coil CHEVROLET CAMARO 1967 1.G Chassis Workshop Manual

GENERAL INFORMATION 0-8

nun

Illllfl Q

i,,,,,,,,

DRIVE ON HOIST

BUMPER JACK LIFTING AT FRAME ATTACHMENT ONLY

FLOOR JACK OR HOIST LIFT

Fig.
22—Vehicle Lifting Points—Chevelle

TOWING THE CAMARO

The recommended method for towing the Camaro is

follows.

Front

Connect standard chain hooks near the outer ends of

the front suspension lower control arms in between the

coil springs and the stabilizer bar link bolt (fig. 23).

The chains should be attached to the lower lifting sling

bar so that when the vehicle is raised the rubber straps

protect the front valance panel (fig. 24). Caution should

be exercised when attaching the lower lifting bar that the

upper lifting bar does not damage the hood header panel.
Fig. 23—Attachment of Towing Chain Hooks

to Lower Control Arms

CHEVROLET CHASSIS SERVICE MANUAL

HEATER AND AIR CONDITIONING 1A-37

VACUUM SYSTEM COMPONENT FUNCTION

Component

Air Door Diaphragm

Power Servo

Vacuum Relay Valve

Mode Door Diaphragm

Defroster Diaphragm

Transducer

Thermo Vacuum Valve
Vacuum Applied

Air Door Open to Outside Air

(Closed to Car Body)

Maximum Heat

Vacuum Applied to One Port Opens a Passage

Through the Valve to Allow Transducer Vacuum

to be Supplied to the Power Servo

Vacuum to Linkage Side

Air Flow Out Heater

Ducts

Full Airflow Out Heater

Outlet
Vacuum to Covered Side

Airflow Out of Upper

Outlets

Full Airflow Out Defroster

Outlets (Full De-ice)
No Vacuum Applied

Air Door Open to

Re circulated Air

(Open to Car Body)

Maximum Cooling

No Vacuum Applied Closes

Vacuum Supply to Power

Servo

Airflow Out of Upper and

Lower Outlets Door Open

1"
from 100% Lower Out-

let Position

Airflow Divided 1/3 Out

Defroster Outlets 2/3

Out Heater Outlets

Supplies Modulated Vacuum to Power Servo

Zero Voltage Applied to Transducer

Results in Maximum Vacuum Supply
10 Volts Applied to Transducer

Results in No Vacuum Supply

(Coolant Hot) Passes Vacuum When System is Calling For Outside Air

MAINTENANCE AND ADJUSTMENTS

EVAPORATOR CONTROL VALVE (POA)

(Chevrolet, Chevelle, Comoro, and Corvette

Four Season) (Chevrolet Comfortron)

The only check for proper POA valve operation is to

check the suction pressure at the valve as during a

performance test. The POA valve is an absolute valve

and will provide different gauge readings based on the

altitude where the readings are being taken. Correct

gauge reading at sea level is 29.5 psig. Gauge readings

will be one-half psi higher for each additional 1000 feet

of elevation. The following table lists gauge readings at

different altitudes. If a valve gives improper gauge

readings, it must be replaced since it is not repairable

or adjustable.

29.5

30.0

30.5

31.0

31.5

32.0

32.5

33.0

33.5

34.0

34.5
psig.

psig.

psig.

psig.

psig.

psig.

psig.

psig.

psig.

psig.

psig.
— Sea 1

— 1000

— 2000

— 3000

— 4000

— 5000

— 6000

— 7000

— 8000

— 9000
Level

ft.

ft.

ft.

ft.

ft.

ft.

ft.

ft.

ft.

— 10000 ft.
THERMOSTATIC SWITCH

(Universal and Chevy II All-Weather System)

Thermostatic switches used in Universal and All-

Weather systems differ only in the capillary tube sensing

unit.

The Chevy n All-Weather System thermostatic switch

has an air sensing capillary which is coiled and attached

to the front of the evaporator core with plastic plugs.

This type of unit is controlled by the temperature of the

air leaving the evaporator.

Universal systems make use of a thermostatic switch

with a fin sensing capillary or a self-supporting air sens-

ing capillary. This capillary controls the switch by

sensing the temperature of the metal fins or the air

leaving the fins.

