wheel alignment DODGE NEON 1999 Service Repair Manual

SUSPENSION
CONTENTS
page page
FRONT SUSPENSION..................... 10
REAR SUSPENSION...................... 39WHEEL ALIGNMENT....................... 1
WHEEL ALIGNMENT
INDEX
page page
DESCRIPTION AND OPERATION
COMPETITION PACKAGE ALIGNMENT........ 2
WHEEL ALIGNMENT GENERAL
INFORMATION......................... 1
DIAGNOSIS AND TESTING
PRE-ALIGNMENT VEHICLE INSPECTION...... 5
SUSPENSION AND STEERING DIAGNOSIS.... 3SERVICE PROCEDURES
WHEEL ALIGNMENT CHECK AND
ADJUSTMENT PROCEDURE.............. 5
SPECIFICATIONS
VEHICLE ALIGNMENT SPECIFICATIONS AT
CURB HEIGHT......................... 9
DESCRIPTION AND OPERATION
WHEEL ALIGNMENT GENERAL INFORMATION
Proper vehicle wheel alignment is the proper
adjustment of all interrelated front and rear suspen-
sion angles (Fig. 1). These angles are what affects
the handling and steering of the vehicle when it is in
motion.
The method of checking a vehicle's front and rear
wheel alignment will vary depending on the type and
manufacturer of the equipment being used. Instruc-
tions furnished by the manufacturer of the equip-
ment being used should always be followed to ensure
accuracy of the alignment, except alignment specifi-
cations recommended by Chrysler Corporation
MUST ALWAYSbe used.
CAUTION: Do not attempt to modify any suspen-
sion or steering components by heating or bending
of the component.Wheel alignment adjustments should be made in
the following sequence, to ensure that an accurate
alignment is performed.
(1) Rear Wheel Toe Adjustment within specifica-
tions for both total toe and thrust angle.
(2) Front Wheel Toe Adjustment within specifica-
tions for total toe.
(3)To eis measured in degrees or inches and is
the distance that the front edges of the tires are
closer (or farther apart) than the rear edges (Fig. 1).
See Front Wheel Drive Specifications for correct front
and rear wheel Toe specifications.
(4)Thrust Angleis defined as the average of the
Toe settings on each rear wheel. If this measurement
is out of specification, re-adjust rear wheel Toe so
that each wheel has 1/2 of the total Toe measure-
ment. When re-adjusting, do not exceed the total Toe
specification.
PLSUSPENSION 2 - 1

COMPETITION PACKAGE ALIGNMENT
If a vehicle is equipped with the optional competi-
tion package, (S/C ACR) the front wheel camber is
adjustable.
These vehicles come equipped with a special front
strut (Fig. 2). The clevis bracket (Fig. 2) used on this
strut has a slotted hole for the bottom mounting bolt.
Also, the bottom mounting bolt used on this strut has
an eccentric at the head of the bolt (Fig. 2). When the
bolt is rotated, the eccentric pushes against the
flange (Fig. 2) and a raised tab on the clevis bracket.
This forces the steering knuckle to change position
relative to strut, thus changing the camber setting of
the front wheel.
The allowable adjustment range of the front cam-
ber is from ±1.00 degrees to + 0.25 degrees.
NOTE: This vehicle is delivered from the dealer
with the camber set to the preferred specification.
The camber is only to be set to a specification that
is not the preferred camber setting when the vehi-
cle is going to be used in a competitive driving
event. The front camber must always be set back to
the preferred camber specification when the vehicle
is to be driven on the street under normal driving
conditions.
Fig. 1 Alignment Camber/Toe
Fig. 2 Strut To Steering Knuckle Attachment With
Competitive Package.
