4791241 93ZJ Secc 22 Wheels and Tires

8/14/2019 4791241 93ZJ Secc 22 Wheels and Tires

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WHEELS AND TIRES

C O N T E N T S

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SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . 12

TIRES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

VEHICLE VIBRATION . . . . . . . . . . . . . . . . . . . . 10

WHEELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

T I R E S

INDEX

page page

Cleaning of Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 2General Information . . . . . . . . . . . . . . . . . . . . . . . . 1Pressure Gauges . . . . . . . . . . . . . . . . . . . . . . . . . . 2Repairing Leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Replacement Tires . . . . . . . . . . . . . . . . . . . . . . . . . 2

Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Tire Inflation Pressures . . . . . . . . . . . . . . . . . . . . . 2Tire Noise or Vibration . . . . . . . . . . . . . . . . . . . . . . 4Tire Wear Patterns . . . . . . . . . . . . . . . . . . . . . . . . . 4Tread Wear Indicators . . . . . . . . . . . . . . . . . . . . . . 3

GENERAL INFORMATIONTires are designed for each specific vehicle. They

provide t he best overall performan ce for normal op-

eration. The ride and handling characteristics match

th e vehicles r equirement s. With proper care they will

give excellent reliability, t ra ction, skid resistan ce, a nd

tread life. These tires have specific load carrying ca-

pacities. When correctly inflated, they will operateproperly.

Tires used in cool climat es, an d with light loads will

have a longer life than tires used in hot climates with

heavy loads. Abrasive road surfaces will accelerate

tire wear.

Driving habits have more effect on tire life than any

other factor. Careful drivers will obtain much greater

mileage than careless drivers.

Driving habits t hat shorten th e l ife of any t ire;

Rapid a cceleration a nd deceleration

Severe a pplication of brakes

High-speed driving

Taking turns at excessive speeds

Striking curbs and other obstacles

It is very important to follow the tire rotation inter-

va l

IDENTIFICATION

T ir e t y p e, s iz e, a s p ect r a t i o a n d s p ee d r a t i n g a r e

encoded in the letters and numbers imprinted on the

side wall of the tire. Refer to the chart to decipher the

tire identification code (Fig. 1).

P e r for m a n c e t i r e s w il l h a v e a s p ee d r a t i n g l et t e r

after the aspect ratio number. The speed ra ting is not

a lw a ys p r in t e d on t h e t ir e s id ew a ll. T h e le t t er S

indicates that the t ire is speed rated up to 112 mph.

Q up to 100 mph

T up to 118 mph

U up to 124 mph

H up to 130 mph

V up to 149 mph

Z m o r e t h a n 1 4 9 m p h ( c o n s u l t t h e t i r e m a n u f a c -

turer for the specific speed rating)

An All Season type t ire will have either M + S, M &

S o r M S (indicating mud and snow tra ction) im-

printed on th e side wall.

RADIAL-PLY TIRES

Radial-ply t ires improve han dling, tread l ife, r ide

quality and decrease rolling resistance.

Radial-ply tires must always be used in sets of four.

U n d e r n o c i r c u m s t a n c e s s h o u l d t h e y b e u s e d o n t h e

front only. They may be mixed with temporary spare

tires when necessary, but reduced speeds are recom-mended.

Radial-ply tires have the same load-carrying capac-

ity as other types of t ires of the same size. They use

the same recommended inflation pressures.

SPARE T IRE (TEMPORARY)

The compact spare t ire is designed for emergency

u s e on l y. T h e or i gi n a l t i r e s h ou l d b e r e p a ir e d a n d

reinsta lled a t the first opportu nity. Refer to Owners

Manual for complete details.

Z WHEELS AND TIRES 22 - 1


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TIRE CHAINS

T ir e s n ow ch a i n s m a y b e u s e d o n ce r t a in m od e ls .

Refer to Owner s Manu al for more informa tion.

CLEANING OF TIRESSteam cleaning may be used for cleaning.

DO NOT use gasoline or wire brush for cleaning.

