1967 CHEVROLET CAMARO engine

ELECTRICAL-BODY
AND
CHASSIS
12-61

R.H. FENDER

LAMP (1.6600)

R.H. PARK &
DIR.

S1G. LAMP.

L.H. PARK &
DIR.

SIG. LAMP

L.H. FENDER

LAMP (16600)

Fig.
104 - Front Lighting & Engine Compartment — Chevrolet

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY
AND
CHASSIS
12-66

R.H. PARK

&DIR.
SIG. LP

L.H. PARK

& DQU SIG.
LP,
GROUND
TO

FENDER REINF

BRAKE FLUID

ill WARNING SW.

Fig.
109 - Front Lighting and Engine Compartment — (Chevelie)

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-70

20DBL

16BRN

20LBL

20B -

12R—

Fig.
113 - Front Lighting & Engine Compartment — Chevy H

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-74

R.H. PARK&

DIR. SIG. LAMP

\L2 BRNf

18 Y—

12 BRN

18 LBL4-

18DBL

12 P

18 LG

18 P

DASH

PANEL

RESISTOR
TEMP.

SENDER

R.H. LIMIT SW.

L.H. LIMIT SW.

GY/B,

16 DBL

BRK FLUID

WARNING

16
W

20 OR

20 B
BACK-UP

LMP.
SW,

20 B

16 B/W

18 T
NEU.

SFT.

SW. I

RPO

M35

4BRN/W

16 B

M18DG

4 OR
DIR. SIG.
&
DIR.

SIG. LAMP

Fig. 117 - Front Lighting & Engine Compt — Corvette

CHEVROLET CHASSIS SERVICE MANUAL

SECTION 13

RADIATOR AND GRILLE

INDEX

Page Page

General Description 13-1 Repairs 13-4

Radiator and Shroud-All Vehicles (Except Corvette) . . . . 13-1 Installation 13-4

Removal 13-1 Grille Assembly - Chevy II 13-4

Installation 13-1 Removal . 13-4

Radiator and Fan Shroud - Corvette . . . . 13-1 Repairs 13-5

Fan Shroud Replacement 13-1 Installation . 13-5

Aluminum Radiator 13-1 Grille Assembly - Corvette 13-5

Copper Radiator . 13-1 Removal . . . . 13-5

Grille Assembly - Chevrolet 13-2 Installation ....*... 13-5

Removal 13-2 Grille Assembly - Caxnaro 13-5

Repairs 13-3 Removal 13-5

Installation 13-3 Repairs . 13-6

Grille Assembly - Chevelle 13-3 Installation . . 13-6

Removal 13-.Q

GENERAL DESCRIPTION

Radiator assemblies are attached by cap screws either the radiator and shroud are basically the same for each

to the radiator support or radiator shroud, depending on vehicle,

the engine installation of each vehicle. The Camaro fan

Shroud is mounted in two bottom slots and secured by one NOTE: Refer to the Fisher Body Service Man-

bolt at the top. Removal and installation procedures for ual for Body, Section IX for Sheet Metal, Section

14 for Bumpers, and Section 1A for Air Condi-

tioning information when required.

SERVICE OPERATIONS

RADIATOR
AND
SHROUD—ALL VEHICLES
NOTE: Reach upper two shroud bolts from top,

(EXCEPT CORVETTE)
between hood and radiator support. Reach lower

4 by reaching around front edge of open hood.

Removal

1.
Drain radiator. 4.- Remove shroud carefully (tilt rearward, then lift up

2.
Disconnect inlet and outlet radiator hoses, and Pow- to clear fan blades).

erglide cooler lines if vehicle is so equipped. 5. Reverse procedure to install, fill cooling system and

3.
Remove radiator and shroud attaching screws and lift check for leaks.

radiator and shroud out of vehicle.

Aluminum Radiator

Installation

NOTE:
Refer to Figures 1 through 5 for radi- Removal and Installation

ator fan and shroud assembled positions for each 1. Remove shroud as previously outlined.

vehicle. Reverse removal procedures, fill cool- 2. Disconnect lower raciiator hose at either end.

ing system and check for leaks. 3. Remove radiator upper mount bracket bolts and

bracket, then lift radiator from vehicle.

