flat tire CHEVROLET CAMARO 1967 1.G Chassis Owner's Manual

WHEELS AND TIRES 10-3

Fig.
3 - Spof Wear

to cautioning the owner of his driving habits, is to inter-

change tires regularly.

Side

This may be caused by incorrect wheel camber, under-

inflation, high cambered roads or taking corners at too

high a rate of speed.

The first two causes are the most common. Camber

wear can be readily identified because it occurs only on

one side of the treads, whereas underinflation causes

wear on both sides (fig. 2).

There is, of course, no correction for high cambered

roads.
Cornering wear is discussed further on.

Center

This is caused primarily by overinflation pf the tire

(fig. 2). Invisible fabric damage can also be caused by

overinflation.

Uneven

Uneven or spotty wear (fig. 3) is due to such irregu-

larities as unequal caster or camber, bent front or rear

suspension parts, out-of-balance wheels, brake drums
Fig.
4 - Cornering Wear

out-of-round, brakes out-of-adjustment, or other me-

chanical conditions. The remedy in each case consists

of locating the mechanical defect and correcting it.

Cornering

Since the introduction of independent spring front and

rear wheels, improvements in spring suspension have

enabled drivers to negotiate curves at higher rates of

speed with the same feeling of security that they had

with the older cars at lower speeds. Consequently,

curves are being taken at higher speeds with the result

that a type of tire wear called "Cornering Wear" (fig. 4),

frequently appears.

When a car makes an extremely fast turn, the weight

is shifted from a normal loading on all four wheels to an

abnormal load on the tires on the outside of the curve

and a very light load on the inside tires due to centrifugal

force. This unequal loading may have two unfavorable

results.

First, the rear tire on the inside of the curve may be

relieved of so much load that it is no longer geared to

CHEVROLET CHASSIS SERVICE MANUAL

WHEELS AND TIRES 10-4

the road and it slips, grinding off the tread on the inside

half of the tire at an excessive rate. This type of tire

shows much the same appearance of tread wear as tire

wear caused by negative camber.

Second, the transfer of weight may also over-load the

outside tires so much that they are laterally distorted

resulting in excessive wear on the outside half of the

tire producing a type of wear like that caused by ex-

cessive positive camber.

Cornering wear can be most easily distinguished from

abnormal camber wear by the rounding of the outside

shoulder or edge of the tire and by the roughening of the

tread surface which denotes abrasion.

Cornering wear often produces a fin or raised portion

along the inside edge of each row in the tread pattern.

In some cases this fin is almost as pronounced as a

toe-in fin, and in others, it tapers into a row of tread

blocks to such an extent that the tire has a definite step

wear appearance.

The only remedy for cornering wear is proper in-

struction of owners.

Fig.
5 - Tire Rotatidh

Rotation

To minimize the possibility of tire noise and to equal-

ize tire wear, it is recommended that tires be inter-

changed every 6000 miles as shown in Figure 5 or more

frequently in the case of extremely heavy wear.

NOTE:
Rotate Corvette tires at 4000 miles or

sooner.

Interchanging tires will effectively prevent undue wear

on any particular tire. II tire interchanging is followed

as recommended above, all tires will have the same

number of miles in each wheel position at the end of the

fourth change. When interchanging tires, inspect for

signs of abnormal wear, bulging, etc., stones, glass, and

nails should be removed before reinstallation.

Noise

Noise caused by the normal action of tire treads on

various road surfaces is often confused with rear axle
gears or other noises in the car.

The determination of whether tires are causing the

noise complained of is relatively simple. The car should

be driven at various speeds and note taken of part

throttle, and sudden acceleration and deceleration. Axle

and exhaust noises show definite variations under these

conditions, while tire noise will remain constant. Tire

noise is, however, most pronounced at speeds of approx-

imately twenty or thirty miles per hour.

The tires may be further checked by driving the ear

over smooth pavement with the tires at normal pressure

and again over the same stretch of pavement when the

tires have been inflated to fifty pounds pressure. Reduce

the tires to normal pressure one at a time to determine

the faulty tire or tires. This high inflation pressure

should immediately be reduced to normal after test. If

the noise for which the test is being made is caused by

tires,.
it will noticeably decrease when the tire pressure

is increased, whereas axle noise should show no change

in volume.

If, on inspection, the tires on the front wheels are

found to be creating most of the noise the alignment of

the front wheels should be checked. Excessive tire noise

usually results from lower than recommended tire pres-

sure, incorrect alignment, uneven tire wear, or defective

(thumper) tire.

