2000 DODGE NEON suspension

Fig. 1 Front Suspension System
2 - 10 SUSPENSIONPL
DESCRIPTION AND OPERATION (Continued)

For more information on the description and oper-
ation of an individual component, refer to the appli-
cable component heading in this section.
STRUT ASSEMBLY (FRONT)
A Macpherson type design strut assembly is used
in place of the front suspension upper control arm
and upper ball joint (Fig. 1). The bottom of the strut
mounts directly to the steering knuckle using 2
attaching bolts and nuts going through the strut cle-
vis bracket and steering knuckle. The top of the strut
mounts directly to the strut tower of the vehicle
using the three threaded studs on the strut assem-
blies upper mount. During steering maneuvers, the
strut assembly (through a pivot bearing in the upper
strut mount) and steering knuckle (through the lower
ball joint) turn as an assembly. The strut assembly is
used to dampen the front suspension and smooth the
ride of the vehicle.
The strut assembly includes the following compo-
nents: A rubber isolated upper mount, an upper
spring seat and bearing, a dust shield, a jounce
bumper, a coil spring, a lower spring isolator and a
strut (Fig. 1). Each component is serviced by remov-
ing the strut assembly from the vehicle and disas-
sembling it.
COIL SPRING
The strut and front suspension of the vehicle is
supported by coil springs positioned around the
upper half of each strut. The springs are contained
between the upper and the lower seats of the strut
assembly.
Coil springs are rated separately for each corner or
side of the vehicle depending on optional equipment
and type of vehicle service. During service procedures
of the strut assembly, if both springs are removed,
mark the springs to ensure installation in its original
position.
NOTE: If a coil spring requires replacement, be
sure that it is replaced with a spring meeting the
correct load rating for the vehicle and its specific
options.
STEERING KNUCKLE
The steering knuckle is a single casting with legs
machined for attachment to the front strut assembly
on the top and the lower control arm ball joint on the
bottom (Fig. 1). The steering knuckle also has
machined abutments on the casting to support and
align the front brake caliper assembly.
WHEEL BEARING AND HUB
The knuckle also supports the wheel bearing and
hub (Fig. 1). The wheel hub is pressed into a sealed
for life wheel bearing that is pressed into the steer-
ing knuckle. A retainer plate also holds it in place.
The hub supports the driveshaft outer constant veloc-
ity (C/V) joint. Each is splined and meshes in the
center of the hub. The outer C/V joint is retained to
the hub using a nut. The nut is held on the outer C/V
stub shaft using a nut retainer and cotter pin.
The wheel bearing is a Unit 1 type cartridge bear-
ing that requires no maintenance. The wheel bearing
is serviced separately from the hub.
LOWER CONTROL ARM
There is one lower control arm on each side of the
vehicle. Each lower control arm is a stamped steel
unit using rubber isolated pivot bushings to isolate it
from the front suspension crossmember and frame of
the vehicle (Fig. 1). The rear bushing can be serviced
separately.
The front of the lower control arm is bolted to the
front crossmember using a bolt through the center of
the rubber pivot bushing. The rear of the lower con-
trol arm is mounted to both the front crossmember
and the frame rail of the vehicle using a thru-bolt.
The thru-bolt goes through both the crossmember
and rear lower control arm bushing, threading
directly into the frame rail of the vehicle.
The left and right lower control arms are intercon-
nected through a linked rubber isolated stabilizer
bar.
The outboard end of each lower control arm con-
nects to the steering knuckle using a ball joint.
1 ± VEHICLE STRUT TOWER
2 ± OUTER TIE ROD
3 ± STEERING GEAR
4 ± STRUT ASSEMBLY
5 ± JAM NUT
6 ± LOWER CONTROL ARM
7 ± CROSSMEMBER
8 ± BALL JOINT
9 ± STABILIZER BAR
10 ± STABILIZER BAR CUSHION AND RETAINER11 ± STABILIZER BAR LINK
12 ± HUB
13 ± KNUCKLE
14 ± STRUT
15 ± LOWER SPRING ISOLATOR
16 ± COIL SPRING
17 ± JOUNCE BUMPER
18 ± DUST SHIELD
19 ± SPRING SEAT AND BEARING
20 ± UPPER MOUNT
PLSUSPENSION 2 - 11
DESCRIPTION AND OPERATION (Continued)

BALL JOINT
The lower control arm connects to the steering
knuckle through a ball joint mounted at the outboard
end of the arm (Fig. 1). The ball joint is pressed into
the lower control arm and has a non-tapered stud
with a notch for steering knuckle pinch bolt clear-
ance. The ball joint stud is clamped and locked to the
steering knuckle lower leg using a pinch bolt.
