TOYOTA AVALON 2001 Service Repair Manual

R06172
N00401
R11572
Teflon Ring
R11573
SST
Teflon Ring SR-48
- STEERINGPOWER STEERING GEAR
1511 Author
: Date
:
2001 AVALON (RM808U)
(c) Expand a new teflon ring with your fingers.
NOTICE:
Be careful not to over expand the ring.
(d) Coat the teflon ring with power steering fluid.
(e) Install the teflon ring to the steering rack, and settle it
down with your fingers.
5. IF NECESSARY, REPLACE 4 TEFLON RINGS
(a) Using a screwdriver, remove the 4 teflon rings from the
control valve assembly.
NOTICE:
Be careful not to damage the grooves for the teflon ring.
(b) Expand 4 new teflon rings with your fingers.
NOTICE:
Be careful not to over expand the teflon ring.
(c) Coat the teflon rings with power steering fluid.
(d) Install the teflon rings to the control valve assembly, and
settle them down with your fingers.
(e) Carefully slide the tapered end of SST over the teflon
rings until the teflon rings fit to the control valve assembly.
SST 09631-20081
NOTICE:
Be careful not to damage the teflon rings.

SR0EN-06
F08851
Connector
Oil Pressure Switch
Union Bolt

Gasket
Return HoseDrive Belt
Clamp Plate
Pressure Feed Tube
Pressure Feed Tube
PS Vane Pump AssemblyHolder
Clamp Plate
Clamp Plate
Front Fender Apron Seal RH

Non-reusable part
43 (440, 32)
*29 (300, 22)
7.8 (80, 69 in.´lbf)
21 (210, 15)
52 (530, 38)
43 (440, 32)
25 (250, 18)
*22 (230, 17)
N´m (kgf´cm, ft´lbf): Specified torque
* For use with SST
- STEERINGPOWER STEERING VANE PUMP
SR-25
1488 Author
: Date
:
2001 AVALON (RM808U)
POWER STEERING VANE PUMP
COMPONENTS

F08852
Pressure Port Union

O-Ring
Flow Control Valve
Suction Port Union
SpringRear Housing
Rear
Bracket
Front Housing
Front Bracket
Vane Pump Shaft
Vane Pump PulleyVane Pump
Rotor

Straight Pin
Wave Washer
O-Ring
O-Ring

Gasket
Side Plate
Cam Ring
Vane Platex 10

Oil Seal


Snap Ring

Non-reusable part
Power steering fluid
83 (850, 62)
13 (130, 9)
43 (440, 32)
43 (440, 32)
17 (170, 12)
17 (170, 12)
44 (450, 33)
N´m (kgf´cm, ft´lbf): Specified torque
SR-26
- STEERINGPOWER STEERING VANE PUMP
1489 Author
: Date
:
2001 AVALON (RM808U)

SR0EP-04
F08853
F08854
SST
SR-28
- STEERINGPOWER STEERING VANE PUMP
1491 Author
: Date
:
2001 AVALON (RM808U)
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) Using a torque wrench, check the pump rotating torque.
Rotating torque:
0.3 N´m (2.8 kgf´cm, 2.4 in.´lbf) or less
2. REMOVE VANE PUMP PULLEY
(a) Using SST, stop the pulley rotating and loosen the nut.
(b) Remove the nut and vane pump pulley from the vane
pump shaft.
SST 09960-10010 (09962-01000, 09963-01000)
3. REMOVE FRONT AND REAR BRACKETS
Remove the 3 bolts, 2 nuts, front and rear brackets.
4. REMOVE SUCTION PORT UNION
(a) Remove the bolt and suction port union.
(b) Remove the O-ring from the suction port union.
5. REMOVE PRESSURE PORT UNION, FLOW CONTROL
VALVE AND SPRING
(a) Remove the pressure port union, flow control valve and
spring.
(b) Remove the O-ring from the pressure port union.
6. REMOVE REAR HOUSING
(a) Remove the 4 bolts and rear housing.
(b) Remove the 2 O-rings from the rear housing.
7. REMOVE WAVE WASHER
8. REMOVE SIDE PLATE
9. REMOVE GASKET
10. REMOVE CAM RING, 10 VANE PLATES AND VANE
PUMP ROTOR
(a) Remove the cam ring and 10 vane plates.
NOTICE:
Take care not to drop the plate.
(b) Using a screwdriver, remove the snap ring and vane
pump rotor from the vane pump shaft.
11. REMOVE VANE PUMP SHAFT
12. REMOVE 2 STRAIGHT PINS
Remove the 2 straight pins from the front housing.

SR0RT-02
R15196
Caliper Gauge
Micrometer
Vane Pump Shaft
Bushing
Front Housing
N00372
Thickness
Length Height
R10282
Feeler Gauge
- STEERINGPOWER STEERING VANE PUMP
SR-29
1492 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION
NOTICE:
When using a vise, do not overtighten it.
1. MEASURE OIL CLEARANCE BETWEEN VANE PUMP
SHAFT AND BUSHING
Using a micrometer and caliper gauge, measure the oil clear-
ance.
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 vane 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 vane pump rotor groove and vane plate.
Maximum clearance: 0.035 mm (0.0014 in.)