Checking for Proper Operation

1.
Install the gauge set and set up the vehicle as

described under Performance Test.

2.
Movement of the temperature control knob should

result in a definite change in suction pressure and

cycling of the compressor clutch.

• If compressor continues to operate regardless of

the knob adjustment, it indicates that the points

CHEVROLET CHASSIS SERVICE MANUAL

HEATER AND AIR CONDITIONING 1A-76

Fig.
112—-Heater Core Removal—Four-Season System (Corvette)

3.
Replace the core case into the car as described

under Heater and Air Distributor Assembly.

COMPRESSOR

The same basic six.cylinder reciprocating compressor

is used in all systems.

Two variations of the basic compressor are used. One,

with a displacement of 12.6 cu. in. is used with the Four-

Season System. The second model, having displacement

of 10.8 cu. in. is used with the Universal and All-Weather

Systems.
AH Systems

Removal

1.
Purge the refrigerant from the system.

2.
Remove connector attaching bolt and connector. Seal

connector outlets.

3.
Disconnect electrical lead to clutch actuating coil.

4.
Loosen brace and pivot bolts and detach belt.

5. Remove the nuts and bolts attaching the compressor

brackets to the mounting bracket.

6. Before beginning any compressor disassembly, drain

and measure oil in the compressor. Check for

evidence of contamination to ..determine if remainder

of system requires servicing. Compressor Servicing

information is located in the Chassis Overhaul

Manual.

Installation

1.
li oil previously drained from the compressor upon

removal shows no evidence of contamination, replace

a like amount of fresh refrigeration oil into the com-

pressor before reinstallatLon. If it was necessary to

service the entire system because of excessive con-

tamination in the oil removed, install a full charge of

"fresh refrigeration oil in the compressor. (See

Checking Compressor Oil Charge under Checking

Oil)

2.
Position compressor on the mounting bracket and

install all nuts, bolts and lock washers.

3.
Install the connector assembly to the compressor

rear head, using new "O" rings.

4.
Connect the electrical lead to the coil and install

and adjust compressor belt.

5. Evacuate and charge the system.

6. Leak test the system and check for proper operation.

Fig.
113—Heater Hoses^-Four-Season System (Corvette)

CHEVROLET CHASSIS SERVICE MANUAL

HEATER AND AIR CONDITIONING 1A-78

WIRING DIAGRAMS

Blower

Motor

Resistor
•

Asm

EVAPORATOR—v

ASM.
\

-Diode
(Arc I

suppressor)
^\

16B
—>

-COMPRESSOR

Clutch Coil

•To battery positive

(+) terminal
No vacuum

in hose
#3

Blower

intake

air

Outside

air entry

Valve

by vacuum
in

hose
#3
Valve

normally

closed (spring

held)

Inside

car
air

(Recirc.)
AIR INLET

VALVE

POSITION:

Outside
air
intake

Recirc. air'intake

CONTROL ASM

TEMP CONTROL LEVER

(Operates temp valve

cable
&
equipment
in

chart shown below)
Compressor
Sw.

(Normally closed

Temp valve

begins
to
open

valveV

cable
arm

•Fan Speed Selector Switch

Switch

lever

position

Off

Low

Med

High
Contacts

made

B
to
None

BtoL

B to L
&
M

B to
L
& H
Fan

speed

Low

Low

Med

High
Resistance

in series with

Bio Motor

Hi

Rl

(RiR2)/(Rl+R2)

None

•Blower switch contacts must
be
dosed

before
fan
switch will
be
operable.
COLD
(O.
A.)

COLD a.A.)

Blower

H
y—low
switch

M/
-med
(Norm,

closed

contacts)

Fan speed switch

(See chart
at
left)

To vacuum,

tank

EXTENSION—vy

Horn relay "Bat" WIRE
ASM
X
harness

terminal

V
.**-__.. ;_
1 I panel

Legend:

___. —
Production wiring

Wire
is
part
of
equip.

•—————* Air
conditioning
wrg.
| i

T Agn. sw.

accsy

I term.

I
Temp

Control

Lever

Position

OFF

VENT.

COLD(I.A.)