2 - 2 SUSPENSIONPL
DESCRIPTION AND OPERATION (Continued)

DIAGNOSIS AND TESTING
SUSPENSION AND STEERING DIAGNOSIS
CONDITION POSSIBLE CAUSES POTENTIAL CORRECTIONS
Front End Whine On Turns 1. Defective Wheel Bearing 1. Replace Wheel Bearing
2. Incorrect Wheel Alignment 2. Check And Reset Wheel
Alignment
3. Worn Tires 3. Replace Tires
Front End Growl Or Grinding On
Turns1. Defective Wheel Bearing 1. Replace Wheel Bearing
2. Engine Mount Grounding
Against Frame Or Body Of Vehicle.2. Check For Motor Mount Hitting
Frame Rail And Reposition Engine
As Required
3. Worn Or Broken C/V Joint 3. Replace C/V Joint
4. Loose Wheel Lug Nuts 4. Verify Wheel Lug Nut Torque
5. Incorrect Wheel Alignment 5. Check And Reset Wheel
Alignment
6. Worn Tires 6. Replace Tires
Front End Clunk Or Snap On
Turns1. Loose Wheel Lug Nuts 1. Verify Wheel Lug Nut Torque
2. Worn Or Broken C/V Joint 2. Replace C/V Joint
3. Worn Or Loose Tie Rod Or Ball
Joint3. Tighten Or Replace Tie Rod End
Or Ball Joint
4. Worn Control Arm Bushing 4. Replace Control Arm Bushing
5. Loose Sway Bar Or Upper Strut
Attachment5. Tighten Sway Bar Or Upper Strut
Attachment To Specified Torque
Front End Whine With Vehicle
Going Straight At A Constant
Speed1. Defective Wheel Bearing 1. Replace Wheel Bearing
2. Incorrect Wheel Alignment 2. Check And Reset Wheel
Alignment
3. Worn Tires 3. Replace Tires
Front End Growl Or Grinding With
Vehicle Going Straight At A
Constant Speed1. Engine Mount Grounding 1. Reposition Engine As Required
2. Worn Or Broken C/V Joint 2. Replace C/V Joint
Front End Whine When
Accelerating Or Decelerating1. Worn Or Defective Transaxle
Gears Or Bearings1. Replace Transaxle Gears Or
Bearings
Front End Clunk When
Accelerating Or Decelerating1. Worn Or Broken Engine Mount 1. Replace Engine Mount
2. Worn Or Defective Transaxle
Gears Or Bearings2. Replace Transaxle Gears Or
Bearings
3. Loose Wheel Lug Nuts 3. Verify Wheel Lug Nut Torque
4. Worn Or Broken C/V Joint 4. Replace C/V Joint
5. Worn Or Loose Ball Joint 5. Tighten Or Replace Ball Joint
6. Worn Or Loose Control Arm
Bushing6. Tighten To Specified Torque Or
Replace Control Arm Bushing
7. Loose Crossmember Bolts 7. Tighten Crossmember Bolts To
Specified Torque
PLSUSPENSION 2 - 3

PRE-ALIGNMENT VEHICLE INSPECTION
CAUTION: If the front suspension crossmember
shows any sign of impact damage, the steering col-
umn to steering gear coupling must be inspected.
Refer to Group 19 Steering in this service manual
for the inspection procedure.
Before any attempt is made to change or correct
the wheel alignment factors, the following inspection
and necessary corrections must be made on those
parts which influence the steering of the vehicle.
(1) Be sure the fuel tank is full when the wheel
alignment specifications are checked and or adjusted.
A full tank of fuel weighs approximately 75 pounds,
if the fuel tank is not full this reduction in weight
will affect the curb height of the vehicle and the
alignment specifications.
(2) Alignment specifications of a vehicle can be the
most accurately checked and set when the passenger
compartment and trunk of the vehicle are vacant
with the exception of the spare tire. People, luggage,
and any other appreciable weight will adversely
affect the checking and setting of the camber specifi-
cation.
(3) Check and if required, inflate all of the tires to
the recommended air pressure. All tires must be of
the same size and in good condition and have approx-
imately the same tread wear.Note the type of
tread wear on the tire, this will aid in diagnos-
ing problems. Refer to Group 22 Tires And
Wheels in this service manual for the tire wear
diagnosis.
(4) Check the front tire and wheel assemblies for
radial runout.
(5) Before beginning the alignment process,
inspect all suspension component fasteners for loose-
ness and/or loss of specified torque.
(6) Inspect the lower front ball joints and all steer-
ing linkage for looseness and any signs of wear and
or damage.
(7) Inspect the tie rod ends for looseness and any
signs of wear and or damage.