Cleaning

A great deal of ordinary road dirt which collects on

white sidewall tires may be sponged off with clear water

or a mild soap solution.

A good brand of whitewall tire cleaner, however, is

a quicker and more effective cleaner for removing dirt

and stains from whitewall tires and in many cases it

will remove stains and discoloration that the simpler

method of soap and water will not remove.

Under no circumstances should gasoline, kerosene or

any cleaning fluid containing a solvent derived from oil

be used to clean whitewall tires. Oil in any form is

detrimental to tire rubber and a cleaner with an oil base

will discolor or injure whitewall tires.

Change (W/Wheels)

To change the road wheels using the jack that comes

with the car, observe the following procedure:

1.
Set hand brake and block front wheels if rear wheel

is being changed.

2.
Remove hub cap or wheel disc and break wheel

mounting nuts loose.

3.
Place the jack as directed tinder, General Informa-

tion,
Section 0 and raise car until wheel clears

ground.

4.
Remove wheel mounting nuts and remove wheel from

hub or drum.

5. To replace road wheel, reverse the above instrue-

. tions. Proper torque on nuts is 55-75 ft. lbs.

torque (70-85 ft. lbs. for Corvette aluminum wheel

nuts).

CAUTION: On models equipped with discs, in-

dex the pilot hole in the disc on the valve stem.

(To insure that the anti-rotation notches in wheel

disc register on lugs in wheel rim.)

CHEVROLET CHASSIS SERVICE MANUAL

WHEELS AND TIRES
10-6

lifted on the rim to force the top tire bead

against the top rim flange. The weight of the

tire will seat the bottom bead.

Repair

When a tire loses all or most of its air pressure,

particularly when driving at high legal speeds on today1 s

super-highways, recommended procedure is to remove it

from the wheel for complete inspection to be sure no

tire damage has occurred. Punctured tires should be

removed from the wheel and permanently repaired from

the inside.

Externally applied plug type repairs should be con-?

sidered temporary and the tire should be permanently

repaired as soon as possible.

Hot Patch Method

It is essential to thoroughly clean and remove all

foreign matter from the hole left by the puncturing-object

without enlarging the injury and then follow the manu-

facturer's instructions for vulcanizing the patch.

Rubber Plug Methods

There are several types of rubber plugs--some are

inserted from the inside of the tire; others are inserted

from the outside of the tire without demounting the tire

from the rim.

When using the plug method be sure to clean and

lubricate the hole with repair cement before inserting

the plug. Your tire supplier has available complete kits

containing materials, tools and detailed instructions for

making repairs with plugs. Follow instructions in the kit

you use.

Cold Patch Method

(Self Vulcanizing Type)

In this method it is essential to thoroughly clean and

remove all foreign matter from the hole left by the

puncturing object without enlarging the injury; also on

the inside of the tire, buff an area large enough for the

patch. Follow the manufacturer1 s instructions for appli-

cation of the special cement and self-vulcanizing cold

patch.
Pressure Gun Method

Several types of pressure guns are available. Consult

your tire supplier for materials and instructions.

Tire Installation Safety Precautions

When tires are mounted on dirty or corroded rims, or

when they are not properly centered on rims, the tire

bead may "bind" on the rim, and refuse to seat. Allowing

pressure to continue to build up within the assembly in

an attempt to seat the tire bead is a DANGEROUS PRAC-

TICE which can result in a broken tire bead, and serious

injury to the serviceman.

1.
Make sure that rim flanges and bead ledge (espe-

cially hump and radius) areas are smooth and clean.

Remove any oxidized rubber, dried soap solution,

rust, heavy paint, etc. with a wire brush, or, in ex-

treme cases, a file.

2.
Lubricate tire beads, rim flanges, and bead ledge

areas with a liberal amount of thin vegetable oil

soap solution, or approved rubber lubricant,

3.
Insure that air pressure build-up during the bead

seating process is not allowed to exceed 40 pounds

pressure. If beads have not seated by the time pres-

sure reaches 40 pounds, assembly should be deflated,

re-positioned on rim, re-lubricated and re-inflated.

4.
Make sure valve core is inserted in valve stem

prior to inflating.

5.
Use an extension gauge with clip on chuck so air

pressure build-up can be closely watched and so

that you can stand well back from the assembly

during the bead seating process.

WHEELS

Valve Assembly

Replace

NOTE: Always use new valve assembly when

replacing.

1.
Cut or drive old valve assembly out of rim.

2.
Clean valve hole and surrounding area on inside of

flange with steel wool.