DO NOT use mineral oil or an oil-based solvent.

PRESSURE GAUGESHigh-quality, dial-type, air-pressure gauges are rec-

ommended. After checking with the gauge, replace

valve caps and tighten finger tight.

TIRE INFLATION PRESSURESUnder inflation (Fig. 2) causes rapid shoulder wear

and tire flexing.

Over inflation (Fig. 3) causes rapid center wear andloss of the t ires a bility t o cush ion s hocks.

Improper inflation can cause;

Uneven wear patterns

Reduced trea d life

Reduced fuel economy

Unsatisfactory ride

Cause the vehicle to drift

R efe r t o t h e O wn e r s M a n u a l for i n for m a t i on r e -

garding proper tire inflation pressure.

This pressure has been carefully selected to provide

for safe vehicle operation. Tire pressure should be

checked c o l d once per month. Tire pressure decreases

when the outside temperature drops.

I n fl a t ion p r e ss u r e s s p eci fi ed on t h e p la ca r d s a r e

always c o l d i nf l a t i o n pr e s s ur e . Cold inflation pres-

sure is obtained after the vehicle has not been oper-

ated for at least 3 h ours. Tire inflation pressures may

i n cr e a s e f r om 2 t o 6 p ou n d s p e r s q u a r e i n ch (p s i)

during operation. D o n o t reduce this n ormal pressure

build-up.

Vehicles loaded to the maximum capacity should

not be driven at continuous speeds above 75 mph (120

km/h).

WARNING: OVER OR UNDER INFLATED TIRES CAN

AFFECT VEHICLE HANDLING AND CAN FAIL SUD-

DENLY, RESULTING IN LOSS OF VEHICLE CON-

TROL.

REPLACEMENT TIRESO E M t i r es p r ov id e a p r op e r b a la n ce of m a n y fe a -

tures such as;

Ride

Fig. 1 Tire Size Identification

Fig. 2 Under Inflation Wear

Fig. 3 Over Inflation Wear

22 - 2 WHEELS AND TIRES Z


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Noise

Handling

Durability

Tread life

Traction

Rolling resistan ce

Speed capability

We recommend that t ires equivalent to the originalequipment t ires be used when r eplacement is needed.

R efe r t o t he p la ca rd o n t he v e hi cle o r t he

Ow n e r s Ma n u a l fo r t h e c o rr e c t r e p la c e m e n t

t i r e .

Failure t o use original equipment replacement t ires

may adversely affect the handling of the vehicle.

T h e u s e of ov er s iz e t i r es i s n o t r e c o mm e n d e d .

They may cause interference with vehicle suspension

a n d s t e er i n g t r a v e l. T h is ca n ca u s e t i r e d a m a g e or

failure.

WARNING: FAILURE TO EQUIP THE VEHICLE WITH

TIRES HAVING ADEQUATE LOAD CAPABILITY CANRESULT IN SUDDEN TIRE FAILURE.

ROTATIONTires on the front and rear axles operate at differ-

ent loads and perform different steering, driving, and

braking functions. For these reasons;

T h ey w e a r a t u n e q u a l r a t e s

Tend to develop irregular wear patterns

These effects can be r educed by t imely rotation of

t ires. The benefits of r otation are especially worth-

while. Rotation will:

Increase tread life Help to maintain mud, snow, and wet traction lev-

els

Contr ibute to a smooth, quiet r ide

The suggested method of t ire rotation is the s a m e

s i d e f r o n t t o r e a r pattern (Fig. 4). Oth er rotation

methods can be used, but they will not provide all the

tire longevity benefits.

TREAD WEAR INDICATORSTread wear indicators are molded into the bottom of

the tread grooves. When tread is 1.6 mm (1/16 in.),

the tread wear indicators will appear as a 13 mm (1/2

in.) band.

Tire replacement is n ecessary when indicators ap-

pear in two or more grooves, or if localized balding

occurs (Fig. 5).

