Power Steering - Chrysler Stratus RHD 1999 Electronic Service Manual

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POWER STEERING . . . . . . . . . . . . . . . . . . . . . . . . 1

POWER STEERING GEAR . . . . . . . . . . . . . . . . . 35
DESCRIPTION AND OPERATION
POWER STEERING FLUID PRESSURE
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
POWER STEERING SYSTEM AND
COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . 1
DIAGNOSIS AND TESTING
POWER STEERING SYSTEM FLOW AND
PRESSURE TEST . . . . . . . . . . . . . . . . . . . . . . . 9
STEERING DIAGNOSIS CHARTS . . . . . . . . . . . . . 2
SERVICE PROCEDURES
POWER STEERING FLUID LEVEL CHECK . . . . . 11
REMOVAL AND INSTALLATION
POWER STEERING FLUID COOLER . . . . . . . . . 18
POWER STEERING FLUID COOLER LINES . . . . 19
DESCRIPTION AND OPERATION
POWER STEERING SYSTEM AND
COMPONENTS
Turning of the steering wheel is converted into lin-
ear travel through the meshing of the helical pinion
teeth with the rack teeth. Power assist steering is
provided by an open center, rotary type control valve.
It is used to direct oil from the power steering pump
to either side of the integral steering rack piston.
Road feel is controlled by the diameter of a torsion
bar which initially steers the vehicle. As steering
effort increases as in a turn, the torsion bar twists,
causing relative rotary motion between the rotary
valve body and valve spool. This movement directs
oil behind the integral rack piston, which in turn
builds up hydraulic pressure and assists in the turn-
ing effort.
STEERING
CONTENTS
page
POWER STEERING PUMP . . . . . . . . . . . . . . . . . 22
STEERING COLUMN . . . . . . . . . . . . . . . . . . . . . . 44
POWER STEERING
INDEX
page
POWER STEERING FLUID PRESSURE HOSE . . 13
POWER STEERING FLUID PRESSURE
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
POWER STEERING FLUID RETURN HOSE . . . . 16
POWER STEERING FLUID SUPPLY HOSE
(2.0L/2.4L ENGINE) . . . . . . . . . . . . . . . . . . . . . 12
POWER STEERING FLUID SUPPLY HOSE
(2.5L ENGINE) . . . . . . . . . . . . . . . . . . . . . . . . . 12
SPECIFICATIONS
POWER STEERING FASTENER TORQUE
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . 21
SPECIAL TOOLS
POWER STEERING . . . . . . . . . . . . . . . . . . . . . . 21
This vehicle is equipped with either standard
power steering or an optional speed-sensitive vari-
able-assist power steering.
The optional speed-sensitive variable-assist power
steering is built into the power steering pump. It pro-
vides full power steering assist at engine idle. As
engine speed is increased, power assist is gradually
reduced to provide a firm, responsive feel to the
steering system at higher vehicle speeds.
The power steering system consists of these major
components:
• POWER STEERING PUMP
• POWER STEERING GEAR
• POWER STEERING FLUID RESERVOIR
• POWER STEERING FLUID SUPPLY HOSE
• POWER STEERING FLUID PRESSURE HOSE
• POWER STEERING FLUID RETURN HOSE
• POWER STEERING FLUID COOLER
• POWER STEERING FLUID COOLER TUBES
For information on the first two components, refer
to their respective sections within this service man-
STEERING 19 - 1
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