Toyota Sequoia (2005). Manual - part 817

SR0RF–05

F06719

Vane Pump Shaft

Front Housing

Bushing

N00372

Height

Thickness

Length

R10282

Feeler Gauge

SR–30

–

STEERING

POWER STEERING VANE PUMP

3257

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.)

R13897

Inscribed Mark

W04759

F04865

Compressed Air

F04866

Inscribed Mark

–

STEERING

POWER STEERING VANE PUMP

SR–31

3258

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 mark

Vane plate part

number

Vane plate length

mm (in.)

None

44345–04010

14.999–15.001

(0.59051–0.59059)

1

44345–04020

14.997–14.999

(0.59043–0.59051)

2

44345–04030

14.995–14.997

(0.59035–0.59043)

3

44345–04040

14.993–14.995

(0.59027–0.59035)

4

44345–04050

14.991–14.993

(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

–

STEERING

POWER STEERING VANE PUMP

3259

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

–

STEERING

POWER STEERING VANE PUMP

SR–33

3260

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.