Page 3265 of 4323
SR0RF±05
F06719
Vane Pump Shaft
Front HousingBushing
N00372
HeightThickness
Length
R10282
Feeler Gauge
SR±30
± STEERINGPOWER STEERING VANE PUMP
3257 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. CHECK OIL CLEARANCE BETWEEN VANE PUMP
SHAFT AND BUSHING
Using a micrometer and caliper gauge, measure the oil clear-
ance.
Standard clearance:
0.03 to 0.05 mm (0.0012 to 0.0020 in.)
Maximum clearance: 0.07 mm (0.0028 in.)
If it is more than the maximum, replace the shaft and front hous-
ing.
2. INSPECT VANE PUMP ROTOR AND VANE PLATES
(a) Using a micrometer, measure the height, thickness and
length of the 10 plates.
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.
Maximum clearance: 0.033 mm (0.0013 in.)
Page 3266 of 4323

R13897Inscribed Mark
W04759
F04865
Compressed Air
F04866Inscribed Mark
± STEERINGPOWER STEERING VANE PUMP
SR±31
3258 Author: Date:
2005 SEQUOIA (RM1146U)
If it is more than the maximum, replace the plate and/or rotor
with the one having the same mark stamped on the cam ring.
Inscribed mark: 1, 2, 3, 4 or None
HINT:
There are 5 vane plate lengths with the following rotor and cam
ring marks:
Rotor and cam
ring markVane plate part
numberVane plate length
mm (in.)
None44345±0401014.999±15.001
(0.59051±0.59059)
144345±0402014.997±14.999
(0.59043±0.59051)
244345±0403014.995±14.997
(0.59035±0.59043)
344345±0404014.993±14.995
(0.59027±0.59035)
444345±0405014.991±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 under its own weight.
(b) Check the flow control valve for leakage.
Close one of the holes and apply compressed air 392 to
490 kPa (4 to 5 kgf/cm
2, 57 to 71 psi) into the opposite
side, and confirm that air does not come out from the end
holes.
If necessary, replace the valve with the one having the same let-
ter inscribed on the front housing.
Inscribed mark: A, B, C, D, E or F
Page 3267 of 4323
R08702
Vernier Calipers
SR±32
± STEERINGPOWER STEERING VANE PUMP
3259 Author: Date:
2005 SEQUOIA (RM1146U)
4. INSPECT SPRING
Using vernier calipers, measure the free length of the spring.
Minimum free length: 33.2 mm (1.307 in.)
If it is not within the specification, replace the spring.
Page 3268 of 4323
SR0RG±09
F01511
Vinyl Tape
F06727
Press
SST
Oil Seal
SST
± STEERINGPOWER STEERING VANE PUMP
SR±33
3260 Author: Date:
2005 SEQUOIA (RM1146U)
REPLACEMENT
NOTICE:
When using a vise, do not overtighten it.
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 in the correct direction.
Page 3269 of 4323