The ball joint is lubricated for life during the man-
ufacturing process. Once lubricated for life, the
grease fitting head is snapped off by the manufac-
turer. This is done to eliminate the possibility of
lubrication later in the ball joints life thus damaging
the non-vented ball joint seal boot.
The ball joint used on this vehicle is replaceable
and, if found defective, can be serviced as a separate
component of the lower control arm.
STABILIZER BAR (FRONT)
The stabilizer bar helps control vehicle body roll.
Jounce and rebound movements affecting one wheel
are partially transmitted to the opposite wheel of the
vehicle to stabilize body roll.
The stabilizer bar interconnects both front lower
control arms of the vehicle and is attached to the
front suspension crossmember (Fig. 1).
Attachment of the stabilizer bar to the front sus-
pension crossmember is through 2 rubber-isolator
cushion and retainers (Fig. 1). The stabilizer bar
attachment to the lower control arm is done by uti-
lizing an isolated stabilizer bar link at each arm. All
components of the stabilizer bar are serviceable.
DIAGNOSIS AND TESTING
STRUT ASSEMBLY (FRONT)
Inspect the strut assembly for the following condi-
tions (Fig. 3):
²Inspect for a damaged or broken coil spring.
²Inspect for a torn or damaged strut assembly
dust shield.²Lift the dust shield and inspect the strut assem-
bly for evidence of fluid running from the upper end
of the strut fluid reservoir. (Actual leakage will be a
stream of fluid running down the side and dripping
off lower end of unit.) A slight amount of seepage
between the strut shaft and strut shaft seal is not
unusual and does not affect performance of the strut
assembly.
²Lift the dust shield and inspect the jounce
bumper for signs of damage or deterioration.
²Inspect the clearance between the shock tower
and the coil spring. Make sure no fasteners are pro-
truding through the shock tower possibly contacting
the coil spring and strut. Because of the minimum
clearance in this area (Fig. 2), installation of metal
fasteners could damage the coil spring coating and
lead to a corrosion failure of the spring.
CAUTION: At no time when servicing a vehicle can
a sheet metal screw, bolt or other metal fastener be
installed into the shock tower to take the place of
an original plastic clip. Also, do not drill holes into
the front shock tower for the installation of any
metal fasteners into the shock tower area indicated
(Fig. 2).
Fig. 2 Shock Tower Area (Typical)
1 ± SHOCK TOWER
2 ± COIL SPRING
3 ± NO SHEET METAL SCREWS, BOLTS, OR ANY OTHER
METAL FASTENERS ARE TO BE INSTALLED INTO SHOCK
TOWER IN THIS AREA. ALSO, NO HOLES ARE TO BE
DRILLED INTO SHOCK TOWER IN THIS SAME AREA.
2 - 12 SUSPENSIONPL
DESCRIPTION AND OPERATION (Continued)

STEERING KNUCKLE
The front suspension steering knuckle is not a
repairable component of the front suspension. It
must be replaced if found to be damaged in any way.
If it is determined that the steering knuckle is bent
when servicing the vehicle, no attempt is to be made
to straighten the steering knuckle.
WHEEL BEARING AND HUB
The wheel bearing is designed for the life of the
vehicle and requires no type of periodic maintenance.
The following procedure may be used for diagnosing
the condition of the wheel bearing and hub.
With the wheel, disc brake caliper, and brake rotor
removed, rotate the wheel hub. Any roughness or
resistance to rotation may indicate dirt intrusion or a
failed hub bearing. If the bearing exhibits any of
these conditions during diagnosis, the hub bearing
will require replacement. The bearing is not service-
able.Damaged bearing seals and the resulting excessive
grease loss may also require bearing replacement.
Moderate grease weapage from the bearing is consid-
ered normal and should not require replacement of
the wheel bearing.