COLEKO.AJ

HOT
Blower

(Master)

switch

contacts

Open

Closed

Closed

Closed

Closed
Vac switch

connects

vac source

to hose
#

#2

#2
&
#3

None

#3

#2
&
#3
Compressor

switch

contacts:

Open

Open

Closed

Closed

Open
Blower

intake
air

Outside
car air

intake used

Inside
car air

recirculated

Outside
car air

intake used

.Outside
car air

intake used

Fig. 114—Chevrolet—Four-Season Wiring Diagram

CHEVROLET CHASSIS SERVICE MANUAL

HEATER
AND AIR CONDITIONING IA-79

BAT.
CABLE

ASM

A/C
wrg fwd of
dash

exc
bat.
cables,
ext
wire
&

compressor
grd
wire
is
part

of engine wiring harness.

"COMPRESSOR"
SW:

"OFF" POSN

"ON"
POSN
RELAY

ASM

/-DASH

/
PANEL

RESISTOR

ASM

LUTCH

COIL

:OMI

GRD
WIRE
ASM
MPRESSOR

BAT.
TERM

ON START

MTR SOL

EXTENSION WIRE ASM

._
J

J
^-CONTROL
SW

CONTACTS

B TO NONE

BTOL

BTOL&M

BTOL6H

•IGN SW ACCSY TERM.

A/C wrg
to
rear
of
dash

of
inst pnl harness.

Fig.
115—CheveIle—Four-Season Wiring Diagram

CHEVROLET
CHASSIS SERVICE MANUAL

HEATER
AND AIR
CONDITIONING
1A-80

EVAPORATOR ASM.

Blower

Motor
INSIDE VALVE

(Normally closed

-spring held)

PLENUM VALVE

(Normally open

-spring held)
Actuator

(Vacuum

operated)

Inside car air (Recirc*

CONTROL ASM

TEMP CONTROL LEVER

•(Operates temp valve

cable
&
equipment in

hart shown below)

Temp valve

begins to

16DG

Fuse (In-line^

COMPRESSOR

Clutch Coil DASH-

PANEL

•Fan Speed Selector Switch

Switch

lever

position

Off

Low

"HeST

High
Contacts

B to
None

BtoL

B to L b U

BtoL&H
Fan

speed

Low

Low

Med

High
Resistance

in series with

Bio Motor

Rl

Rl

RlR2)/(Rl+R2)

None

•Blower switch contacts must be closed

before fan switch will be operable.

-To battery positive

(-0 terminal

•
Horn relay

terminal"
"Batf
To vacuum

tank

EXTENSION

WIRE
ASM
(Normally closed

contacts-*vac

operated)

7
*- Fan speed switch

(See chart at left)

•/-Wire is

\ part of

I inst panel

harness

Legend:

— Production wiring

————
Wire Is part of equip.

•mmmmmmmmmmmmmm*
AIT
Conditioning
WTg*
Temp

Control

Lever

Position

OFF

VENT

COLD

a.A.)

COLD

(O.A.)

HOT
Blower

(Master)

switch

contacts

Open

Closed

Closed

Closed

Closed
Vac switch

connects

vac source

to hose #

#2
&
#3

#2

#3

None

#2
Compressor

switch

contacts^

Open

Open

Closed

Closed

Open
Blower

intake air

Outside car air

intake used

Inside car air

recir culated

Outside car air

intake used

Outside car air

intake used

Fig.
116—Camaro—Four-Season Wiring Diagram

CHEVROLET CHASSIS SERVICE

HEATER AND AIR CONDITIONING 1A-82

•BATTERY

(POS)
CABLE
NOTE
When
control
switch*

is !TOFF"
&
Air
Cond
is
"ON"

(Control
knob
pulled
but) the

blower
fan'will
run at low
speed.
CONTROL
SWITCH

CONNECTIONS

OFF

LOW

MED

HIGH
B
TO
NONE

B
TO L

BTOL&M

B
TO L
&
H

COMPRESSOR
GROUND

WIRE
ASM
BATTERY

(NEGATIVE)