SR0V8±04
F04809
Inscribed Mark
F04810
Round End
F01507
SR±34
± STEERINGPOWER STEERING VANE PUMP
3261 Author: Date:
2005 SEQUOIA (RM1146U)
REASSEMBLY
NOTICE:
When using a vise, do not overtighten it.
1. COAT PARTS INDICATED BY ARROWS WITH POWER
STEERING FLUID (See page SR±26)
2. INSTALL VANE PUMP SHAFT WITH VANE PUMP
PULLEY
3. INSTALL STRAIGHT PINS
Using a plastic hammer, tap in 2 new pins into the front housing.
NOTICE:
Be careful not to damage the pins.
4. INSTALL CAM RING
Install the cam ring with the inscribed mark facing outward.
HINT:
Align the hole of the cam ring with the one of the straight pins.
5. INSTALL VANE PUMP ROTOR
(a) Install the vane pump rotor with the inscribed mark facing
outward.
(b) Install a new snap ring to the vane pump shaft.
6. INSTALL VANE PLATES AND GASKET
(a) Install the 10 plates with the round end facing outward.
(b) Install a new gasket on the front housing.
NOTICE:
Be careful of the direction of the gasket.
7. INSTALL SIDE PLATE
Align the hole of the plate with the hole of the 2 straight pins.
8. INSTALL WAVE WASHER
Install the washer so that the protrusions fit into the slots in the
side plate.
9. INSTALL REAR HOUSING
(a) Coat 2 new O±rings with power steering fluid and install
them to the rear housing.
(b) Install the rear housing with the 4 bolts.
Torque: 24 N´m (240 kgf´cm, 17 ft´lbf)
Page 3270 of 4323
± STEERINGPOWER STEERING VANE PUMP
SR±35
3262 Author: Date:
2005 SEQUOIA (RM1146U)
10. INSTALL SPRING, FLOW CONTROL VALVE AND
PRESSURE PORT UNION
(a) Install the spring on the front housing.
(b) Install the flow control valve in the correct direction
(See page SR±26).
(c) Coat a new O±ring with power steering fluid and install it
on the pressure port union.
(d) Install the pressure port union.
Torque: 83 N´m (850 kgf´cm, 61 ft´lbf)
11. INSTALL SUCTION PORT UNION
(a) Coat a new O±ring with power steering fluid and install it
on the suction port union.
(b) Install the suction port union with the bolt.
Torque: 13 N´m (130 kgf´cm, 9 ft´lbf)
12. MEASURE PS VANE PUMP ROTATING TORQUE
(See page SR±29)
Page 3271 of 4323

SR0MI±14
F06724Stopper
EM6656
SR±36
± STEERINGPOWER STEERING VANE PUMP
3263 Author: Date:
2005 SEQUOIA (RM1146U)
INSTALLATION
1. INSTALL PS VANE PUMP ASSEMBLY
(a) Install the PS vane pump assembly with the stud bolt.
Torque: 22 N´m (220 kgf´cm, 16 ft´lbf)
(b) Install the 2 bolt and nut.
Torque: 44 N´m (450 kgf´cm, 33 ft´lbf)
2. INSTALL PRESSURE FEED TUBE
(a) Connect the pressure feed tube.
(b) Install a new gasket and the union bolt on the pressure
feed tube.
HINT:
Make sure that the stopper of the pressure feed tube contacts
the PS vane pump body as shown in the illustration, then tight-
en the union bolt.
Torque: 46.5 N´m (475 kgf´cm, 34 ft´lbf)
3. CONNECT RETURN HOSE
Connect the return hose with the clip.
4. CONNECT 2 VACUUM HOSES
Connect the 2 vacuum hoses and install the 2 clips.
5. INSTALL DRIVE BELT
Loosen the drive belt tension by turning the drive belt tensioner
counterclockwise, and install the belt.
6. INSTALL AIR CLEANER ASSEMBLY WITH AIR
CLEANER HOSE
(a) Install the air cleaner assembly with air cleaner hose and
the 3 bolts.
(b) Install the clamp.
(c) Connect the hoses.
(d) Connect the MAF meter connector.
7. BLEED POWER STEERING SYSTEM
(See page SR±4)
Page 3272 of 4323
SR02N±08
F17905
Bracket
Grommet
PS Gear Assembly Pressure Feed Tube
: Specified torque
Non±reusable part
* For use with SST
N´m (kgf´cm, ft´lbf)
29 (290, 21)
Clamp Plate
Return Tube
25 (250, 18)
*22 (227, 16)25 (250, 18)
*22 (227, 16)
Cotter Pin
91 (930, 67)
165 (1,700, 123)35 (360, 26)
No. 2 Intermediate
Shaft Assembly
91 (930, 67)
165 (1,700, 123)
20 (200, 15)
130 (1,350, 96)
± STEERINGPOWER STEERING GEAR
SR±37
3264 Author: Date:
2005 SEQUOIA (RM1146U)
POWER STEERING GEAR
COMPONENTS