To diagnose a bent hub, refer to BRAKE ROTOR in
the DIAGNOSIS AND TESTING section in the
BRAKES service manual group for the procedure on
measuring hub runout.
LOWER CONTROL ARM
Inspect the lower control arm for signs of damage
from contact with the ground or road debris. If the
lower control arm shows any sign of damage, look for
distortion. Do not attempt to repair or straighten a
broken or bent lower control arm. If damaged, the
lower control arm stamping is serviced only as a
complete component.
The serviceable components of the lower control
arm are: the ball joint, the ball joint grease seal and
the lower control arm rear isolator bushing.
Inspect both lower control arm isolator bushings
for severe deterioration and replace as required.
Inspect the ball joint per the inspection procedure in
this section of the service manual and replace as
required. Refer to BALL JOINT in this section of this
service manual group.
BALL JOINT
With the weight of the vehicle resting on the road
wheels, grasp the headless grease fitting as shown
(Fig. 4). With no mechanical assistance or added
force, attempt to move the grease fitting. If the ball
joint is worn, the grease fitting will move. If move-
ment is noted, replace the ball joint.
Fig. 3 Strut Assembly
1 ± NUT
2 ± STRUT ASSEMBLY
3 ± STRUT
4 ± LOWER SPRING ISOLATOR
5 ± COIL SPRING
6 ± JOUNCE BUMPER
7 ± DUST SHIELD
8 ± SPRING SEAT AND BEARING (WITH SPRING ISOLATOR)
9 ± UPPER MOUNT
Fig. 4 Checking Ball Joint Wear
1 ± BALL JOINT
2 ± HEADLESS GREASE FITTING
PLSUSPENSION 2 - 13
DIAGNOSIS AND TESTING (Continued)

CAUTION: No attempt should be made to service
the headless grease fitting on the ball joint. It has
been purposely snapped off by the manufacturer to
avoid over-greasing.
STABILIZER BAR (FRONT)
Inspect for broken, cracked or distorted stabilizer
bar cushions and retainers. Inspect for worn or dam-
aged stabilizer bar links (Fig. 1).
SERVICE PROCEDURES
LUBRICATION
There are no serviceable lubrication points on the
front suspension. The front lower ball joints have
grease fittings which have had the head snapped off
by the manufacturer after they have been filled. This
has been done to eliminate the possibility of damag-
ing the non-vented seals. Grease will not leak from
the broken grease fittings. The ball joints are sealed
for life and require no maintenance.
CAUTION: No attempt should be made to replace
the ball joint grease fitting with a new fitting, then
filling the ball joint with grease. Damage to the
grease seal can result.
REMOVAL AND INSTALLATION
SERVICE WARNINGS AND CAUTIONS
WARNING: DO NOT REMOVE THE STRUT SHAFT
NUT WHILE STRUT ASSEMBLY IS INSTALLED IN
VEHICLE, OR BEFORE THE COIL SPRING IS COM-
PRESSED WITH A COMPRESSION TOOL. THE
SPRING IS HELD UNDER HIGH PRESSURE.
CAUTION: Only frame contact hoisting equipment
can be used on this vehicle. All vehicles have a
fully independent rear suspension. The vehicles
cannot be hoisted using equipment designed to lift
a vehicle by the rear axle. If this type of hoisting
equipment is used, damage to rear suspension
components will occur.
CAUTION: At no time when servicing a vehicle can
a sheet metal screw, bolt, or other metal fastener be
installed in the shock tower to take the place of an
original plastic clip. It may come into contact with
the strut or coil spring.CAUTION: Wheel bearing damage will result if after
loosening the hub nut, the vehicle is rolled on the
ground or the weight of the vehicle is allowed to be
supported by the tires for a length of time.
STRUT ASSEMBLY (FRONT)
NOTE: Before proceeding with this procedure,
review SERVICE WARNINGS AND CAUTIONS at the
beginning of REMOVAL AND INSTALLATION in this
section.
REMOVAL
(1) Raise the vehicle. Refer to HOISTING in the
LUBRICATION AND MAINTENANCE group for the
proper lifting procedure.
(2) Remove tire and wheel assembly from location
on front of vehicle requiring strut removal.
(3) If both strut assemblies are to be removed,
mark the strut assemblies right or left according to
which side of the vehicle they were removed from.