CABLE

COMPRESSOR
ASM

DASHPAJSTEL

GROMMET

16DG
CONTROL

SWITCH

RESISTOR

ASM

14LBL

14BRN
CLUTCH

COIL

EXTENSION

WIRE
ASM
-14BRN--N

JUNC

BLOCKi

OSTATIC

SWITCH

CONTACTS

NORMALLY

CLOSED
STARTING

MOTOR

SOLENOID

BLOWER

MOTOR
AIR
COND

CONTROL

(PUSH-PULL)

KNOB

DOOR
SWITCH

(PUSH
BUTTON

NORMALLY

CLOSED)
RELAY

ASM

HORN

RELAY

DIVERTER

DOOR CABLE

FUSE

PANEL

EVAPORATOR

ASM

IGNITION SWITCH-

ACCESSORY TERMINAL)

Fig. 118—All Weather Wiring Diagram (Chevy II)

CHEVROLET CHASSIS SERVICE MANUAL

CORVETTE BODY 1B-T9

Fig.
43—Removing Regulator Assembly

REAR QUARTER

DOOR SILL PLATE AND MOLDING

Figure 49 shows assembly details of both the door sill

plate and molding. The sill plate which retains the car-*

pet, the cowl trim windlace and lock pillar front edge

trim are retained to the body by six screws.

The molding assembly, which replaces a rocker panel,

is quickly and easily replaced by removing 10 retaining

screws. The sill molding retainer is also fastened to the

body with screws.

REAR END

FOLDING TOP COMPARTMENT LID

Adjustments

Hinges

The folding top compartment lid should be adjusted so

that in the closed position the surface of the lid is flush

with surrounding body surfaces and space between lid

edge and body is 1/16" to 3/16" at sides and 3/16" to

1/4" at rear. Whenever lid position is changed on hinges,

lock engagement must be inspected and adjusted if neces-

sary. Adjust hinge position as follows:

1.
Scribe a line on lid surface following contour of hinge

strap.
This will ease observation of lid movement

during adjustment (fig. 51).

2.
To raise or lower top surface of lid, add or remove

hinge shims.

3.
To adjust spacing between lid edges and body, loosen

hinge-to-lid screws and shift lid as required.

Lock

Lock engagement may be adjusted as follows:

1.
Striker plates may be shimmed to adjust the depth

of lock engagement in striker plate. When this ad-

justment is made, release of lock should be tested

and adjusted as required.

2.
Release of lock may be adjusted by loosening lock

assembly retaining bolts and moving lock in ap-

propriate direction to the limit of slotted holes in

, lock base. Further adjustment may be gained by

moving cable retainer in appropriate direction.
Hinges

(Refer to Figure 52)

Removal

1.
Scribe around hinge as shown in Figure 51.

2.
Hinge may be removed as an assembly by opening

top compartment lid fully and removing 3 retaining

screws. Note number of shims found between hinge

frame and compartment floor.

3.
To remove spring from hinge assembly, close top

compartment lid as far as possible and insert Tool

J-9559 between expanded coils in spring. Opening

top compartment lid fully will allow removal of

spring as shown in Figure 53.

4.
As soon as spring is removed, insert long bolt sup-

plied with J-9559 through holes in end of tool, pass-

ing it through spring, and install nut on bolt.

Spring may be removed from J-9559 or J-9559 may be

installed in a new spring, by the following method:

1.
Place a closed 6 or 8 inch "C" clamp in a vise or

fasten it to a heavy bench top (bench should be fas-

tened to floor).

2.
Hook one end of spring in clamp and the other end

in hook of chain hoist, "cherrypicker" or equivalent,

as shown in Figure 54.

3.
Stretch the spring enough to allow insertion of

J-9559. Install through bolt if spring is not to be in-

stalled on hinge at once.

installation

1.
Install same number of shims as removed or, if

repairing collision damage, etc., position hinge in

compartment, install upper mounting screws, fill

gap between floor and hinge frame with shims and

install lower mounting screw.

2.
If spring has been removed from hinge, install

spring in J-9559 and place spring on hinge with com-

partment lid raised; closing lid releases J-9559 for

removal. Upper end of spring should rest in one of

three notches yielding best lid operation. About 3

pounds pressure should be necessary to close lid.

Lock

Removal

1.
Remove cable mounting clamps. Remove retainer

from control cable assembly and disengage cable

from control.