Fig. 6 - Installing Valve
Fig. 7 - Rim Inspection

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-3

Fig.
2 - T-3 Safety Aimer

wearing away the insulation due to vibration.

By referring to the wiring diagrams, circuits may be

tested for continuous circuit or shorts with a conventional

test lamp or low reading volt meter.

HEADLAMP ADJUSTMENT-

T-3 HEADLAMPS

CAUTION: Check and tighten radiator support

grille retaining bolts prior to attempting head-

lamp aiming. Distorted grille or supports in

this area will hinder proper aiming of head-

lamps. On Corvette models make sure head-

lamp panel is adjusted properly - refer to

"Headlamp Panel Travel Adjustment".

When aiming headlamps, vehicle should be filled to ca-

pacity with gas, oil, and water but no load. Tires should

be uniformly inflated to recommended pressure.

the T-3 Safety Aimer-Type B (fig. 2), is used for the

headlamp aiming description that follows. An adapter is

required with the Type B T-3 Aimer when adjusting the 7

inch headlamp used on the Chevy n vehicle.

1.
Drive vehicle onto selected aiming area. Bounce

vehicle several times and allow to settle.

2.
Remove headlamp bezels.

3.
Mount the T-3 Aimers on either the No. 1 or No. 2

pair of headlamps so that "the points of the headlamps

engage the smooth inner ring of the aimers.
HORIZONTAL

AIMING

SCREW

STRING OVER

"2R" ON AIMER ARM

Fig.
4—-Headlamp Horizontal Adjustment

NOTE:
In the dual headlamp installation, the

inboard unit is designated No. 1 and the outboard

unit is designated No. 2.

4.
Secure the aimers to the headlamp units by firmly

pressing knob at center of each aimer (fig. 3). Ro-

tate crossarms inboard to approximate horizontal

position.

NOTE:
Moisten suction cups slightly to obtain

maximum holding force.

5. With both aimers in place, knot both ends of elastic

string and, using slots provided, fasten string across

horizontal crossarms of each aimer.

6. Rotate both aimers so that the string just clears the

points on the crossarms.

HORIZONTAL ADJUSTMENT

7. a. Turn horizontal aiming screw, Figure 4, on left-

VERTICAL ADJUSTMENT SCREW

Fig.
3 - Installing Aimer on Headlamp Unit
Fig.
5 - Headlamp Vertical Adjustment

CHEVROLET CHASSIS SERVICE MANUAL

SPECIFICATIONS
21

WHEELS AND TIRES

SECTION 10

CHEVY II

Tire Usage and Recommended Tire Inflation Pressures

Pounds per Square Inch (PSI) Cool

Models

All Models Except

Station Wagon

Station Wagon
Tire

Ply

4 Ply Rating

2 Ply

8 Ply Rating

4 Ply
Tire

Usage

6.95 x 14

6.95 x 14
Standard Inflation Pressure

for all Loads

including Full Rated

1 to 6 passengers

+ 200
lbs. luggage

(1,100 lbs. load)

Front

26**
Rear

26**

1 to 6 passengers

+ 300 lbs. cargo

(1,200 lbs. load)

Front

24
Rear

40
Optional Inflation

Pressure for

Reduced Load

1 to 5 passengers

(750 lbs. load)

Front

24
Rear

24

1 to 5 passengers

(750 lbs. load)

Front

22
Rear

28

•Optional tires are not available.

**Add 2 psi when vehicle is equipped with V-8 engine.

1.
Tire inflation pressures may increase as much as

six (6) pounds per square inch (PSI) when hot.

2.
For continuous high speed operation (over 75

increase tire inflation pressures four (4) pounds per

square inch over the recommended pressures up to

a maximum of 32 pounds per square inch cool for

4-ply rating tires dr 40 pounds per square inch for

8-ply
rating tires. Sustained speeds above 75 MPH

are not recommended when the 4 pounds per square

inch adjustment would require pressures greater

' than the TpaxiTP^Tns stated above.
3.
Cool tire inflation pressure: after vehicle has been

inoperative for three (3) hours or more, or driven

less than one (1) mile.

Hot tire inflation pressure: after vehicle has been

driven ten (10) miles or more at 60-70 MPH.

4.
Station Wagon loads should be distributed as far

forward as possible.

5. Vehicles with luggage racks do not have a load limit

greater than the l,100# load (l,200# load for station

wagons) specified above.

6. When towing trailers, the allowable passenger and

cargo load must be reduced by an amount equal to

the trailer tongue load on the trailer hitch.