(4) Remove the screw securing the ground strap to
the rear of the strut (Fig. 5).
(5) If the vehicle is equipped with Antilock brakes
(ABS), remove the screw securing the ABS wheel
speed sensor to the rear of the strut (Fig. 5).
CAUTION: The strut assembly-to-steering knuckle
attaching bolts are serrated and must not be turned
during removal. Hold the bolts stationary in the
steering knuckle while removing the nuts, then tap
the bolts out using a pin punch.
Fig. 5 Ground Strap And ABS Sensor Bracket
1 ± ABS WHEEL SPEED SENSOR ROUTING BRACKET (IF
EQUIPPED)
2 ± GROUND STRAP
3 ± GROUND STRAP SCREW
4 ± ABS SENSOR BRACKET SCREW (IF EQUIPPED)
2 - 14 SUSPENSIONPL
DIAGNOSIS AND TESTING (Continued)

(6) Remove the two bolts attaching the strut to the
steering knuckle (Fig. 1).
(7) Lower the vehicle just enough to open the
hood, but without letting the tires touch the floor.
(8) Remove the three nuts attaching the upper
mount of the strut assembly to the vehicle's strut
tower (Fig. 6).
(9) Remove the strut assembly from the vehicle.
(10) For disassembly and assembly procedures,
refer to STRUT ASSEMBLY in the DISASSEMBLY
AND ASSEMBLY section in this section of this ser-
vice manual group.
INSTALLATION
(1) Install the strut assembly into the strut tower,
aligning the three studs on the strut upper mount
with the holes in strut tower. Install the three
mounting nuts on the studs (Fig. 6). Tighten the
three nuts to a torque of 34 N´m (300 in. lbs.).
(2) Close the hood of the vehicle.
CAUTION: The strut assembly-to-steering knuckle
attaching bolts are serrated and must not be turned
during installation. Install the nuts while holding the
bolts stationary in the steering knuckle.
(3) Position the lower end of the strut assembly in
line with the upper end of the steering knuckle and
align the mounting holes (Fig. 1). Install the two
attaching bolts. The bolts should be installed with so
that the nuts face towards the front of the vehicle
once installed. Install the nuts. Holding the bolts in
place tighten the nuts to a torque of 53 N´m (40 ft.
lbs.) plus an additional 90É turn after the specified
torque is met.(4) If the vehicle is equipped with Antilock brakes
(ABS), attach the ABS wheel speed sensor to the rear
of the strut (rearward ear) using its mounting screw
(Fig. 5). Tighten the mounting screw to a torque of
13 N´m (120 in. lbs.).
(5) Attach the ground strap to the rear of the strut
(forward ear) using its mounting screw (Fig. 5).
Tighten the mounting screw to a torque of 13 N´m
(120 in. lbs.).
(6) Install the tire and wheel assembly. Install and
tighten the wheel mounting nuts in proper sequence
until all nuts are torqued to half specification. Next,
repeat the tightening sequence to the full specified
torque of 135 N´m (100 ft. lbs.).
(7) Lower the vehicle.
STEERING KNUCKLE
NOTE: Before proceeding with this procedure,
review SERVICE WARNINGS AND CAUTIONS at the
beginning of REMOVAL AND INSTALLATION in this
section.
REMOVAL
(1) Apply the brakes and hold in place.
(2) Raise the vehicle. Refer to HOISTING in the
LUBRICATION AND MAINTENANCE group for the
proper lifting procedure.
(3) Remove the front tire and wheel assembly.
(4) While the brakes are applied, loosen and
remove the hub nut on the end of the driveshaft (Fig.
7).
(5) Release the brakes.
Fig. 6 Upper Mounting Nuts
1 ± STRUT TOWER
2 ± MOUNTING NUTS
Fig. 7 Hub Nut
1 ± DRIVESHAFT
2 ± HUB
3 ± HUB NUT
PLSUSPENSION 2 - 15
REMOVAL AND INSTALLATION (Continued)

(6) Remove the two guide pin bolts securing the
front disc brake caliper to the steering knuckle (Fig.
8).
(7) Remove the disc brake caliper from the steer-
ing knuckle. The caliper is removed by first tipping
either the top (right side) or bottom (left side) of the
caliper away from the brake rotor, then pulling the
caliper off the opposite end's caliper slide (on the
knuckle) and rotor.
