Toyota Sequoia (2005). Manual — part 811
F13254
IN
OUT
Attachment
Pressure Feed Tube
SST
Z15498
Oil
Reservoir
PS Vane
Pump
PS Gear
SST
Closed
Z15499
Oil
Reservoir
PS Vane
Pump
PS Gear
SST
Open
SR–6
–
STEERING
POWER STEERING FLUID
3233
2.
CHECK STEERING FLUID PRESSURE
(a)
Remove the air cleaner assembly with the air cleaner
hose connected (See page
(b)
Disconnect the pressure feed tube from the PS vane
pump (See page
(c)
Connect SST, as shown in the illustration.
SST
09640–10010 (09641–01010, 09641–01030,
09641–01060)
NOTICE:
Check that the valve of the SST is in the open position.
(d)
Bleed the power steering system (See page
).
(e)
Start the engine and run at idle.
(f)
Turn the steering wheel from the lock position to the other
side of lock position several times to boost fluid tempera-
ture.
Fluid temperature: 80
°
C (176
°
F)
(g)
With the engine idling, close the valve of the SST and ob-
serve the reading on the SST.
Minimum fluid pressure:
8,336 kPa (85 kgf/cm
2
, 1,209 psi)
NOTICE:
Do not keep the valve closed for more than 10 se-
conds.
Do not let the fluid temperature become too high.
(h)
With the engine idling, open the valve fully.
(i)
Measure the fluid pressure at engine speeds of 1,000 rpm
and 3,000 rpm.
Difference in fluid pressure:
490 kPa (5 kgf/cm
2
, 71 psi) or less
NOTICE:
Do not turn the steering wheel.
Z15500
Oil
Reservoir
PS Vane
Pump
PS Gear
SST
Open
Lock Position
–
STEERING
POWER STEERING FLUID
SR–7
3234
(j)
With the engine idling and the valve fully opened, turn the
steering wheel left or right to the full lock position.
Minimum fluid pressure:
8,336 kPa (85 kgf/cm
2
, 1,209 psi)
NOTICE:
Do not maintain the lock position for more than 10 se-
conds.
Do not let the fluid temperature become too high.
(k)
Disconnect the SST.
SST
09640–10010 (09641–01010, 09641–01030,
09641–01060)
(l)
Connect the pressure feed tube (See page
).
(m)
Install the air cleaner assembly with air cleaner hose (See
page
(n)
Bleed air from the power steering system
(See page
F06726
Vacuum Hose
SR01X–08
SR–8
–
STEERING
AIR CONTROL VALVE
3235
AIR CONTROL VALVE
INSPECTION
1.
TURN AIR CONDITIONING SWITCH OFF
2.
CHECK IDLE–UP
(a)
Start the engine and run it at idle.
(b)
Fully turn the steering wheel.
(c)
Check that the engine speed decrease when the vacuum
hose of the air control valve is pinched.
(d)
Check that the engine speed increase when the hose is
released.
R07653
SR01Y–11
R09732
–
STEERING
STEERING WHEEL
SR–9
3236
STEERING WHEEL
INSPECTION
1.
CHECK STEERING WHEEL FREE PLAY
(a)
Stop the vehicle and face the tires straight ahead.
(b)
Gently rock the steering wheel up and down with a finger,
and check the steering wheel free play.
Maximum free play: 30 mm (1.18 in.)
2.
CHECK STEERING EFFORT
(a)
Center the steering wheel.
(b)
Remove the steering wheel pad (See page
(c)
Start the engine and run at idle.
(d)
Measure the steering effort in both directions.
Steering effort (Reference):
4.9 N·m (50 kgf·cm, 43 in.·lbf)
HINT:
Check tire type, pressure and contact surface before making
your diagnosis.
(e)
Tighten the steering wheel set nut.
Torque: 50 N·m (510 kgf·cm, 37 ft·lbf)
(f)
Install the steering wheel pad (See page
).
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