Chrysler Vehicle User Manual page 1111

19 - 2 STEERING
STEERING (Continued)
OPERATION
The gear acts as a rolling thread between the
worm shaft and rack piston. The worm shaft is sup-
ported by a thrust bearing at the upper end. When
the worm shaft is turned from input from the steer-
ing column the rack piston moves. The rack piston
teeth mesh with the pitman shaft. Turning the worm
shaft turns the pitman shaft, which turns the steer-
ing linkage.
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - POWER STEERING
SYSTEM DIAGNOSIS CHARTS
There is some noise in all power steering systems. One of the most common is a hissing sound evident at a
standstill parking. Or when the steering wheel is at the end of it's travel. Hiss is a high frequency noise similar
to that of a water tap being closed slowly. The noise is present in all valves that have a high velocity fluid passing
through an orifice. There is no relationship between this noise and steering performance.
CONDITION
OBJECTIONAL HISS
OR WHISTLE
RATTLE OR CLUNK
CHIRP OR SQUEAL
STEERING NOISE
POSSIBLE CAUSES
1. Steering intermediate shaft to dash
panel seal.
2. Noisy valve in power steering gear.
1. Gear mounting bolts loose.
2. Loose or damaged suspension
components/track bar.
3. Loose or damaged steering linkage.
4. Internal gear noise.
5. Pressure hose in contact with other
components.
1. Loose belt.
Fig. 3 POWER STEERING GEAR & PUMP - 2.4L
1 - REMOTE RESERVOIR
2 - POWER STEERING PUMP
3 - PUMP MOUNT BRACKET
4 - MOUNTING BOLTS (3)
5 - PRESSURE SWITCH LOCATION
6 - PRESSURE OUTLET HOSE (GEAR TO PUMP)
7 - RETURN HOSE (RESERVOIR TO PUMP)
8 - CLAMPS
9 - STEERING GEAR
10 - INLET HOSE (RESERVOIR TO GEAR)
1. Check and repair seal at dash panel.
2. Replace steering gear.
1. Tighten bolts to specification.
2. Inspect and repair suspension.
3. Inspect and repair steering linkage.
4. Replace gear.
5. Reposition hose.
1. Adjust or replace.
CORRECTION
TJ