(8) Hang the caliper out of the way using a wire
hanger or cord. Do not support the caliper by letting
it hang by the hydraulic hose.
(9) Remove any retainer clips from the wheel
mounting studs. Remove the brake rotor from the
front hub (Fig. 8).
(10) Remove the nut attaching the outer tie rod to
the steering knuckle. To do this, hold the tie rod end
stud with a wrench while loosening and removing the
nut with a standard wrench or crowfoot wrench (Fig.
9).
(11) Remove the tie rod end from the steering
knuckle using Remover, Special Tool MB991113 (Fig.
10).
Fig. 8 Brake Caliper And Rotor
1 ± RETAINER CLIP
2 ± BRAKE ROTOR
3 ± HUB
4 ± GUIDE PIN BOLTS
5 ± DISC BRAKE CALIPER
Fig. 9 Tie Rod Nut Removal/Installation
1 ± OUTER TIE ROD
2 ± STUD
3 ± NUT
Fig. 10 Tie Rod Removal
1 ± OUTER TIE ROD
2 ± STEERING KNUCKLE
2 - 16 SUSPENSIONPL
REMOVAL AND INSTALLATION (Continued)

(12) Remove the tie rod heat shield.
(13) Remove the nut and pinch bolt clamping the
ball joint stud to the steering knuckle (Fig. 11).
CAUTION: The strut assembly-to-steering knuckle
attaching bolts are serrated and must not be turned
during removal. Hold the bolts stationary in the
steering knuckles while removing the nuts, then tap
the bolts out using a pin punch.
(14) Remove the two bolts attaching the strut to
the steering knuckle (Fig. 1).
NOTE: Use caution when separating the ball joint
stud from the steering knuckle, so the ball joint seal
does not get cut.
(15) Separate the ball joint stud from the steering
knuckle by prying down on lower control arm and up
against the ball joint boss on the steering knuckle
(Fig. 12).
NOTE: Do not allow the driveshaft to hang by the
inner C/V joint; it must be supported to keep the
joint from separating during this operation.
(16) Pull the steering knuckle off the driveshaft
outer C/V joint splines and remove the steering
knuckle.
NOTE: The cartridge type front wheel bearing used
on this vehicle is not transferable to the replace-
ment steering knuckle. If the replacement steering
knuckle does not come with a wheel bearing, a new
bearing must be installed in the steering knuckle.
Installation of the new wheel bearing and hub mustbe done before installing the steering knuckle on
the vehicle.
(17) If the steering knuckle is to be replaced, refer
to STEERING KNUCKLE in the DISASSEMBLY
AND ASSEMBLY section in this section of this ser-
vice manual group for the wheel bearing and hub
removal and installation procedure. Do not reuse the
wheel bearing
INSTALLATION
(1) If the steering knuckle has been replaced, refer
to STEERING KNUCKLE in DISASSEMBLY AND
ASSEMBLY found in this section of this service man-
ual group for the wheel bearing and hub installation
procedure. Do not reuse the old wheel bearing.
(2) Slide the hub of the steering knuckle onto the
splines on the driveshaft C/V joint.
(3) Install the steering knuckle onto the ball joint
stud aligning the bolt hole in the knuckle boss with
the notch formed in the side of the ball joint stud.
(4) Install a new ball joint stud pinch bolt and nut
(Fig. 11). Tighten the nut to a torque of 95 N´m (70
ft. lbs.).
CAUTION: The strut assembly-to-steering knuckle
attaching bolts are serrated and must not be turned
during installation. Install the nuts while holding the
bolts stationary in the steering knuckle.
(5) Position the lower end of the strut assembly in
line with the upper end of the steering knuckle and
align the mounting holes (Fig. 1). Install the two
attaching bolts. The bolts should be installed with so
that the nuts face towards the front of the vehicle
Fig. 11 Ball Joint Bolt And Nut
1 ± NUT
2 ± BOLT
3 ± BALL JOINT
Fig. 12 Separate Ball Joint from Knuckle
1 ± STEERING KNUCKLE
2±PRYBAR
3 ± LOWER CONTROL ARM
4 ± BALL JOINT STUD
PLSUSPENSION 2 - 17
REMOVAL AND INSTALLATION (Continued)