Subaru XT 1988 Service Manual page 944

4-3
STEERING SYSTEM
Creaking noise
Abnormal inside of Gear- Replace bad parts of Gear-
(intermittent)
box ASSY box ASSY
While engine is running
with steering turned Abnormal bearing for
I Apply grease or replace
Steering shaft
*10
Generates when turning
If the noise goes off when
steering wheel with brake
brake is released, normal
(service or parking) applied
*11
Vibration Too low engine speed at Adjust and Instruct
While engine is running start customers
with/without steering
turned
I V .
I
Fix wrong part.
ane pump aeration
Vent air
Damaged valve in Oil pump Replace Oil pump ASSY,
ASSY, Gearbox ASSY or bad parts of Gearbox ASSY
Motor pump ASSY
or Motor pump ASSY
Looseness of play of
Retighten
Steering, Suspension parts
*9
Oil pump or Motor pump makes whine or growl noise slightly due to its mechanism. Even if the noise can
be
heard when
steering wheel
is
turned at standstill there is no abnormal function in the system provided that the noise eliminates when the
car is running.
*10 When stopping with service brake and/or parking brake applied, power steering can be operated easily due to its light
steering effort. If doing so, the disk rotates slightly and makes creaking noise. The noise is generated by creaking between
the disk and pads. If the noise goes off when the brake is released, there is no abnormal function in the system.
*11 There may be a little vibration around the steering devices when turning steering wheel at standstill, even though the
component parts are properly adjusted and have no defects.
, Hydraulic systems are likely to generate this kind of vibration as well as working noise and fluid noise because of combined
conditions, i.e.,
Road surface and tire surface, Engine speed and turning speed of steering wheel, Fluid temperature and braking condition.
This phenomena does not indicate there is some abnormal function in the system.
The vibration can be known when steering wheel is turned repeatedly at various speeds from slow to rapid step by step
with parking brake applied on concrete road and in "0" range for automatic transmission vehicle.
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