2.
Scribe a mark on lid following outer contour of lock

assembly.

3.
Remove 3 lock assembly retaining screws and re-

move lock from compartment lid.

Installation

1.
Place lock assembly on compartment lid within

scribed line and install retaining screws.

2.
Install end of cable in control assembly and fasten

retainer securely.

3.
Test operation of lock thoroughly, adjusting if neces-

sary as outlined in this section.

Control

Removal

1.
Remove inner mounting clamps from both cables

and disengage cables from control by removing

retainers.

CHEVROLET CHASSIS SERVICE MANUAL

SECTION
3

FRONT SUSPENSION

INDEX

Page

General Description
. . . . 3-1

Maintenance and Adjustments
3-3

Front Wheel Bearing Adjustment
3-3

Front End Alignment
3-5 .

Alignment Preliminary Steps ............
3-5

Caster
and
Camber Adjustments
. . 3-5

Chevelle, Caxnaro
and
Corvette
3-5

Chevrolet and Chevy
II 3-6

Steering Axis Inclination
3-6

Toe-in Adjustment
3-6

Cornering Wheel Relationship
3-6

Riding Heigit
and
Coil Spring Sag
3-7

Repair Procedures
3-8

Front Brake Drum (Chevrolet, Camaro, Chevelle,

Chevy E)
. . 3-8

Removal
3-8

Installation
3-8

Front Wheel Hub
3-8

Replacement
. . . . . 3-8

Replacement
of
Hub Wheel Bolts
3-8

Front Wheel Bearings
. . 3-8

Removal
3-8

Inspection
3-9

Repairs
. . 3-9

Replacement
of
Bearing Cups
3-9

Installation
3-9

Steering Knuckle
. . . 3-9

Removal
3-9

Installation
3-9

Shock Absorber
3-10

Chevrolet, Chevelle, Camaro
and

Corvette
3-10

Removal
, . 3-10

Installation
3-10

Chevy
It 3-11

Removal
3-11

Installation
3-11

Stabilizer
Bar 3-11

Removal
3-11

Installation
3-11

Strut Rod
3-11

Chevrolet and Chevy
II 3-11

Removal
3-11

Installation
3-12

Front Coil Springs
3-12

Chevrolet
3-12

Removal
3-12

Installation
3-13

Chevelle
and
Camaro
3-13

Removal
3-13

Installation
3-14

Chevy H
3-14

Removal
3-14

Spring Seat Disassembly and Assembly
3-15

Installation
3-15

Corvette
3-15

Lower Control Arm Spherical Joint
.' 3-16

Chevrolet, Chevelle, Camaro and

Corvette
3-16

Inspection
. 3-16

Chevrolet and Corvette
3-16

Removal
3-16

Installation
3-16
Page

Chevelle
and
Camaro
3-17

Removal
3-17

Installation
. . . . 3-17

Chevy
II 3-17

Inspection
. 3-17

Removal
3-17

Installation
3-17

Lube Fittings
3-18

Lower Control Arm
. . . . 3-18

Chevrolet
. 3-18

Removal
3-18

Installation
3-18

Chevelle and Camaro
3-18

Removal
3-18

Installation
3-18

Chevy H
3-18

Removal
3-18

Installation
3-19

Corvette
3-19

Removal
3-19

mstallation
3-19

Lower Control Arm Bushings
3-20

Chevrolet
3-20

Removal
3-20

Installation
3-20

Chevelle and Camaro
. 3-20

Removal
3-20

Installation
3-20

Chevy H
3-21

Removal
* 3-21

InstaEation
3-21

Cross Shaft and/or Bushings
. 3-21

Corvette
3-21

Removal
3-21

Installation
3-21

Upper Control Arm Spherical Joint
3-21

Chevrolet, Chevelle, Camaro and Corvette
..... 3-21

Inspection.
3-21

Replacement
3-21

Chevy
II 3-21

Inspection
3-21

Replacement
3-21

Lube Fittings
3-22

Upper Control Arm
3-22

Chevrolet, Chevelle, Camaro
and
Corvette
3-22

Removal
3-22

Installation
3-22

Chevy H
3-22

Removal
3-22

Installation
3-23

Upper Control Arm Cross Shaft

and/or Bushings
3-23

Chevrolet, Camaro and Chevelle
3-23

Removal
. 3-23

Installation
3-23

Chevy H
3-24

Removal
3-24

Installation
. . . 3-25

Corvette
3-25

Removal
3-25

Installation
3-25

Special Tools
3-26

Specifications
...'..'
At rear of Book

GENERAL DESCRIPTION

The 1967 Chevrolet, Chevelle, Camaro, Chevy n and

Corvette front suspension systems are basically similar,

being of the
S.L.A.
(short-long arm) type with independent

coil springs. In the Chevrolet, Chevelle, Camaro and

Corvette the springs ride on the lower control arms; in