(8) Inspect the rubber bushings on all suspension
components for signs of wear or deterioration. If any
bushings show signs of wear or deterioration they
should be replaced prior to aligning the vehicle.
SERVICE PROCEDURES
WHEEL ALIGNMENT CHECK AND ADJUSTMENT
PROCEDURE
CASTER CAMBER
Front and rear Caster and Camber settings on this
vehicle are determined at the time the vehicle isdesigned, by the location of the vehicle's suspension
components. This is called a Net Build vehicle and
results in no required adjustment of Caster and
Camber after vehicle is built or when servicing the
suspension components. Thus Caster and Camber are
not normally considered an adjustable specification
when performing an alignment on this vehicle.
Though Caster and Camber are not adjustable they
must be checked to ensure they meet vehicle specifi-
cations.
If front and or rear camber is found not to meet
the vehicle alignment specifications, it can be
adjusted using a Mopar Service Kit developed to
allow for camber adjustment. If a vehicle's front or
rear camber is found to be outside the specifications,
the vehicles suspension components should be
inspected for any signs of damage on bending.This
must be done before using the Mopar Service
Kit for setting camber to meet required specifi-
cation.
If a vehicles caster is not within manufacturers
alignment specifications, check for damaged suspen-
sion components or body parts. This type of damage
can cause component locations to move affecting
vehicle alignment.No adjustment can be made
for the Caster setting on this vehicle.
CAUTION: Do not attempt to adjust the vehicles
Caster or Camber by heating, bending or any other
modification of the suspension components.
(1) Correctly position vehicle on alignment rack
and install all required equipment on vehicle, per the
alignment equipment manufacturers specifications.
(2) Center the steering wheel and lock in place
using a steering wheel clamp.
NOTE: Prior to reading each alignment specifica-
tion, jounce the front and rear of the vehicle an
equal number of times. Induce jounce (rear first
then front) by grasping center of bumper and jounc-
ing each end of vehicle an equal number of times.
Bumper should always be released when vehicle is
at the bottom of the jounce cycle.
(3) Correctly jounce vehicle and read front and
rear alignment settings and compare to vehicle spec-
ifications for Camber, Caster and Toe. See Alignment
Specifications in this group of the service manual for
required specifications.If front and rear camber
readings are within required specifications pro-
ceed to step Step 3 in the Front And Rear Toe
Setting procedure. If Camber readings are not
within specifications refer to step Step 1 in the
following camber adjustment bolt package
installation procedure, for the front and rear
Camber adjustment procedure.
PLSUSPENSION 2 - 5
DIAGNOSIS AND TESTING (Continued)

COMPETITION PACKAGE ALIGNMENT PROCEDURE
If a vehicle is equipped with the optional competi-
tion package, (S/C ACR) the front wheel camber is
adjustable.
These vehicles come equipped with a special front
strut (Fig. 5). The clevis bracket (Fig. 5) used on this
strut has a slotted hole for the bottom mounting bolt.
Also, the bottom mounting bolt used on this strut has
an eccentric at the head of the bolt (Fig. 5). When the
bolt is rotated, the eccentric pushes against the
flange (Fig. 5) and a raised tab on the clevis bracket.
This forces the steering knuckle to change position
relative to strut, thus changing the camber setting of
the front wheel.
The allowable adjustment range of the front cam-
ber is from ±1.00 degrees to + 0.25 degrees.
NOTE: This vehicle is delivered from the dealer
with the camber set to the preferred specification.
The camber is only to be set to a specification that
is not the preferred camber setting when the vehi-
cle is going to be used in a competitive driving
event. The front camber must always be set back to
the preferred camber specification when the vehicle
is to be driven on the street under normal driving
conditions.
Use the following procedure for adjusting the front
camber on a vehicle equipped with the competition
package.(1) Prepare vehicle as described in the Pre-Align-
ment Vehicle Inspection procedure.
(2) Loosen the strut to steering knuckle upper
mounting bolt enough to allow the steering knuckle
to move in the strut.
(3) Loosen the strut to steering knuckle lower
mounting bolt (Fig. 5) enough to allow the bolt to
rotate in the steering knuckle and strut.