RADIATOR AND FAN SHROUD-CORVETTE 4. Reverse procedure to install.

Fan Shroud Replacement (Fig. 4) Copper Radiator

1.
Drain radiator and open hood. (Install a bolt in hole

of hood support bracket for safety purposes.) Removal and Installation

2.
Disconnect upper radiator hose and supply tank hose 1. Remove hood panel assembly after scribing bracket

at radiator connection. location.

3.
Remove shroud bolts. 2. Drain radiator and disconnect radiator hoses.

CHEVROLET CHASSIS SERVICE MANUAL

RADIATOR AND GRILLE 13-6

VIEW A
VIEW B

V-8 ENGINE
RADIATOR

FAN GUARD

(L-6 ENGINE)

VIEW

Fig.
5 - Radiator and Shroud - Camaro

grille header panel, catch support bracket, and radi-

ator support and remove hood catch.

Remove screws from each headlamp bezel and re-

move bezels from vehicle. Remove headlamps.

Remove hardware attaching hood catch support to

radiator support, valance panel, and lower grille

and remove catch support from vehicle.

Disconnect parking lamps. Remove rivets securing

center grille to upper and lower grilles and remove

center grille from vehicle. If necessary, replace

name plate.

Remove screws and rivets securing grille header

panel to fenders and upper grille and remove header

panel.

Remove hardware attaching upper and lower grilles

to vehicle and remove upper and lower grilles.

Remove screws attaching valance panel to fenders,

and fender extensions and retractable headlamp door
assemblies if so equipped, and remove valance panel

from vehicle.

10.
If vehicle is equipped with retractable headlamp cov-

ers,
disconnect electrical plugs. Remove screws at-

taching headlamp bracket assemblies to radiator

support and remove assemblies from vehicle.

Repairs

If any components removed are undamaged, they may

be used for the new grille installation. Where rivets were

removed, make new attachments using screws and nuts,

patent clips, or rivets.

Installation

Install grille and related components following the re-

moval procedure in reverse order. Refer to torque spec-

ifications in rear of manual for correct torque values.

CHEVROLET CHASSIS SERVICE MANUAL

ACCESSORIES 15-2

GENERAL DESCRIPTION

The Cruise Master is a speed control system which

employs engine manifold vacuum to power the throttle

Servo unit. The Servo moves the throttle when speed

adjustment is necessary by receiving a varying amount

of bleed air from the Regulator unit. The Regulator

varies the amount of bleed air through a valve system

which is linked to a speedometer-like mechanism. The

speedometer cable from the transmission drives the

Regulator, and a cable from the Regulator drives the

instrument panel speedometer. The. engagement of the
Regulator unit is controlled by an Engagement Switch

located at the end of the turn signal lever. Two brake

release switches are provided: an Electric Switch dis-

engages the Regulator unit and a Vacuum Switch de-

creases the vacuum in the Servo unit to quickly return

the throttle to idle position.

The operation of each unit of the system and the

operation of the entire system under various circum-

stances is described below. Figure 1 shows the location

of the system components within the vehicle-

COMPONENT OPERATION

ENGAGEMENT SWITCH

This switch, located within the turn signal knob, has

three positions. In the fully released position, the switch

passes current through resistance wire to effect a "hold

in" magnetic field in the Regulator solenoid. This cur-

rent is sufficient only to hold the solenoid in place once

it has been actuated by the "pull in" circuit. Depressing

the button partially allows current to flow to the Regu-

lator solenoid at full voltage which causes the solenoid

to pull in. Depressing the button fully opens the circuit

to both the resistance and standard solenoid feed wires

and the solenoid becomes de-activated.

During vehicle operation the three switch positions

have the following functions:

Released

a. System not engaged: No function of the system

will occur although a small current is flowing

through the solenoid via the resistance wire (at

vehicle speeds over 20 mph).

b.
System engaged: The small current flowing

through the resistance wire is holding the solenoid

in the engaged position.