CHEVELLE

Tire Usage

Engine and Body Styles

L-6, All styles except Station Wagon

283 V-8, All styles except Station

Wagon, Spt. Sedan and Convertible

283 V-8, Sport Sedan and Convertible

327 V-8 Std., except Sport Sedan

and Convertible

327 V-8 Std., Sport Sedan and

Convertible

327 V-8 H.P., All styles

396 V-8, Pick-Up Delivery

396 V-8, Super Sport Convertible and

2-Door Coupe

All engines, Station Wagon
Standard 14 Inch

With A/C*

7.35

7.75

7.75

7.75

F70

7.75
Without A/C*

7.35

7.35

7.75

7.75

F70

7.75
Optional 14 Inch

With A/C*

7.75

—

-

--

-

7.75

(8-Ply Rating,

4-Ply)
Without A/C*

7.75

7.75

-

—

-

7.75

(8-Ply Rating,

4-Ply)

*A/C (Air Conditioning)

All tires listed are 4-ply rating, 2-ply unless otherwise specified.

CHEVROLET CHASSIS SERVICE MANW

SPECIFICATIONS
22

CHEVELLE (CONT'D)

Recommended Tire inflation Pressures

Pounds per Square Inch (Cool)

Models

All Models Except

Those Shown Below

Station Wagons

El Camino
Tire Ply

4 Ply Rating-2 Ply

4 Ply Rating-2 Ply

8 Ply Rating-4 Ply

4 Ply Rating-2 Ply
Standard Inflation for

all Loads including

FuH Rated

1 to 6 passengers

+ 200 lbs. luggage

(1,100 lbs. load)

Front Rear

26 26

1 to 6 passengers (2 Seat)

+ 300 lbs. cargo

(1,200 lbs. load)

Front Rear

22 30

22 30

1 to 3 passengers

+
800 lbs. cargo

(1,250 lbs. load)

Front Rear

24 30
Optional Inflation for

Reduced Loads

1 to 5 passengers

(750 lbs. load)

Front Rear

24 22

1 to 5 passengers

.. (750 lbs. load)

Front Rear

22 ^6~

22 26

1 to 3 passengers •

+ 300 lbs. cargo

(750 lbs. load)

Front Rear

"24~
~W~

1.
Tire inflation pressures may increase as much as

six (6) pounds per square inch (PSI) when hot.

2.
For continuous high speed operation (over 75 MPH)

increase tire inflation pressures four (4) pounds per

square inch over the recommended pressures up to

a maximum of 32 pounds per square inch cool for

4-ply rating tires or 40 pounds per square inch for

8-ply rating tires. Sustained speeds above 75 MPH

are not recommended when the 4 pounds per square

• inch adjustment would require pressures greater

than the maximums stated above.

3.
Cool tire inflation pressure: after vehicle has been

inoperative for three (3) hours or more; or driven

less than one (1) mile.
Hot tire inflation pressure: after vehicle has been

driven ten (10) miles or more at 60-70 MPH.

4.
Station Wagon and El Camino loads should be dis-

tributed as far forward as possible.

5. Vehicles with luggage racks do not have a load

limit greater than the 1 > 100# load (l,200# for Station

Wagons or l,250# for El Camino) specified in the

Tire Inflation Pressure Table.

6. When towing trailers, the allowable passenger and

cargo load must be reduced by an amount equal to

the trailer tongue load on the trailer hitch.

OLETO
SERVICE MANUAL

SPECIFICATIONS 23

CAMARO

Tire Usage and Recommended Tire Inflation Pressures

Pounds per Square Inch (PSI) Cool

Models

All Except

Super Sport

Super Sport
1 to 5 passengers

+ 200
lbs. luggage

(950 lbs. load)
Tire Ply

4 Ply Rating-

2 Ply*
Tire Usage

7.35 x 14

D70-14
Standard Inflation Pressure for

all Loads including Full Rated

Front

24**

26
Rear

24**

26

•Optional tires not available.

**Add 2 psi. when vehicle is equipped with 327 V-8

and air conditioning*

1.
Tire inflation pressures may increase as much as

six (6) pounds per square inch (PSI) when hot.

2.
For continuous high speed operation (over 75 MPH)

increase tire inflation pressures four
(4)
pounds per

square inch over the recommended pressures up to

a maximum of 32 pounds per square inch cool for

4-ply rating tires.
3.
Cool tire inflation pressure: after vehicle has been

inoperative for three (3) hours or more, or driven

less than one (1) mile.

Hot tire inflation pressure: after vehicle has been

driven ten (10) miles or more at 60-70 MPH.

4.
Vehicles with luggage racks do not have a load

limit greater than the 950 lbs. load specified above.

