tire type LEXUS SC400 1991 Service Repair Manual

9. CHECK PRESSURE READING WITH STEERING WHEELTURNED TO FULL LOCK
Be sure the pressure gauge valve is fully opened and the en-
gine idling.
Minimum pressure:
7,355 kPa (75 kgf/cm
2, 1,067 psi)
NOTICE:
w Do not maintain lock position for more than 10 seconds.
w Do not let the fluid temperature become too high.
If pressure is low, the gear housing has an internal leak and
must be repaired or replaced.
10. MEASURE STEERING EFFORT
(a) Center the steering wheel and run the engine at idle.
(b) Using a spring scale, measure the steering effort in both directions.
Maximum steering effort:
40 N (4.1 kgf, 9.0 lbf)
If steering effort is excessive, repair the power steering unit.
HINT: Be sure to consider the tire type, pressure and contact
surface before making your diagnosis.
(c) Disconnect the solenoid connector.
(d) Using a spring scale, measure the steering effort in both directions.
(Reference)
Maximum steering effort:
76 N (7.7 kgf, 17.0 lbf)
If steering effort is not heavier than (b), check solenoid.
HINT: Be sure to consider the tire type, pressure and contact
surface before making your diagnosis.
±
STEERING POWER STEERINGSR±117
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SUSPENSION BALL JOINT INSPECTION ± PG012-02 October 11, 2002
Page 3 of 5
MODELLOCATION
LOWER BALL JOINT OR SUSPENSION
BALL JOINTUPPER BALL JOINT
MODELLOCATIONINSP.
METHODMAX. PLAYTURNING TORQUEINSP.
METHODMAX. PLAYTURNING TORQUE
IS 300
(JCE10)
Front1±(A)0.016 in.
(0.4) mm27 in. lbf
(3.0 N m)
or Less
2No Play
31 in. lbf
(3.5 N m)
or Less
(JCE10)
2001±2003
Rear3No Play Felt31 in. lbf
(3.5 N m)
or Less2No Play
Felt27 in. lbf
(3.0 N m)
or Less
RX 300
(MCU10, 15)
1999 2003
Front1±(B)No Play Felt31 in. lbf
(3.5 N m)
or Less
N/AN/AN/A
1999±2003RearN/AN/AN/AN/AN/AN/A
ES 250 & 300 (VZV21,
MCV20, 30)Front1±(B)No Play Felt31 in. lbf
(3.5 N m)
or Less
N/AN/AN/A
MCV20, 30)
1990±2003RearN/AN/AN/AN/AN/AN/A
LX 470
(UZJ100)
1998 2003
Front1±(A)No Play Felt27 in. lbf
(3.0 N m)
or Less
2No Play Felt40 in. lbf
(4.5 N m)
or Less
1998±2003RearN/AN/AN/AN/AN/AN/A
NOTE:
Be sure to check the table for the
applicable inspection type based on
the vehicle model.
Refer to the table for the standard
free play values.
1. Inspect Lower Ball Joint Free Play
A. Move the hub up and down byhand (Most models with
wish±bone suspension):
a. Remove the tire.
b. Install the 2 lug nuts.
c. Inspect the free play while moving the lug nuts up and
down at a force of 67 lbf
(294 N, 30 kgf).
Inspection
Information
Table
(Continued)
Free Play
Inspection
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SUSPENSION BALL JOINT INSPECTION ± PG012-02 October 11, 2002
Page 4 of 5
B. Move the lower arm by hand (All
models with strut type suspension
and some models with wish±bone
type suspension):
a. Lift up the vehicle.
b. Inspect the free play while moving the lower arm up and
down at a force of 67 lbf
(294 N, 30 kgf).
2. Inspect Upper Ball Joint Play Move the upper arm by hand (Models
where the LOWER control arm are
linked by a torsion bar, and all models
using a coil spring.
A. Remove the front tire.
B. Inspect the free play while moving the upper arm up and down at a
force of 67 lbf (294 N, 30 kgf).
3. Inspect the Suspension Arm Ball Joint Free Play
A. Lift up the vehicle.
B. Inspect the free play while moving the control arm by hand.
(Reference)
Free Play Inspection Method
(Gauge Installation) Position the dial gauge between the
arm (upper or lower) and the knuckle,
and measure free play.
(This illustration shows how to
measure free play for vehicles with
double wishbone type suspension
with coil spring).
Inspect Ball Joint Dust Cover
Check for cracks and grease leaks on the
dust cover (boots).Free Play
Inspection
(Continued)
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