(4) Rotate the lower mounting bolt (Fig. 5) until
the desired camber setting is achieved.
(5) When camber is set to the desired specification,
tighten the strut to steering knuckle bolts to a torque
of 53 N´m (40 ft. lbs.) plus an additional 1/4 turn
after required torque is met.
FRONT AND REAR TOE SETTING PROCEDURE
(1) Prepare vehicle as described in the Pre-Align-
ment Vehicle Inspection procedure.
(2) Center steering wheel and lock in place using a
steering wheel clamp.
(3) When performing the Toe setting procedure, set
rear wheel Toe to preferred specification first, then
set front wheel Toe to the preferred specification.
(4) Loosen nuts on attaching bolts, for the left and
right rear lateral links to rear crossmember (Fig. 6).
CAUTION: When adjusting rear toe, the notches on
the lateral link adjustment cams (Fig. 7) are not to
be facing down. The notches in the adjustment
cams are only to be facing up or toward one side.
Fig. 5 Strut To Steering Knuckle Attachment With
Competitive Package.
Fig. 6 Rear Lateral Link To Crossmember Attaching
Bolts
PLSUSPENSION 2 - 7
SERVICE PROCEDURES (Continued)

(5) Rotate lateral link adjustment cams (Fig. 7)
until the preferred rear Toe specification is obtained.
See Alignment Specifications in this group of the ser-
vice manual for preferred specification.
(6) While holding Toe adjustment cams from turn-
ing, tighten left and right lateral links to rear cross-
member attaching bolt nuts. This will securely hold
adjustment cams in position. Then while holding lat-
eral link attaching bolt and adjustment cam from
turning, torque nut of lateral link attaching bolt to
95 N´m (70 ft. lbs.) (Fig. 8).CAUTION: Do not twist front inner tie rod to steer-
ing gear rubber boots during front wheel Toe
adjustment.
(7) Loosen inner to outer tie rod end jam nuts (Fig.
9). Grasp inner tie rods at serrations and rotate tie
rods (Fig. 9) to set the front wheel Toe to the pre-
ferred specification. See Alignment Specifications in
this group of the service manual for preferred speci-
fication.
(8) Tighten tie rod locknuts to 54 N´m (40 ft. lbs.)
torque.
(9) Adjust steering gear to tie rod boots at tie rod.
(10) Remove steering wheel clamp.
Fig. 7 Rear Wheel Toe Adjustment Cams
Fig. 8 Torquing Rear Lateral Link Attaching Bolts
Fig. 9 Front Wheel Toe Adjustment
2 - 8 SUSPENSIONPL
SERVICE PROCEDURES (Continued)

SPECIFICATIONS
VEHICLE ALIGNMENT SPECIFICATIONS AT CURB HEIGHT
FRONT WHEEL ALIGNMENTACCEPTABLE ALIGNMENT
RANGE AT CURB HEIGHT*PREFERRED SETTING
CAMBER...................................... -0.4É to +0.4É +0.0É
**-2.4É to +0.4É (Use On S/C ACR
Only)
TOTAL
TOE.......................................
Specified In Degrees (See Note)0.3Éin to 0.1Éout 0.1É in
** 0.30É In To 0.70É Out (Use On
S/C ACR Only)
CASTER*...................................... +1.8É to +3.8É +2.8É
*Side To Side Caster Difference
Not To
Exceed.........................................1.0É or less 0.0É
REAR WHEEL ALIGNMENT ACCEPTABLE ALIGNMENT
RANGE AT CURB HEIGHT*PREFERRE SETTING
CAMBER....................................... -.75É to +0.25É -0.25É
** -1.00É to + 0.25É (Use On S/C
ACR Only)
TOTAL
TOE......................................
Specified In Degrees (See Note)
TOE OUT: When Backed On
Alignment Rack Is TOE In When
Driving0.3É in to 0.1É out 0.1É in
** 0.30É In To 0.50É Out (Use On
S/C ACR Only)
THRUST
ANGLE................................-0.10É to +0.10É
Note: Total Toe is the arithmetic sum of the left and right wheel Toe settings. Positive is Toe-in, negative is
Toe-out. Total Toe must be equally split between each front wheel to ensure the steering wheel is centered after
setting Toe. Left and Right Toe
must be equal to within 0.02 degrees.