REPAIRING LEAKSFor proper repairing, a radial t ire must be removed

f r o m t h e w h e e l . R e p a i r s s h o u l d o n l y b e m a d e i f t h ep u n c t u r e i s i n t h e t r e a d a r e a (Fig. 6). If outside the

tread area the t ire should be replaced.

Fig. 4 Tire Rotation Pattern

Fig. 5 Tread Wear Indicators

Fig. 6 Tire Repair Area



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Deflate tire completely before dismount ing t ire from

the wheel. Use lubrication such as a mild soap solu-

t i on w h e n d is m ou n t i n g or m ou n t i n g t i r e. U s e t ool s

free of burrs or sharp edges.

Before mounting t ire on wheel, make sure all rust

s ca le is r e m ove d fr om t h e r im . R ep a in t or s ea l if

necessary.

TIRE NOISE OR VIBRATIONThe radial-ply tire on your vehicle is more sensitive

to improper mounting, or imbalance.

To d e t er m i n e i f t i r es a r e t h e ca u s e of v i br a t i on ,

d r iv e t h e v eh i cl e o ve r a s m oot h r oa d a t d iffe r en t

speeds. Note the effect of acceleration a nd decelera -

tion on n oise level. Different ial a nd exhaust noise will

chan ge in intensity as speed varies. Tire noise will

u su a lly r em a in con st a n t .

TIRE WEAR PATTERNSUnder inflation results in faster wear on shoulders

of t ire. Over inflation causes faster wear at center of

t r e a d .Excessive camber causes the t ire to run at an angle

t o t h e r o a d . O n e s i d e o f t r e a d i s w o r n m o r e t h a n t h e

other.

Excessive toe-in or toe-out causes wear on the tread

e d ge s of t h e t i r e, fr om d r a g gi n g o f t i r e. T h e r e i s a

feathered effect across the tread (Fig. 7).

Fig. 7 Abnormal Tire Tread Wear Patterns



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LEAD CORRECTION CHART



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WHEELS

GENERAL INFORMATIONO r ig in a l e qu i pm e n t w h e el s a r e d e si gn e d for a l l

loads up to the specified Maximum Vehicle Capacity.

All models use steel or cast aluminum drop center

wheels. The safety rim wheel (Fig. 1) has raised sec-

tions between th e rim flanges an d th e rim well .

I n it i a l i n fl a t ion of t h e t i r e for ce s t h e b ea d ov er

these raised sections. In case of tire failure, the raised

sections hold the t ire in position on the wheel until

the vehicle can be brought to a safe stop.

C a st a lu m in u m w h ee ls r e qu ir e s pe cia l b a la n ce

weights a nd alignment equipment.

WHEEL INSTALLATIONThe wheel studs and nuts are designed for specific

applications. They m ust be replaced with equivalent

parts. Do not use replacement parts of lesser quality

or a substitute design. All aluminum and some steel

w h ee ls h a ve w h ee l s t u d n u t s w h ich fe a t u r e a n e n -

larged nose. This enlarged nose is necessary to ensure

proper retention of the aluminum wheels.

Before installing the wheel, be sure to remove any

build up of corrosion on the wheel mounting surfaces.

Ensure wheels are installed with good metal-to-metal

conta ct. Improper insta llat ion could cau se loosening

of wheel nuts. This could affect the safety and han-

dling of your vehicle.

To install the wheel, first position it properly on the

m ou n t in g s u r fa ce . A ll w h ee l n u t s s h ou l d t h e n b e

t i gh t e n e d j u s t s n u g . G r a d u a l ly t i gh t e n t h e m i n s e -

quence to 129 Nm (95 ft. lbs.) torque (Fig. 2). N e v e r

u s e o i l o r g r e a s e o n s t u d s o r n u t s .

WHEEL REPLACEMENTWheels must be replaced if they have:

Excessive run out

Bent or dented

Leak air through welds

Have damaged bolt holes

Wheel repairs employing hamm ering, heating, or

welding are not allowed.

