Chrysler Town & Country/Voyager, Dodge Caravan, Plymouth Voyager. Manual — part 42
STEERING
CONTENTS
page
page
ACUSTAR STANDARD AND TILT STEERING
COLUMN
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
GENERAL INFORMATION
. . . . . . . . . . . . . . . . . . 1
POWER STEERING GEAR
. . . . . . . . . . . . . . . . . 20
POWER STEERING PUMPS
. . . . . . . . . . . . . . . . 2
SPECIFICATIONS AND TIGHTENING
REFERENCE
. . . . . . . . . . . . . . . . . . . . . . . . . . 35
GENERAL INFORMATION
Safety goggles should be worn at all times
when working on any steering gear or pump.
Throughout this group, references may be made to a
particular vehicle by letter or number designation. A
chart showing the breakdown of these designations is
included in the Introduction Section at the front of this
service manual.
The power steering system consists of these four
major components. Power Steering Pump, Power
Steering Gear, Pressure Hose, and Return Line. Turn-
ing of the steering wheel is converted into linear 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 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 required
steering effort increases, as in a turn. The torsion bar
twists, causing relative rotary motion between the
rotary valve body and the valve spool. This movement
directs oil behind the integral rack piston, which, in
turn, builds up hydraulic pressure and assists in the
turning effort.
.
STEERING
19 - 1
POWER STEERING PUMPS
INDEX
page
page
Checking Power Steering Fluid Level
. . . . . . . . . . 10
General Information
. . . . . . . . . . . . . . . . . . . . . . . . 2
Power Steering Hoses
. . . . . . . . . . . . . . . . . . . . . 10
Power Steering Pump Fluid Reservoir . . . . . . . . . . 19
Power Steering Pump Pressure Test
. . . . . . . . . . . 10
Power Steering Pump Pulley
. . . . . . . . . . . . . . . . 18
Power Steering Pump Removal
. . . . . . . . . . . . . . 12
Power Steering Pump Service
. . . . . . . . . . . . . . . . 9
Power Steering Pump—Initial Operation
. . . . . . . . 19
Steering Components Service Diagnosis . . . . . . . . . 3
GENERAL INFORMATION
Hydraulic pressure for the operation of the power
steering gear is provided by a belt driven power steer-
ing pump. The power steering pump is a constant flow
rate and displacement vane type pump. Different
styles of Saginaw power steering pumps are used
depending on the engine application of the vehicle. On
all four cylinder applications and 3.0-liter V-6 the Vane
Submerged integral reservoir (Fig. 1) power steering
pump is used. On the 3.3-liter V-6 applications the
Vane-Submerged remote reservoir (Fig. 2) power steer-
ing pump is used.
On the integral reservoir type pump (Fig. 1) the
pump housing and internal components are combined
with the reservoir to form a one-piece mechanism.
The remote reservoir type pump (Fig. 2) has the
pump housing and internal components combined with
the fluid housing. But it has a remote reservoir for the
power steering fluid supply.
Drive tangs on the power steering pump pinion, mate
loosely with the stub shaft of the pump. This is to allow
manual steering control to be maintained, if the drive
belt on the power steering pump should break. How-
ever, under these conditions, steering effort will signifi-
cantly increase.
Fig. 1 Vane Submerged Power Steering Pump (Ham
Can)
Fig. 2 Vane Submerged Remote Reservoir Power
Steering Pump
19 - 2
STEERING
.
STEERING COMPONENTS SERVICE DIAGNOSIS
POWER STEERING SERVICE DIAGNOSIS
.
STEERING
19 - 3
POWER STEERING SERVICE DIAGNOSIS
19 - 4
STEERING
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