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.
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