O r ig in a l e qu i pm e n t w h e el s a r e a v a il a bl e t h r o u gh

y ou r d e a le r. R ep la ce m en t w h e el s fr om a n y ot h e r

source should be equivalent in:

Load carrying capacity

Diameter

Width

Offset

Mounting configuration

Failure to use equivalent replacement wheels may

a ffe ct t h e s a fe t y a n d h a n d l in g of y ou r v eh i cl e. R e-placement with u s e d wheels is not recommended.

Their service history may have included severe treat-

m e n t .

R e fe r t o t h e S p e c i f ic a t i o n s C h a r t f o r i n f o rm a -

t i o n r e g a r d i n g a b o v e r e q u i r e m e n t s .

WHEEL ORNAMENTATION

WARNING: HANDLE ALL WHEEL ORNAMENTATION

WITH EXTREME CARE DURING REMOVAL AND IN-

STALLATION. SHARP EDGES ON THE COVERS OR

CAPS CAN CAUSE PERSONAL INJURY.

TIRE AND WHEEL BALANCEI t i s r e c o m m e n d e d t h a t a t w o p l a n e d y n a m i c b a l -

a n ce r b e u s e d w h e n a w h ee l a n d t ir e a s se m bly r e -

q u ir e b a la n c in g . S t a t i c s h o u ld b e u s e d o n ly w h e n a

two plane balancer is not available.

For static imbalance, find location of h eavy spot

causing imbalance. Counter balance wheel directly

opposite t he heavy spot. Determine weight required

to counterbalance the area of imbalance. Place half of

t h i s w e ig h t on t h e i n n e r r i m f la n g e a n d t h e ot h e r

Fig. 1 Wheel Safety Rim

Fig. 2 Lug Nut Tightening Pattern



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h a lf o n t h e o u t e r rim flange (Fig. 3, Fig. 4). Off-

vehicle balancing is necessary.

Wheel balancing can be accomplished with either

on or off vehicle equipment. When using on-vehicle

balancing equipment, follow these precautions:

Limited-slip rear axle different ial, remove the op-

posite wheel/tire

B efor e b a la n c in g t h e w h e el s/t i r es on a v eh i cl e

equipped with a tran sfer case, disconnect t he drive

shafts

MATCH MOUNTINGWheels and t ires are match mounted at the factory.

T h is m e a n s t h a t t h e h i gh s p ot of t h e t i r e i s m a t ch e d

t o t h e l o w s p o t o n t h e w h e e l r i m . T h i s t e c h n i q u e i s

u s e d t o r e d u ce r u n - ou t i n t h e w h ee l/t i r e a s s em b ly.

T h e h i gh s pot on t h e t i r e i s m a r k ed w it h a p a in t

mark or a bright colored adhesive label on th e out-

b oa r d s id ew a ll. T h e l ow s p ot on t h e r im is a t t h e

valve stem location on the wheel rim.

Before dismounting a t ire from its wheel, a refer-

e n c e m a r k s h o u l d b e p l a c e d o n t h e t i r e a t t h e v a l v e

s t e m l oca t i on . T h is r e fe r en ce w il l a s s u r e t h a t i t i s

remounted in the original position on the wheel.

(1) Measure the total indicator runout on the cen-

ter of the t ire tr ead r ib. Record the indicator r eading.

Fig. 3 Static Unbalance & Balance

Fig. 4 Dynamic Unbalance & Balance



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Mark the t ire to indicate the high spot. Place a mark

on the tire at the valve stem location (Fig. 5).

(2) Break down t he t ire and remount i t 180 degrees

on the rim (Fig. 6).

(3) Measure the total indicator runout again. Mark

the t ire to indicate t he h igh spot.

(4) If ru nout is st ill excessive, th e following pr oce-

dures must be done.

If the high spot is within 101.6 mm (4.0 in.) of the

first spot and is still excessive, replace the tire.

If the high spot is within 101.6 mm (4.0 in.) of the

fir s t s pot on t h e w h ee l, t h e w h ee l m a y b e o u t of

specifications. Refer to Wheel a nd Tire Runout.