* Setting the vehicles front and/or rear suspension alignment specifications outside of the preferred setting shown
on the chart above will caused rapid and excessive tire wear.
** The alignment specifications shown, are only for vehicles which are equipped with the ACR (Competition
Package) sales code. This specification is listed to show the adjustable range for the Camber and Toe on the front
and rear suspension of a vehicle with the Competition Package. These alignment specifications are only to be
used at the request of the vehicle owner and only when the vehicle is going to be used in a competition event.
The alignment is to be set back to the preferred setting before the vehicle is returned to normal operation.
PLSUSPENSION 2 - 9

(8) Install the disc brake caliper to steering
knuckle attaching bolts (Fig. 17). Tighten the caliper
attaching bolts to a torque of 31 N´m (23 ft. lbs.).
(9) Clean all foreign matter from the threads of
the outer C/V joint stub axle (Fig. 29). Install hub
nut onto threads of stub axle and tighten nut.
(10) With vehicle brakes applied to keep braking
disc from turning, tighten hub nut to a torque of 183
N´m (135 ft. lbs.) (Fig. 30).
(11) Install front wheel and tire assembly. Install
front wheel lug nuts and torque to 135 N´m (100 ft.
lbs.).
(12) Lower vehicle.
(13) Install the spring washer, hub nut lock, and
new cotter pin (Fig. 31). Wrap cotter pin prongs
tightly around the hub nut lock (Fig. 32).
(14) Set front Toe on vehicle to required specifica-
tion. Use procedure listed under Wheel Alignment, in
the Front Suspension Service Procedures section of
this service manual.
LOWER CONTROL ARM
REMOVE
(1)Raise vehicle on jack stands or centered on a frame
contact type hoist. See Hoisting in the Lubrication and
Maintenance section of this manual for the required lifting
procedure to be used. Remove wheel and tire assembly
from side of vehicle requiring service to lower control arm.
(2) Remove the steering knuckle to ball joint ball
stud, clamping nut and bolt (Fig. 33).
Fig. 29 Front Hub To Stub Shaft Nut
Fig. 30 Torquing Front Hub Nut
Fig. 31 Spring Washer, Nut Lock, And New Cotter
Pin
Fig. 32 Cotter Pin Correctly Installed
Fig. 33 Control Arm To Steering Knuckle
Attachment
PLSUSPENSION 2 - 21
REMOVAL AND INSTALLATION (Continued)

(7) Place steering knuckle with wheel bearing
installed, in an arbor press with Receiver, Special
Tool MB-990799 supporting inner race of the wheel
bearing (Fig. 59). Place hub in wheel bearing making
sure it is square with bearing. Press hub into wheel
bearing until it is fully bottomed in the wheel bear-
ing.
(8) Install the steering knuckle, assembly on the
vehicle. Refer to Steering Knuckle in the Removal
And Installation section in this group of the service
manual for the required steering knuckle installation
procedure.
(9) Install the wheel and tire on the vehicle.
(10) Lower the vehicle.
(11) Set the front wheel Toe to the required speci-
fication. Refer to Wheel Alignment Check And
Adjustment Procedure in the Service Procedures Sec-
tion in this group of the service manual.
FRONT WHEEL MOUNTING STUDS
CAUTION: If a wheel attaching stud needs to be
replaced in the front hub/bearing, the stud CAN
NOT be hammered out of the hub flange. If the stud
is removed by hammering it out of the bearing
flange, damage to the hub bearing will occur lead-
ing to premature bearing failure.
The following procedure and special tools shown
MUSTbe used when replacing wheel attaching
studs.
The hub and bearing assembly does not require
removal from the steering knuckle to replace wheel
attaching studs in the hub and bearing assembly.
REMOVE
(1) Raise vehicle on jackstands or centered on a
frame contact type hoist. See Hoisting in the Lubri-
cation and Maintenance section of this manual, forthe required lifting procedure to be used for this
vehicle.
(2) Remove the front wheel and tire.
