Chrysler DODGE D150 1993 Service Manual page 965

19 - 4 STEERING
POWER STEERING SYSTEM DIAGNOSIS
P U M P NOISI
There is some noise in all power steering systems. One of the most common is a hissing sound evident at standstill parking. Hiss is
a high frequency noise similar to that experienced while slowly closing a water tap. The noise is present in every valve and results
from high velocity fluid passing valve orifice edges. 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.
C O N D I T I O N
P O S S I B U C A U S I CORRICriON
OBJECTIONALHISSOR
WHISTLE
1. Noisy valve in gear 1. Check for proper seal between steering
column coupling and dash seal.
Ensure steering column lower coupling
has no metal-to-metal contact
within the coupling by performing an
electrical continuity check. (Remove
coupling for check.)
If hiss is still extremely objectionable,
replace steering gear.
RATTLE OR CLUNK
1. Gear loose on front crossmember
2. Crossmember-to-frame bolts or studs loose
3. Tie rod looseness (outer or inner)
4. Pressure hose touching other parts of vehicle
5. Noise internal to gear
1. Check gear-to-crossmember mounting
bolts. Tighten to specification.
2. Torque bolts and studs to specifications.
3. Check tie rod pivot points for wear.
Replace if necessary.
4. Adjust hose to proper position by
loosening, repositioning, and retightening
fitting. Do not bend tubing.
5. Replace gear.
CHIRP OR SQUEAL (IN
THE AREA OF PUMP)
PARTICULARLY
NOTICEABLE AT FULL
WHEEL TRAVEL A N D
DURING STANDSTILL
PARKING
1. Loose belt 1. Adjust belt tension to specification.
9119-2