If the h igh spot is NOT within 101.6 mm (4.0 in.) of

e it h e r h i gh s p ot , d r a w a n a r r o w on t h e t r e a d f r om

s econ d h i gh s p ot t o f ir s t . B r e a k d ow n t h e t i r e a n d

r e m ou n t i t 9 0 d e gr e es on t h e r i m i n t h a t d ir e ct i on

(F i g. 7 ). T h is p r oce d u r e w il l n or m a l ly r e d u ce t h erunout to an acceptable amount.

TIRE AND WHEEL RUNOUTR a d ia l r u n o u t i s t h e d iffe r en ce b et w e en t h e h i gh

and low points on the tire or wheel (Fig. 8).

L a t e r a l r u n ou t i s t h e w o bbl e of the tire or wheel.

Fig. 5 First Measurement On Tire

Fig. 6 Remount Tire 180 Degrees

Fig. 7 Remount Tire 90 Degrees In Direction of

Arrow

Fig. 8 Checking Tire Runout



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R a dia l r u n ou t of m or e t h a n 1 .5 m m (. 06 0 i n ch )

m e a s u r e d a t t h e c e n t e r l i n e o f t h e t r e a d m a y c a u s e

the vehicle to shake.

L a t er a l r u n ou t of m or e t h a n 2 .0 m m (.0 80 in ch )

measured near the shoulder of the t ire may cause the

vehicle to shake.

Sometimes ra dial run out can be r educed. Relocate

t h e w h e e l a n d t i r e a s s e m b l y o n t h e m o u n t i n g s t u d s(See Method 1). If this does not reduce runout to an

acceptable level, the tire can be rotated on the wheel.

(See Method 2).

METHOD 1 (RELOCATE WHEEL ON HUB)

Check accura cy of th e wheel mounting surface; ad-

just wheel bearings.

Drive vehicle a short distance to eliminate t ire flat

spotting from a parked position.

Make sure all wheel nuts are properly torqued.

R el oca t e w h e el on t h e m ou n t i n g, t w o s t u d s ov er

from the original position.

R e-t igh t en w he el n u t s u n t il a ll a r e p r op er ly

torqued, to eliminate brake distortion.

C h e ck r a d i a l r u n ou t . I f s t i ll e xce s si ve , m a r k t i r e

s id ew all, w he el, a n d s tu d a t p oin t of m a xim u m

run out and proceed to Method 2.

METHOD 2 (RELOCATE TIRE ON WHEEL)

Rota ting t ire on wheel is pa rticularly effective when

there is runout in both t ire and wheel.

Remove tire from wheel and re-mount wheel on hub

in former position.

Check wheel radial runout (Fig. 9).

STEEL WHEELS: Radial runout 0.040 in., Lateralrun out 0.045 in.

AL U MI N U M W H E E L S: R a d ia l r u n o u t 0 .0 30 i n .,

Lateral ru nout 0.035 in.

I f p oi n t of g r e a t e st r u n o u t i s n e a r or i gi n a l c h a lk

mark , remount t ire 180 degrees. Recheck run out.

Fig. 9 Checking Wheel Runout



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V E H I C L E V I B R AT I O N

Vehicle vibration can be caused by:

Tire/wheel unba lance or excessive r un out

Defective tires with extreme tread wear

Nylon overlay flat spots (performan ce tires only)

Incorrect wheel bearing adjustment (if applicable)

Loose or worn suspension/steering components C er t a i n t i r e t r e a d p a t t e r n s

I n cor r e ct d r iv e s h a ft a n g le s or e xce s si ve d r iv e

shaft/yoke runout

Defective or worn U-joints

Excessive brake rotor or drum runout

Loose engine or transmission supports/mounts

And by engine operat ed a ccessories

Re fe r t o t he a pp ro pri ate Gro up s in th is

m a n u a l f o r a d d i t i o n a l i n f o r m a ti o n .

VIBRATION TYPESThere are two types of vehicle vibration:

Mechanical Audible.

