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19 - 4
STEERING
STEERING (Continued)
CONDITION
WHINE OR GROWL
(POWER STEERING
PUMP)**
SUCKING AIR SOUND
SQUEAK OR RUBBING
SOUND
SCRUBBING OR
KNOCKING NOISE.
NOTE: * There is some noise in all power steering
systems. One of the most common is a hissing
sound evident when turning the steering wheel
when at a standstill or when parking and the steer-
ing wheel is at the end of its travel. Hiss is a very
high frequency noise similar to that experienced
while slowly closing a water tap. The noise is
present in every valve and results when high veloc-
ity fluid passes valve orifice edges. There is no
relationship between this noise and the perfor-
mance of the steering system.
POSSIBLE CAUSES
1. Low fluid level.
2. Power steering hose touching
vehicle body or frame.
3. Extreme wear of power steering
pump internal components.
1. Loose clamp on power steering
fluid return hose.
2. Missing O-Ring on power steering
hose connection.
3. Low power steering fluid level.
4. Air leak between power steering
fluid reservoir and power steering
pump.
1. Steering column shroud rubbing.
2. Steering column shaft rubbing.
3. Clockspring noisy.
4. Steering gear internally noisy.
1. Incorrect tire or wheel size.
2. Interference between steering
gear and other vehicle components.
3. Steering gear internal stops worn
excessively allowing tires to be
steered excessively far.
1. Fill power steering fluid reservoir to
proper level and check for leaks (make
sure all air is bled from the system
fluid).
2. Adjust hose to proper position by
loosening, repositioning, and tightening
fitting to specified torque. Do not bend
tubing. Replace hose if damaged.
3. Replace power steering pump and
flush system as necessary.
1. Tighten or replace hose clamp.
2. Inspect connection and replace
O-Ring as required.
3. Fill power steering fluid reservoir to
proper level and check for leaks.
4. Replace power steering pump (with
reservoir).
1. Realign shrouds as necessary.
2. Move or realign item rubbing shaft.
3. Remove clockspring. Reinstall wheel.
If noise is gone, replace clockspring.
4. Replace steering gear.
1. Replace incorrect size tire or wheel
with size used as original equipment.
2. Check for bent or misaligned
components and correct as necessary.
3. Replace steering gear.
NOTE: ** Power steering pump growl results from
the development of high pressure fluid flow. Nor-
mally this noise level should not be high enough to
be objectionable.
CORRECTION
JR
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