the Chevy II the springs ride on the upper control arms.

Spherical joints connect the upper and lower arms to the

steering knuckle. Tapered roller wheel bearings are

used.

Camber angle is adjusted, on the Chevrolet and Chevy n

CHEVROLET CHASSIS SERVICE MANIM

FRONT SUSPENSION 3-6

Fig.
8 - Caster and Camber Adjustments - Chevy

To adjust for caster and camber, loosen the upper sup-

port shaft to crossmember nuts, add or subtract shims as

required and retighten nuts.

NOTE:
Caster and camber can be adjusted in

one operation.

Caster and camber specifications will be found in the

last section of this book.

Chevrolet and Chevy II

The caster angle is adjusted by turning the two niits at

the front of the lower control arm strut rod (figs. 7 and

8).
Shortening this rod will increase caster. Lengthen-

ing will decrease caster.

Camber angle is adjusted by loosening the lower con-

trol arm pivot bolt and rotating the cam located on this

pivot. This eccentric cam action will move lower control

arm in or out, thereby varying camber.

Steering Axis Inclination Adjustment

"Camber" is the outward tilt of the wheel and "steering

axis inclination" is the inward tilt of the knuckle. Cam-

ber cannot be changed without changing steering axis

inclination. Correct specifications willbe found at the

end of this section. If, with the camber correctly ad-

justed, the steering axis inclination does not fall within

the specified limits the knuckle is bent and should be

replaced.

If a new knuckle is installed, caster, camber and toe-in

must be readjusted.

Toe-In Adjustment

Toe-in, the inward pointing of both front wheels, is

checked with the wheels in the straight ahead position. It

is the difference of the distance measured between the

extreme front and the distance measured between the ex-

treme rear of both front wheels. Correct toe-in specifi-

cations will be found at the end of this section.
NOTE:
Toe-in must be adjusted after caster

and camber adjustment.

A. If the equipment being used measures the toe-in of

each wheel individually:

1.
Set the steering gear on the high point, mark 12

o'clock position on the steering shaft and position

the steering wheel for straight ahead driving.

2.
Loosen the clamp bolt at each end of each tie rod

and adjust to the total toe-in as given in the speci-

fications at the end of this book.

B.
If a tram gauge is being used, proceed as follows:

1.
Set the front wheels in the straight ahead position.

2.
Loosen the clamp bolts on one tie rod and adjust

for the proper toe-in as given in the specifications

at the end of this book.

3.
Loosen the clamp bolts on the other tie rod. Turn

both rods the same amount and in the same direc-

tion to place the steering gear on its high point and

position the steering wheel in its straight ahead

position.

C.
After the adjustment has been made:

1.
a. Chevrolet—Position inner tie rod clamp bosses

forward to 90° down to avoid stabilizer link bolt

interference.

b.
Chevelle—Position the tie rod clamp bosses

down to 45?° forward to avoid interference.

c. Chevy II--Position the outer tie rod clamp

bosses forward and not more than 45° up or

down from horizontal to avoid interference.

Inner clamps forward and vertical.

d. Corvette--Position inner tie rod clamps with

bolt horizontal and down. Position outer clamps

with bolt vertical and to the rear.

e. Camaro—Position inner tie rod clamps with

open end of clamp and slot in line. Position

relative to ground unimportant. Position outer

clamps with bolt top and 30° either side of ver-

tical. Position relative to slot unimportant.

RIDING HEIGHT AND COIL SPRING SAG

The following check will quickly determine whether or

CHEVROLET CHASSIS SERVICE MANUAL