Mecha nical vehicle vibrat ion can be felt th rough t he

seats, floor pan and/or steering wheel.

Au d i bl e v eh i cl e v ib r a t ion i s h e a r d a b ov e n or m a l

b a ck g r ou n d n oi se . T h e s ou n d ca n b e a d r on i n g o r

drumming noise.

Vibrations are sensitive to change in engine torque,

vehicle speed or engine speed.

ENGINE T ORQUE SENSITIVE VIBRATION

This vibration can be increased or decreased by:

Accelerating

Decelerating Coasting

Maintaining a constant vehicle speed

VEHICLE SPEED SENSITIV E VIBRATION

This vibration condition always occurs at the same

vehicle speed regardless of the engine torque or en-

gine speed.

ENGINE SPEED (RPM) SENSITIVE VIBRATION

This vibration occurs at varying engine speeds. I t

can be isolated by increasing or decreasing the engine

speed with the transmission in NEUTRAL position.

VIBRATION DIAGNOSISA vibration diagnosis should always begin with a 10

m i le (1 6 k m ) t r i p (t o w a r m t h e v eh i cl e a n d t i r es ).

Then a road test to identify the vibration. Corrective

a ct i on s h ou l d n ot b e a t t e m p t e d u n t i l t h e v ib r a t ion

type has been identified via a road test.

During the road test , drive the vehicle on a smooth

sur face. If vibrat ion exists, note a nd record the follow-

ing information:

Identify the vehicle speed range when the vibration

occurs

Identify the type of vibration

Identify the vibration sensitivity

Determine if the vibration is affected by changes in

vehicle speed, engine speed and engine torque.

When the vibration has been identified, refer to the

Vibrat ion Diagnosis chart for causes. Consider cor-recting only those causes coded in the chart that are

related to the vibration condition.

Refer to the following cause codes and descriptions

for explanations when referring to t he chart .

T RR Ti r e a n d Wh e e l R a d i a l R u n o u t : Vehicle

speed sensitive, mecha nical vibrat ion. Th e ru nout will

not cause vibration below 20 mph (32 km/h).

WH Whe e l H o p: Vehicle speed sensitive, me-

ch a n i ca l v ib r a t ion . T h e w h e el h op g en e r a t e s r a p id

up-down movement in the steering wheel. The vibra-

t i o n i s m o s t n o t i c e a b l e i n t h e 2 0 - 4 0 m p h ( 3 2 - 6 4

km/h) range. The wheel hop will not cause vibrationbelow 20 m ph (32 km /h). Wheel h op is caused by a

t ir e/w he el t h a t h a s a r a dia l r u n ou t of m or e t h a n

0.045 of-an-inch (1.14 mm ). If wh eel ru nout is a ccept-

able and combined runout cannot be reduced by repo-

sitioning the tire on wheel, replace tire.

TBTire/Wheel Balance: Vehicle speed sensitive,

mechanical vibration. Static tire/wheel unbalance will

not cause vibration below 30 mph (46 km/h). Dynamic

tire/wheel u nbalance will n ot cause vibration below

40 mph (64 km/h).

TLRTire/Wheel Lateral runout: Vehicle speed

sensitive, mechan ical vibration. The run out will not

ca u s e v ib r a t ion b el ow 5 0 - 5 5 m p h (8 0 - 8 8 k m /h ).

E x ce s si ve l a t er a l r u n o u t w il l a l s o ca u s e fr on t -e n d

shimmy.

TWTire Wea r: Vehicle speed sensitive, a udible

vibration. Abnormal tire wear causes small vibration

in the 30 - 55 mph (88 km/h) range. This will produce

a whine noise at high speed. The whine will change to

a growl noise when the speed is reduced.

WTire Waddle: Vehicle speed sensitive, mechani-

cal vibration. Irregular tire uniformity can cause side-

to-side motion during speeds up to 15 mph (24 km/h).

If th e m otion is excessive, identify the defective tire

and replace i t .