^r-WIRE RELIEF LUG

1 ^-#2-BLUE WIRE

L'3.BLACK WIRE
X /-TURN SIGNAL LEVER

SWITCH—^
^SN

RETAINING RING-^ %^

BUTTON -^

Fig.
2 - Cruise Master Engagement Switch
Partially Depressed

Full voltage is applied to the solenoid (vehicle speed

over 20 mph) which sets the Regulator to maintain the

vehicle speed at the time of Regulator engagement.

Fully Depressed

No electricity flows to the solenoid and the Regulator

is inactive. This position is used by the driver when he

desires to raise or lower his controlled speed. He may

accelerate to his new speed, press the button fully (Regu-

lator releases previously set speed) and release the but-

ton. Upon releasing the button, it passes through the

partially depressed position and the solenoid is "pulled

in", then into released position which provides "hold in"-

current. The driver may also press the button fully with

no pressure on the accelerator pedal. In this case the

regulator releases control of the throttle which returns

to idle and the car slows. When the button is released

the solenoid is pulled in and held in respectively and the

regulator resumes speed control at the speed of the

vehicle during the moment of button release (at vehicle

speeds over 20 mph).

LOCK
NUT

ORIFICE
TUBE

AND
CONNECTOR

ASSEMBLY

AIR FILTER AND

SOLENOID HOUSING COVER

Fig. 3 - Regulator Unit

CHEVROLET CHASSIS SERVICE MANUAL

ACCESSORIES 15-3

CONTROLLED AIR SUPPLY

FROM REGULATOR
DIAPHRAGM

SPRING

METERING ROD

VARIABLE ORF1CE

ENGINE AAANIFOLD VACUUM

FROM REGULATOR VACUUM VALVE
BEAD CHAIN

VACUUM CHAMBER —*
MOUNTING SCREW

Fig.
4- Servo Unit

BRAKE RELEASE SWITCHES

Two brake release switches are employed in the Cruise

Master System. When the brake pedal is depressed, an

Electric Release Switch cuts off the voltage supplied to

the engagement switch, hence cuts off power to the Regu-

lator unit. The Regulator is then disengaged and requires

Engagement Switch operation to return it to operation.

A Vacuum Release Switch operates simultaneously with

the electric release switch whenever the brake pedal is

depressed. This switch opens a port to atmospheric

pressure which rapidly bleeds down the vacuum in the

Servo unit thereby returning the throttle to the idle

position.

SERVO UNIT

The Servo unit is a vacuum actuated, variable position

diaphragm assembly which operates the carburetor throt-

tle when the system is in operation (fig. 4). It is powered

by engine intake manifold vacuum and operates the throt-

tle linkage via a bead chain. The Servo has two ports on

the sealed side of the diaphragm housing: one is supplied

manifold vacuum, and the other is connected to a variable

air bleed in the Regulator Unit. The vacuum port is

located at the center of the unit and the air bleed port

is near the outer wall. When vacuum is applied to the
center port, atmospheric pressure moves the diaphragm

which pulls on the bead chain opening the carburetor

throttle. As the diaphragm moves, it positions a tapered

needle within an orifice in the vacuum port so that as the

diaphragm moves toward the port, the orifice becomes

smaller; and as it moves away from the port, the orifice

becomes larger.

The air bleed port serves to supply a variable quantity

of air to the diaphragm chamber which causes the dia-

phragm to attain a balanced state (between the force of

the atmospheric pressure to chamber pressure differ-

ential and the force of the diaphragm and throttle return

springs). In operation then, the following events occur:

Vacuum is applied to the center port and the diaphragm

moves toward the port. The tapered needle restricts

the vacuum port more and more as it moves into the

orifice. If no air was allowed to bleed into the chamber,

the diaphragm would move until it contacted the housing,

however, the Regulator meters bleed air into the chamber

and the diaphragm reaches a point at which the air is

bled out of the chamber through the vacuum port orifice

as fast as it enters the air bleed port. If the Regulator

begins to supply less bleed air, (vehicle speed decreas-

ing) the vacuum in the chamber increases and the dia-

phragm moves toward the vacuum port. In so doing, the

tapered needle closes the vacuum port orifice even more

CHEVROLET CHASSIS SERVICE MANUAL