Lexus SC300 / Lexus SC400. Manual — part 747
(b) Coat new 2 O–rings with power steering fluid and install them
to the side front plate.
(c) Coat a new O–rings with power steering fluid and install it to
the side rear plate.
(d) Using SST and a press, press in the side front plate.
SST 09238–47012
HINT: Match the wide hole on the side front plate with the
longer straight pin.
NOTICE: Be careful not to damage the O–rings.
(e) Install the shorter straight pin to the side front plate.
(f)
Match the wide hole of the cam ring with the longer straight
pin, and install the cam ring.
HINT: Install the cam ring with the inscribed mark facing the
rear.
(g) Install the rotor to the shaft with the inscribed mark facing the
rear.
–
STEERING
POWER STEERING
SR–127
(h) Coat the 10 vane plates with power steering fluid.
(i)
Install the 10 vane plates with the round end facing outward.
(j)
Match the wide hole with the longer straight pin and press in
the side rear plate with a press.
NOTICE: Be careful not to damage the O–ring.
4. INSTALL
WAVE
WASHER
Install
the wave washer so that its protrusions fit into the slots
in the side rear plate.
5.
INSTALL REAR BRACKET
(a) Coat a new O–ring with power steering fluid and install it to
the rear bracket.
(b) Install the rear bracket and tighten the 4 bolts.
Torque: 39 N
⋅
m (400 kgf
⋅
cm, 29 ft
⋅
lbf)
SR–128
–
STEERING
POWER STEERING
6.
MEASURE PUMP SHAFT PRELOAD
(a) Check that the shaft rotates smoothly without abnormal
noise.
(b) Temporarily install the pulley nut and check the rotating
torque.
Rotating torque:
0.1 N
⋅
m (1.0 kgf
⋅
cm, 0.9 in.
⋅
lbf) or less
7.
INSTALL FLOW CONTROL VALVE, SPRING, SPRING
SEAT AND PRESSURE PORT UNION
(a) Coat new O–rings with power steering fluid and install them
to the spring seat and pressure port union.
HINT: Install a thick O–ring to the spring seat and a thin O–
ring to the pressure port union.
(b) Install the spring seat with the bolt hole facing out–ward.
(c) Using snap ring pliers, install a new snap ring.
(d) Install spring and valve to the front housing.
(e) Install and torque the pressure port union.
Torque: 69 N
⋅
m (700 kgf
⋅
cm, 51 ft
⋅
lbf)
–
STEERING
POWER STEERING
SR–129
8.
INSTALL SUCTION PORT UNION
(a) Coat a new O–ring with power steering fluid and install it to
the suction port union.
(b) Install the suction port union with the 2 bolts.
Torque: 13 N
⋅
m (130 kgf
⋅
cm, 9 ft
⋅
lbf)
9. INSTALL
PUMP
PULLEY
(a) Install the pulley and nut to the shaft.
(b) Using SST, torque the set nut.
SST 09278–54012
Torque: 43 N
⋅
m (440 kgf
⋅
cm, 32 ft
⋅
lbf)
SR–130
–
STEERING
POWER STEERING
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