TOYOTA SEQUOIA 2001 Service Repair Manual

SR0MD±08
F06723
Air Cleaner Assembly
with Air Cleaner HoseMAF Meter Connector
Clamp
Return Hose
N´m (kgf´cm, ft´lbf) : Specified torque

Non±reusable part

Gasket
46.5 (475, 34)Clip
Vacuum Hose
Clip
Drive Belt
PS Vane Pump
Assembly44 (450, 33)
Pressure Feed Tube
22 (220, 16)
SR±26
± STEERINGPOWER STEERING VANE PUMP
3253 Author: Date:
2005 SEQUOIA (RM1146U)
POWER STEERING VANE PUMP
COMPONENTS

F06720
Pressure Port Union
83 (850, 61)

O±Ring
Flow Control Valve
Spring

O±Ring
Suction Port Union
13 (130, 9)
Vane Pump Shaft
with Vane Pump Pulley

Oil Seal
Front Housing

Gasket
24 (240, 17)
Rear Housing

O±Ring
Wave Washer
Side Plate
Cam Ring

Straight Pin
Vane Pump
Rotor



Snap Ring x10Vane Plate
N´m (kgf´cm, ft´lbf): Specified torque

Non±reusable part
Power steering fluid
± STEERINGPOWER STEERING VANE PUMP
SR±27
3254 Author: Date:
2005 SEQUOIA (RM1146U)

SR0ME±08
EM6656
SR±28
± STEERINGPOWER STEERING VANE PUMP
3255 Author: Date:
2005 SEQUOIA (RM1146U)
REMOVAL
1. REMOVE AIR CLEANER ASSEMBLY WITH AIR
CLEANER HOSE
(a) Disconnect the MAF meter connector.
(b) Disconnect the hoses.
(c) Remove the clamp.
(d) Remove the 3 bolts and air cleaner assembly with air
cleaner hose connected.
2. REMOVE DRIVE BELT
Loosen the drive belt tension by turning the drive belt tensioner
counterclockwise, and remove the drive belt.
3. DISCONNECT 2 VACUUM HOSES
Remove the 2 clips and disconnect the 2 vacuum hoses.
4. DISCONNECT RETURN HOSE
Remove the clip and disconnect the return hose.
5. DISCONNECT PRESSURE FEED TUBE
Remove the union bolt and gasket, disconnect the pressure
feed tube.
6. REMOVE PS VANE PUMP ASSEMBLY
Remove the 2 bolts, nut, stud bolt and PS vane pump assembly.

SR0V7±04
F06739
± STEERINGPOWER STEERING VANE PUMP
SR±29
3256 Author: Date:
2005 SEQUOIA (RM1146U)
DISASSEMBLY
NOTICE:
When using a vise, do not overtighten it.
1. MEASURE PS VANE PUMP ROTATING TORQUE
(a) Check that the pump rotates smoothly without abnormal
noise.
(b) Temporarily install the bolt.
(c) Using a torque wrench, check the pump rotating torque.
Rotating torque:
0.28 N´m (2.8 kgf´cm, 2.4 in.´lbf) or less
2. REMOVE SUCTION PORT UNION
(a) Remove the bolt and suction port union.
(b) Remove the O±ring from the union.
3. REMOVE PRESSURE PORT UNION, FLOW CONTROL
VALVE AND SPRING
(a) Remove the pressure port union, the flow control valve
and spring.
(b) Remove the O±ring from the pressure port union.
4. REMOVE REAR HOUSING
(a) Remove the 4 bolts and rear housing.
HINT:
If the wave washer and side plate are stuck to the rear housing,
lightly tap the rear housing with a plastic hammer, and remove
the wave washer and side plate.
(b) Remove the 2 O±rings from the rear housing.
5. REMOVE WAVE WASHER
6. REMOVE SIDE PLATE
7. REMOVE GASKET
8. REMOVE CAM RING, 10 VANE PLATES AND VANE
PUMP ROTOR
(a) Using a screwdriver, remove the snap ring from the vane
pump shaft.
(b) Remove the cam ring, 10 vane plates and vane pump ro-
tor.
NOTICE:
Be careful not to drop the plates.
9. REMOVE VANE PUMP SHAFT WITH VANE PUMP
PULLEY
10. REMOVE STRAIGHT PINS
Remove the 2 pins from the front housing.

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.)

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

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.

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.

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)

± 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)