240—STEERING
CHRYSLER SERVICE MANUAL
POWER STEERING
10.
DESCRIPTION
The Power Steering Unit (Fig. 3) incorporates
two basic gear mechanisms, a worm and worm
connector, and rack and sector gear.
The hydraulic system of power steering gear
consists of a double-acting piston, a valve
(which fits inside the piston), and hydraulic
reaction chamber (which gives driver "feel"
of road). Axial positioning of valve directs
high pressure oil to one side or the other of
double-acting piston.
Other components of hydraulic system are a
generator-driven oil pump with pressure relief
valve and flow control valve, filter and an oil
reservoir.
SERVICE PROCEDURES
11.
REMOVAL OF POWER STEERING GEAR
COLUMN JACKET
Remove steering wheel ornament and steering
wheel. Remove directional signal switch oper-
ating arm (arm is threaded into signal switch)
and loosen two screws attaching directional
switch to jacket tube.
Remove two screws attaching jacket tube
housing shroud at instrument panel, disengage
shroud at rubber retainer at floor, and remove
shroud. Remove two Phillips head screws at
steering post bracket clamp at instrument
panel.
Disconnect direction indicator wires and
horn wire at Wade connectors below instru-
ment panel. Loosen two screws and nuts at
steering gear housing jack at lower clamp.
Grasp column jack at upper end and, while
carefully turning assembly clockwise, pull up-
ward to remove column jacket assembly.
12.
INSTALLATION OF POWER STEERING
GEAR COLUMN JACKET
Install column jacket over steering column tube
and position jacket over the power steering
gear housing. Be sure rubber sleeve is in posi-
RECIRCULATING BALL WORM
RECIRCULATiNG BALL NUT
FILLER TUBE'
OIL INLET
\
STEERING SHAFT
FLEXIBLE COUPLING
HYDRAULIC REACTION ASSEMBLY
VALVE OPERATING ROD
UPPER PISTON ROD
SPOOL VALVE
BACK PRESSURE VALVE
PISTON
/ LOWER PISTON ROD
AND RACK
OIL OUTLET
GEARSHAFT
STEERING GEAR ARM
55x27A
Fig.
3—Power Steering Gear (Cross Sectional View)
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