R13897Inscribed Mark
R11288
R07591
Compressed Air
R11563Inscribed Mark
SR-30
- STEERINGPOWER STEERING VANE PUMP
1493 Author
: Date
:
2001 AVALON (RM808U)
If it is more than the maximum, replace the vane plate and/or
vane pump 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 vane pump ro-
tor and cam ring marks:
Vane pump 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 flow control valve with power steering fluid and
check that it falls smoothly into the flow control valve hole
by its own weight.
(b) Check the flow control valve for leakage. Close one of the
holes and apply 392 - 490 kPa (4 - 5 kgf/cm
2, 57 - 71 psi)
of compressed air into the opposite side hole, and confirm
that air does not come out from the end holes.
If necessary, replace the flow control valve with the one having
the same letter as inscribed on the front housing.
Inscribed Mark: A, B, C, D, E or F

R08702
Vernier Calipers
- STEERINGPOWER STEERING VANE PUMP
SR-31
1494 Author
: Date
:
2001 AVALON (RM808U)
4. INSPECT SPRING
Using vernier calipers, measure the free length of the spring.
Minimum free length: 32.3 mm (1.272 in.)
If it is not within the specification, replace the spring.

SR0ES-07
F08856
Pressure
Feed
Tube
Stopper
F08855
A
B
Z19285
Clamp
Engine Wire
SST Fulcrum
Length
- STEERINGPOWER STEERING VANE PUMP
SR-35
1498 Author
: Date
:
2001 AVALON (RM808U)
INSTALLATION
1. INSTALL PRESSURE FEED TUBE
Install the pressure feed tube and gasket to the PS vane pump
assembly with union bolt.
HINT:
Make sure the stopper of the pressure feed tube touches the
front bracket as shown in the illustration, then install the union
bolt.
Torque: 52 N´m (530 kgf´cm, 38 ft´lbf)
2. INSTALL OIL PRESSURE SWITCH
Torque: 21 N´m (210 kgf´cm, 15 ft´lbf)
NOTICE:
Be careful to prevent oil seal from being attached to the
connector.
3. INSTALL PS VANE PUMP ASSEMBLY WITH PRESS-
ER FEED TUBE
Temporarily install the PS vane pump assembly with 2 (A and
B) bolts.
4. INSTALL DRIVE BELT
(a) Adjust drive belt tension (See page SR-3).
(b) Using SST, torque the bolt A.
SST 09249-63010
Torque: 29 N´m (300 kgf´cm, 22 ft´lbf)
HINT:

Use a torque wrench with a fulcrum length of 300 mm
(11.81 in.).

Disconnect the clamp with engine wire.
(c) Torque the bolt B.
Torque: 43 N´m (440 kgf´cm, 32 ft´lbf)
(d) Connect the connector to the oil pressure switch.

F13585
SST Pressure
Feed Tube
Fulcrum
Length
SR-36
- STEERINGPOWER STEERING VANE PUMP
1499 Author
: Date
:
2001 AVALON (RM808U)
5. CONNECT PRESSURE FEED TUBE
(a) Using a spanner, hold the pressure feed tube steadily and
using SST, connect the pressure feed tube.
SST 09023-12700
Torque: 23 N´m (230 kgf´cm, 17 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) Install the 2 holders and 2 clamp plates to the pressure
feed tube with bolt.
(c) Install the 2 clamp plate with 2 nuts.
Torque: 7.8 N´m (80 kgf´cm, 69 in.´lbf)
6. CONNECT RETURN HOSE
Connect the return hose with the clip.
7. INSTALL FRONT FENDER APRON SEAL RH
Install the front fender apron seal RH with 2 bolts.
8. BLEED POWER STEERING SYSTEM
(See page SR-4)

SR0ER-03
R13458
Inscribed Mark
R01149
Round End
R11292
- STEERINGPOWER STEERING VANE PUMP
SR-33
1496 Author
: Date
:
2001 AVALON (RM808U)
REASSEMBLY
NOTICE:
When using a vise, do not overtighten it.
1. COAT PARTS INDICATED BY ARROWS WITH POWER
STEERING FLUID (See page SR-25)
2. INSTALL 2 STRAIGHT PINS
Using a plastic hammer, tap in 2 new straight pins.
NOTICE:
Be careful not to damage the straight pins.
3. INSTALL VANE PUMP SHAFT
4. INSTALL CAM RING
Align the holes of the cam ring and 2 straight pins, and install
the cam ring with the inscribed mark facing outward.
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 10 VANE PLATES
Install the 10 vane plates with the round end facing outward.
7. INSTALL GASKET
Install a new gasket.
8. INSTALL SIDE PLATE
Align the holes of the side plate and 2 straight pins, and install
the side plate.
9. INSTALL WAVE WASHER
Install the wave 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 rear housing.
(b) Install the rear housing with 4 bolts.
Torque: 17 N´m (170 kgf´cm, 12 ft´lbf)