Chrysler 1998 Voyager Service Manual page 42

2 - 10 SUSPENSION
DESCRIPTION AND OPERATION (Continued)
Mc PHERSON STRUT ASSEMBLY
The front suspension of the vehicle is supported by
coil springs positioned around the strut assembly.
The springs are contained between an upper seat,
located just below the top strut mount assembly and
a lower spring seat on the strut fluid reservoir.
The top of each strut assembly is bolted to the
upper fender reinforcement (strut tower) through a
rubber isolated mount.
The bottom of the strut assembly attaches to the
steering knuckle with two through bolts. Caster is a
fixed setting on all vehicles and is not adjustable
when an alignment is performed. In the event the
camber setting on a vehicle requires adjustment, a
service strut is available which will provide a method
by which the camber can be adjusted.
The strut assemblies on this vehicle are inter-con-
nected by the front stabilizer bar through 2 link
assemblies attaching the struts to the stabilizer bar.
STEERING KNUCKLE
The steering knuckle (Fig. 1) is a single casting
with legs machined for attachment of the strut
damper, steering linkage, disc brake caliper, and
lower control arm ball joint. The steering knuckle
also has the front hub/bearing assembly mounted to
it. The hub is positioned through the bearing and
knuckle, with the constant velocity stub shaft splined
through the hub.
Fig. 1 Front Steering Knuckle
LOWER CONTROL ARM
The lower control arm is an iron casting. The lower
control arm is mounted to and isolated from the body
of the vehicle using 2 types of rubber bushings. The
front lower control arm bushing is the spool type and
is pressed into the lower control arm, while the rear
uses a bushing that is pushed over a stem on the
lower control arm. The front and rear of the lower
control arm is mounted to the cast crossmember
using a pivot bolt through the center of the front
pivot bushing, and a retainer which traps the rear
bushing in the crossmember.
The ball joint is pressed into the control arm and
has a non-tapered stud with a notch for clamp bolt
clearance. The stud is clamped and locked into the
steering knuckle leg with a clamp bolt.
The ball joint is lubricated for the life of the vehi-
cle and does not require any periodic lubrication.
STABILIZER BAR
The stabilizer bar interconnects both Mc Pherson
strut assemblies of the vehicle and is attached
through rubber isolator bushings to the front suspen-
sion cradle
Jounce and rebound movements affecting one
wheel are partially transmitted to the opposite wheel
to stabilize body roll.
Attachment of the stabilizer bar to the front sus-
pension cradle is through 2 rubber-isolator bushings
and bushing retainers. The stabilizer bar to Mc Pher-
son strut assembly attachment is done utilizing a
sway bar attaching link. All parts of the stabilizer
bar are serviceable, and the stabilizer bar to cross-
member bushings are split for easy removal and
installation. The split in the stabilizer bar to cross-
member bushing should be positioned toward the
rear of the vehicle, with the square corner down
toward the ground, when the stabilizer bar is
installed in the vehicle.
STABILIZER BAR ATTACHING LINK
The stabilizer bar attaching links are used to
attach each end of the stabilizer bar to the front
strut assemblies. This reduces the fore-and-aft rate of
the stabilizer bar from the rest of the vehicle's front
suspension.
HUB AND BEARING ASSEMBLY
The Unit III Front Hub and Bearing Assembly is
used on all front wheel drive vans.
All hub and bearing assemblies mount to the steer-
ing knuckle the same way, but very by the wheel size
on the vehicle. Vehicles equipped with 14 inch wheels
have a 4 inch wheel mounting stud pattern. Vehicles
equipped with 15 inch wheels have a 4 1/2 inch
wheel mounting stud pattern. If a hub and bearing
assembly needs to be replaced, be sure that the
replacement assembly has the same size wheel
mounting stud pattern as the original part.
This unit is serviced only as a complete assembly.
It is mounted to the steering knuckle by four mount-
ing bolts that are removed from the rear of the steer-
ing knuckle.
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