP ROTOR
(a) Install the rotor with the inscribed mark facing outward.
(b) Install a new snap ring to the vane pump shaft.
6. INSTALL VANE PLATES
Install the 10 plates with the round end facing outward.
7. INSTALL GASKET
Install a new gasket.
8. INSTALL SIDE PLATE
Align the holes of the plate and 2 straight pins.
9. INSTALL WAVE WASHER
Install the washer so that its protrusions fit into the slots in the
side plate.
10. INSTALL REAR HOUSING
(a) Coat 2 new O±rings with power steering fluid and install
them to the housing.
(b) Torque the 4 bolts.
5S±FE and 1MZ±FE Engines:
Torque: 24 N´m (240 kgf´cm, 17 ft´lbf)
Page 4317 of 4770
W03339
Example 5S±FE Engine :
SST
± STEERINGPOWER STEERING VANE PUMP
SR±27
2122 Author: Date:
11. INSTALL SPRING, FLOW CONTROL VALVE AND
PRESSURE PORT UNION
(a) Install the valve facing the correct direction.
(See page SR±18)
(b) Coat a new O±ring with power steering fluid and install it
to the union.
(c) Torque the union.
5S±FE and 1MZ±FE Engines:
Torque: 83 N´m (850 kgf´cm, 62 ft´lbf)
12. INSTALL SUCTION PORT UNION
(a) Coat a new O±ring with power steering fluid and install it
to the union.
(b) Torque the bolt.
5S±FE and 1MZ±FE Engines:
Torque: 13 N´m (130 kgf´cm, 9 ft´lbf)
13. INSTALL FRONT AND REAR BRACKETS
Torque the 3 bolts and 2 nuts.
5S±FE and 1MZ±FE Engines:
Torque: 43 N´m (440 kgf´cm, 32 ft´lbf)
14. INSTALL VANE PUMP PULLEY
Using SST to stop the pulley rotating, torque the nut.
SST 09960±10010 (09962±01000, 09963±01000)
5S±FE and 1MZ±FE Engines:
Torque: 43 N´m (440 kgf´cm, 32 ft´lbf)
15. MEASURE PS VANE PUMP ROTATING TORQUE
(See page SR±22)
Page 4318 of 4770
SR06S±01
W03361
5S±FE Engine :
1MZ±FE Engine :Pressure Feed Tube
Stopper
Pressure
Feed
StopperTube
W03360
Example 5S±FE Engine :
A
B
W03542
5S±FE Engine :
SST
Fulcrum
Length SR±28
± STEERINGPOWER STEERING VANE PUMP
2123 Author: Date:
INSTALLATION
1. INSTALL PRESSURE FEED TUBE
(a) Torque the union bolt with a new gasket.
HINT:
Make sure the stopper of the tube is touching the front bracket,
as shown, then torque the union bolt.
5S±FE and 1MZ±FE Engines:
Torque: 52 N´m (525 kgf´cm, 38 ft´lbf)
(b) Install the oil pressure switch to the union bolt.
5S±FE and 1MZ±FE Engines:
Torque: 21 N´m (210 kgf´cm, 15 ft´lbf)
2. INSTALL PS VANE PUMP ASSEMBLY WITH PRESS-
ER FEED TUBE
Temporarily tighten the 2 (A and B) bolts.
3. INSTALL DRIVE BELT
(a) Adjust drive belt tension.
(See page SR±3)
(b) 5S±FE Engine:
Using SST, torque the A bolt.
SST 09249±63010
Torque: 29 N´m (293 kgf´cm, 21 ft´lbf)
HINT:
Use a torque wrench with a fulcrum length of 300 mm (11.81
in.).
Page 4319 of 4770

W03543
1MZ±FE Engine :
Engine Wire Clamp
Fulcrum
Length
SST
W04221
5S±FE Engine :
1MZ±FE Engine :Fulcrum
Length
SST Pressure
Feed Tube
Fulcrum
LengthSST
± STEERINGPOWER STEERING VANE PUMP
SR±29
2124 Author: Date:
(c) 1MZ±FE Engine:
Using SST, torque the A bolt.
SST 09249±63010
Torque: 29 N´m (293 kgf´cm, 21 ft´lbf)
HINT:
Use a torque wrench with a fulcrum length of 300 mm
(11.81 in.).
Disconnect the clamp with engine wire.
(d) Torque the B bolt.
5S±FE and 1MZ±FE Engines:
Torque: 43 N´m (440 kgf´cm, 32 ft´lbf)
(e) Connect the connector to the oil pressure switch.
NOTICE:
Be careful for oil on the connector.
4. CONNECT PRESSURE FEED TUBE
(a) Using SST, connect the tube.
SST 09631±22020
5S±FE Engine:
Torque: 32 N´m (326 kgf´cm, 24 ft´lbf)
1MZ±FE Engine:
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.
(b) 5S±FE Engine:
Install the clamp to the tube.
(c) 5S±FE Engine:
Install the 2 clamp plates and 2 holders to the tube.
(d) 5S±FE Engine:
Install the clamp plate set bolt.
(e) 5S±FE Engine:
Install the clamp plate set nut.
Torque: 10 N´m (100 kgf´cm, 7 ft´lbf)
(f) 1MZ±FE Engine:
Install the 2 clamp plates and 2 holders to the tube.
(g) 1MZ±FE Engine:
Tighten the bolt.
(h) 1MZ±FE Engine:
Install the 2 clamp plate set nuts.
Torque: 7.8 N´m (80 kgf´cm, 69 in.´lbf)
5. CONNECT RETURN HOSE
Page 4320 of 4770
SR±30
± STEERINGPOWER STEERING VANE PUMP
2125 Author: Date:
6. INSTALL FRONT FENDER APRON SEAL RH
Tighten the 2 bolts.
7. BLEED POWER STEERING SYSTEM
(See page SR±4)