U AJ U n i v e rs a l J o i n t ( Dr iv e S h a ft ) An g l e s:

Torque/vehicle speed sensitive, mechanical/audible vi-

bration. Incorrect drive shaft angles cause mechanical

vibration below 20 mph (32 km/h) and in the 70 mph

(112 km/h) range. The incorrect angles can also pro-

duce an audible vibration in the 20 - 50 mph (32 - 80

km/h) range. Caster adjustment could be required to

correct the angles.

U J U n i v e rs a l J o i n t s : Engine torque/vehicle

speed sensitive, mechan ical/audible vibration. If the



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U-joint is worn it will cau se vibration with almost a ny

vehicle speed/engine torque condition.

D SYD r i v e Sha f t a nd Yo ke s : Vehicle speed sen-

sitive, mechan ical/audible vibration. The conditionw il l n o t ca u s e v ib r a t ion b el ow 3 5 m p h (5 6 k m /h ).

E x ce s si ve r u n o u t , u n b a la n ce or d e n t s a n d b en d s i n

the shaft will cause the vibration. Identify the actual

cause and repair/replace as necessary.

WB Whe e l B e a r i ng s : Vehicle speed sensitive,

mechan ical/audible vibration. Loose wheel bearings

cause shimmy-like vibration at 35 mph (56 km/h) and

above. Worn bearings will also produce a growl noise

at low vehicle speed and a whine noise at high vehicle

s p ee d . T h e w h ee l b e a r in g s m u s t b e a d j u s t ed or r e -

placed, as applicable.

ANAxle Noise: Engine torque/vehicle speed sen-

sitive, m echa nical/audible vibra tion. The axle will notca u s e m e ch a n i ca l v ib r a t ion u n l es s t h e a x le s h a ft i s

bent. Worn or damaged axle pinion shaft or differen-

tial gears and bearings will cause noise. Replace the

defective component(s) as necessary.

S S CS u s p e n s io n a n d S t e e ri n g Co m p o n e n t s:

Vehicle speed sensitive, mechan ical vibrat ion. Worn

suspension/steering components can cause mechan i-

cal vibration at speeds above 20 mph (32 km/h). Iden-

tify a nd repair or replace th e defective component(s).

E AE n g i n e D r i v e n Ac c e s s o r i e s : Engine speed

sensitive, mechanical/aud ible vibrat ion. Vibration can

b e ca u s e d b y l oos e or b r ok e n A/C com p r e ss or , P S

p u m p , w a t e r p u m p , g e n e r a t o r o r b r a c k e t s , e t c . U s u -ally more noticeable when the transmission is shifted

i n t o t h e N E U T R AL p os it i on a n d t h e e n gi n e s p e e d

(rpm) increased. In spect th e engine driven a ccessories

in the engine compartment. Repair/replace as neces-

sary.

A D B A c c e s s o r y D r i v e B e l t s : Engine speed sen-

sitive, audible vibration. Worn drive belts can cause a

vibration that produces either a droning, fluttering or

r u m blin g n ois e. I n sp ect t h e d r ive b elt (s ) a n d

tighten/replace as necessary.

D E MD a m a g e d E n g i n e o r T ra n s m i s s i o n S u p -

p o rt Mo u nts : E ngin e speed sen sit ive,

mechan ical/audible vibration. If a support mount is

worn, noise or vibration will occur. Inspect the sup-

port mounts and repair/replace as necessary.

E S E x h a u st S y s te m : E n g in e s p ee d s e n si t iv e,

mechanical/au dible vibrat ion. If loose exhaust compo-

nents contact the vehicle body they will cause noise

and vibration. Inspect the exhau st system for loose,

br oken a nd m is-a lign ed com pon en ts a nd

repair/replace as necessary.

VIBRATION DIAGNOSIS



12/12

S P E C I F I C A T I O N S

W H EEL LU G N U T WHEEL DESCRIPTION


4791241 93ZJ Secc 22 Wheels and Tires

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Transcript of 4791241 93ZJ Secc 22 Wheels and Tires