5. When towing trailers, the allowable passenger and

cargo load must be reduced by an amount equal to

the trailer tongue load on the trailer hitch.

CORVETTE

Tire Usage and Recommended Tire Inflation Pressures

Pounds per Square Inch (PSI) Cool

Models

All Models
1 to 2 passengers

+150 lbs. luggage

(450 lbs. load)
Tire Ply

4 Ply Rating-

2 Ply*
Tire Usage

7.75-15*
Standard Inflation Pressure for

all Loads including Full Rated

Front

24
Rear

24

•Optional tires are not available.

1.
Tire inflation pressures may increase as much as

six (6) pounds per square inch (PSI) when hot.

2.
For continuous high speed operation (over 75 MPH)

increase tire inflation pressures four
(4)
pounds per

square inch over the recommended pressures up to

a maximum of 32 pounds per square inch cool for

4-ply rating tires.
3.
Cool tire inflation pressure: after vehicle has been

inoperative for three (3) hours or more, or driven

less than one (1) mile.

Hot tire inflation pressure: after vehicle has been

driven ten (10) miles or more at 60-70 MPH.

4.
Vehicles with luggage racks do not have a load limit

greater than the 450# load specified above.

5. When towing trailers, the allowable passenger and

cargo load must be reduced by an amount equal to

the trailer tongue load on the trailer hitch.

CHEVROLET CHASSIS SERVICE MANUAL

SPECIFICATIONS 24

CHEVROLET

Engine and Body Styles

All. Engines, All Styles except

Those Shown Below

427 V-8 Super Sport 2-Door Coupe and

Convertible (Z-24 Option)

All Engines, Station Wagon
Tire

14 Inch

8.25

8.25

8.55
Usage

STANDARD TIRE

15 Inch (With Disc

8.15

G70-15

8.45 (8-Ply Rating,
Brakes)

4-Ply)
OPTIONAL TIRE

14 Inch

8.25 (a-Ply Rating,

4-Ply)

. —. ...

8.55 (8-Ply Rating,4-Ply)

All tires listed are 4-Ply Rating, 2-Ply except where indicated.

Recommended Tire Inflation Pressures—Pounds per Square.Inch (Cool)

' Models

All Models Except Station

Wagons

Station Wagons (Without Disc

Brakes—14" Wheels

Station Wagons (With Disc

Brakes-15" Wheels)
Tire Ply-

4 Ply Rating-2 Ply

8 Ply Rating-4 Ply

4 Ply Raging—2 Ply

8 Ply Rating-4 Ply

8 Ply Rating-4 Ply
Standard Inflation

for All Loads

Including Full Rated

1 to 6 Passengers

+ 200 lbs. luggage

(1100 lbs. load)

Front

24

24
Rear

28

28

1 to 6 passengers (2 Seat)

+ 300 lbs. cargo

or 1 to 8 pass. (3 Seat)

(1200 lbs. load)

Front

22

22
Rear

32

32

1 to 6 passengers (2 Seat)

+ 300 lbs. cargo

or 1 to 8 pass. (3 Seat)

(1200 lbs. load)

Front

22
Rear

34
Optional Inflation

ior

Reduced Loads

1 to 5 passengers

(750 lbs. load)

Front

"24~

24
Rear

24

24

1 to 5 passengers

(750 lbs. load)

Front

22

22
Rear

26

26

1 to 5 passengers

(750 lbs. load)

Front

22
Rear

26

1.
Tire inflation pressures may increase as much as

six (6) pounds per square inch (PSI) when hot

2.
For continuous high speed operation (over 75 MPH)

increase tire inflation pressures four (4) pounds per

square inch .over the recommended pressures up to

a maximum of 32 pounds per square inch cool for

4-ply rating tires or 40 pounds per square inch for

8-ply rating tires. Sustained speeds above 75 MPH

are not recommended when the 4 pounds per square

inch adjustment would require pressures greater

than the maximums stated above.

3.
Cool tire inflation pressure? after vehicle has been

inoperative for three (3) hours or more, or driven

less than one (1) mile.
Hot tire inflation pressure: after vehicle has been

driven ten (10) miles or more at 60-70 MPH.

4.
Station Wagon loads should be distributed as far

forward as possible.

5. Vehicles with luggage racks do not have a load

limit greater than the l,000# loads (l,200# for

Station Wagons) specified in the Tire Inflation

Pressure Table.

6. When towing trailers, the allowable passenger and

cargo load must be reduced by an amount equal to

the trailer tongue load on the trailer hitch.

CHEVROLET CHASSIS SERVICE MANUAL