(3) Remove the 2 bolts (Fig. 60) attaching the disc
brake caliper to the steering knuckle .
(4) Remove the disc brake caliper from the steer-
ing knuckle. Caliper is removed by first lifting bot-
tom of caliper away from steering knuckle, and then
removing top of caliper out from under steering
knuckle (Fig. 61).
(5) Support the disc brake caliper using a wire
hook, (Fig. 62) not by the hydraulic flex hose.
(6) Remove the rotor from the front hub (Fig. 63).
(7) Install a lug nut on the wheel stud being
removed from the hub/bearing, so threads on stud
are even with end of lug nut (Fig. 64). Rotate hub so
stud requiring removal is aligned with notch cast
into front of steering knuckle. Install Remover, Spe-
cial Tool C-4150 on hub/bearing flange and wheel
stud (Fig. 64).
Fig. 59 Pressing Hub Into Wheel Bearing
Fig. 60 Caliper Attaching Bolts
Fig. 61 Brake Caliper Removal
2 - 28 SUSPENSIONPL
REMOVAL AND INSTALLATION (Continued)

REAR SUSPENSION
INDEX
page page
GENERAL INFORMATION
GENERAL INFORMATION................. 39
DESCRIPTION AND OPERATION
COIL SPRING........................... 41
COMPETITION PACKAGE SUSPENSION...... 41
KNUCKLE............................. 41
LATERAL LINKS AND TENSION STRUTS...... 41
REAR SUSPENSION..................... 39
STABILIZER BAR........................ 41
STRUT................................ 41
DIAGNOSIS AND TESTING
KNUCKLE............................. 42
LATERAL LINKS......................... 42
STABILIZER BAR AND BUSHINGS........... 43
STABILIZER BAR ATTACHING LINKS......... 43
STRUT INSPECTION (ON VEHICLE)......... 42
TENSION STRUT........................ 42
SERVICE PROCEDURES
REAR WHEEL ALIGNMENT................ 43REMOVAL AND INSTALLATION
COIL SPRING........................... 44
KNUCKLE............................. 46
LATERAL LINKS......................... 48
STABILIZER BAR........................ 45
STRUT ASSEMBLY...................... 43
DISASSEMBLY AND ASSEMBLY
STABILIZER BAR BUSHINGS............... 53
STRUT ASSEMBLY...................... 50
ADJUSTMENTS
STRUT ADJUSTMENT COMPETITION
PACKAGE SUSPENSION................ 53
SPECIFICATIONS
REAR SUSPENSION FASTENER TORQUE
SPECIFICATIONS...................... 54
SPECIAL TOOLS
REAR SUSPENSION..................... 54
GENERAL INFORMATION
GENERAL INFORMATION
CAUTION: Only frame contact or wheel lift hoisting
equipment can be used on vehicles having a fully
independent rear suspension. Vehicles with inde-
pendent rear suspension can not be hoisted using
equipment designed to lift a vehicle by the rear
axle. If this type of hoisting equipment is used dam-
age to rear suspension components will occur.
NOTE: If a rear suspension component becomes
bent, damaged or fails, no attempt should be made
to straighten or repair it. Always replace with a new
component.
DESCRIPTION AND OPERATION
REAR SUSPENSION
The rear suspension system used on this vehicle is
a fully independent type rear suspension system (Fig.
1).A forged rear knuckle is bolted to each rear strut.
The movement of the rear knuckle is controlled lat-
erally using lateral links going from the front and
rear of the knuckle to the rear crossmember. Fore
and aft movement of the knuckle is controlled by a
tension strut.
The lateral links and tension strut have rubber iso-
lator bushings at each end. The lateral links are
attached to the rear crossmember and knuckle, using
a common bolt and nut assembly at each end. The
tension strut bolts to the bottom of the knuckle and
to a bracket attached to the floor pan of the vehicle.
The lateral links, tension strut and spindle are
normally replaced only when the part has been dam-
aged or when the vehicle has been involved in an
accident. If a suspension part has been damaged, be
sure to check the underbody dimensions of the car. If
the underbody dimensions are not correct, the frame
of the vehicle must be straightened, before replace-
ment suspension components are installed.
PLSUSPENSION 2 - 39