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STEERING
19 - 19
SYSTEM SERVICE DIAGNOSIS
CONDITION
POSSIBLE CAUSE
CORRECTION
HISSING NOISE IN
STEERING GEAR
0)
There is some noise in all power steering
systems. One of the most common is a
hissing sound most evident at standstill
parking. There is no relationship between
this noise and performance of the steering.
Hiss may be expected when steering wheel
is at end of travel or when slowly turning
at standstill.
(1)
Slight hiss is normal and in no way affects
steering. Do not replace valve unless hiss
is extremely objectionable. A replacement
valve will also exhibit slight noise and is
not always a cure. Investigate clearance
around flexible coupling rivets. Be sure
steering shaft and gear are aligned so
flexible coupling rotates in a flat plane
and is not distorted as shaft rotates. Any
metal-to-metal contacts through flexible
coupling will transmit valve hiss into
passenger compartment through the
steering column.
RATTLE OR CHUCKLE
NOISE IN STEERING
GEAR
(1)
Gear loose on frame.
H)
Check gear-to-frame mounting screws.
Tighten screws to 88 N»m (65 foot pounds)
torque.
(2)
Steering linkage looseness.
(2)
Check linkage pivot points for wear.
Replace if necessary.
(3)
Pressure hose touching other parts of car.
(3)
Adjust hose position. Do not bend tubing
by hand.
(4)
Loose pitman shaft over center adjustment.
(4)
Adjust to specifications.
NOTE:
A slight rattle may occur on turns
because of increased clearance off the "high
point." This is normal and clearance must not
be reduced below specified limits to eliminate
this slight rattle.
(5)
Loose pitman arm.
(5)
Tighten pitman arm nut to specifications.
SQUAWK NOISE IN
STEERING GEAR
WHEN TURNING OR
RECOVERING FROM A
TURN
(1)
Damper O-ring on valve spool cut.
(1)
Replace damper O-ring.
POOR RETURN O F
STEERING WHEEL TO
CENTER
0)
Tires not properly inflated.
(1)
Inflate tires to specified pressure.
(2)
Lack of lubrication in linkage and ball
joints.
(2)
Lube linkage and ball joints.
(3)
Lower coupling flange rubbing against
steering gear adjuster plug.
(3)
Loosen pinch bolt and assemble properly.
(4)
Steering gear to column misalignment.
(4)
Align steering column.
J89 19-28
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