1967 CHEVROLET CAMARO light

BUMPERS 14-7

only and the distance between inner upper brace and

frame filled in with shims. Bolts may then be installed

to secure brace to frame.

REAR LICENSE PLATE HOUSING

The rear license plate housing may be removed from

the vehicle by removing the license plate and removing

the retaining screws as shown in Figure 9.

Fig.
9- Rear License Plate Housing

GENERAL DESCRIPTION-CAMARO

The Camaro front and rear bumpers are of a single

piece wrap around design. The front license plate bracket

functions as a bumper support between the valance panel
and bumper. Holes in the underside of bumpers, slightly

inboard of lower bumper bracket bolt, provide for new

jack load rest stud for jacking purposes.

SERVICE OPERATIONS

FRONT BUMPER ASSEMBLY (Fig. 10)

Removal

1.
Raise and support front end of vehicle.

2.
Remove bolts securing bumper support brackets to

frame.

3.
Remove bolts, one on each side at fender extension

panels, securing bumper to outer bumper bracket.

4.
Remove screws and nuts securing license plate

bracket to valance panel and remove bumper from

vehicle.

Disassembly

1.
Remove bolts attaching two support brackets to

bumper.

2.
Remove screw and nut securing license plate bracket

to bumper.

Assembly

Assemble the front bumper following the disassembly

procedure in reverse order. Install all bolts loosely; do

not tighten any bolts until all bolts are installed.

Installation

1.
Position assembled bumper on frame horns aligning

holes in bumper brackets with those in frame.

2.
Loosely install bolts, lock washers, and nuts. .Note
3.
the eight sided adjustment washers (fig. 10) are

placed in the tab of each bumper bracket. Dial the

adjustment washers in the tabs as required to posi-

tion the bumper at the correct mounted height.

Tighten all bolts securely and lower vehicle.

REAR BUMPER ASSEMBLY (Fig. 11)

Removal

1.
Raise and support rear end of vehicle.

2.
Remove bolts securing bumper brackets to frame

and rear fenders.

3.
Remove screws securing license plate bracket to

body and remove bumper from vehicle.

Disassembly

1.
Remove bolts securing four support brackets to

bumper.

2.
Remove rivets securing license plate bracket to

bumper.

Assembly

Assemble the rear bumper following the disassembly

procedure in reverse order. Install all bolts loosely; do

not tighten any bolts until all bolts are installed.

CHEVROLET CHASSIS SERVICE MANUAL

ACCESSORIES
15-6

port thereby supplying vacuum to the Servo unit.

During system operation
the
following events occur:

1.
Car
speed below
20
mph—no function
of the
unit

because
the
rubber drum
has
not rotated
far
enough

to close
the
solenoid points.
No
energizing current

can flow through the solenoid coil.

2.
Car
speed above
20
mph—The tang
on the
rubber

drum
has
closed
the
solenoid points
and
current
is

flowing through
the 40 ohm
resistance wire
to the

solenoid coil. This current
is
not sufficient to "pull

in", the solenoid.

3.
Driver partially presses Engagement Switch—full

voltage flows through
the
solenoid
to
pull
it
into

operation. Solenoid
cam
tension
on the "U"
clip
is

released and the clip grips the rubber drum. Simul-

taneously the vacuum switch operates; applying man-

ifold vacuum
to the
Servo unit which tightens
the

throttle chain. When
the
driver releases pressure

from
the
accelerator pedal
the
unit will position the

throttle
to
maintain the speed
at
the time
of
solenoid
operation.

Driver releases
the
Engagement Switch—current

flows
to the
solenoid through
the 40
ohm wire and

since the solenoid is "pulled in", the reduced current

flow
is
sufficient to hold
it
in position.

The
car
begins
to
ascend
a
hill—car speed drops

slightly (very slightly) and the magnetic force on the

driven disk
of the
speed sensor
is
decreased.
The

disk rotates slightly
(as
would
a
speedometer shaft

because
of
hairspring tension) turning
the
rubber

drum. Since
the "U"
clip
is
gripping
the
drum,
it

moves
the
slide which COVERS
the air
bleed ports

more. With less air bleeding into the Servo, greater

vacuum exists
in it
and the diaphragm moves toward

the vacuum port opening
the
throttle wider.
The

tapered needle moves into the orifice further and the

diaphragm balances
in a
new position with the wider

throttle opening.
Car
speed
has
been maintained

automatically.

1.
Speedometer Cable

Adapter (From

Transmission)

2.
Gasket

3. Speedometer Cable

Adapter
(To

Speedometer)

4.
Adapter
and
Magnet

Housing

5. Rotating Magnet

6. Helical Ramp
7. Field Plate Adjusting

Pinion

8. Adjusting Pinion

Locating Spring

9. Brass Magnetically

Driven Disk

10.
Field Plate

11.
Hair Spring

12.
Hair Spring Keeper

13.
Rubber Drum

Tang
14.
Rubber Drum

1$.
"U"
Shaped Clutch

Spring

16.
Air
Bleed Sleeve

17.
Orifice Tube

18.
Orifice

19.
Orifice Tube Locknut

20.
Clutch
and
Solenoid

Housing

21.
Vacuum Supply Port

(To Servo)
22.
Vacuum Port (To

Intake Manifold)

23.
Vacuum Valve Slide

24.
Solenoid Coil

25.
Solenoid Plunger

Return Spring

26.
Solenoid Cover Gasket

27.
Air Filter

28.
Solenoid Cover

29.
Air Inlets

Fig.
9-
Regulator
-
Exploded

CHEVROLET CHASSIS SERVICE MANUAL

ACCESSORIES 15-7

6. The car begins to descend a hill--car speed in-

creases slightly and the regulator movements oc-

curing above occur again except in reverse. The

rubber drum is turned further against spring tension

and the air bleed orifices are uncovered more. This

bleeds more air to the Servo reducing the vacuum in

the unit. The diaphragm moves away from the

vacuum port, closes the throttle slightly, and with-

draws the tapered needle from the vacuum orifice.

With the orifice enlarged, the increased vacuum

counteracts the increased air bleed and the dia-

phragm finds a balance again at a reduced throttle

opening.

7.
Driver accelerates by pressing accelerator pedal-

car speed increases and the system responds by

moving the diaphragm to decrease throttle opening.

Since a bead chain is used, the chain merely relaxes

and has no effect on throttle operation. After the

driver releases pressure from the pedal, the throttle

will close until car speed decreases to the pre-set

speed. At that point the Regulator bleeds less air

to the Servo which opens the throttle enough to

maintain the pre-set speed. The system returns to a

stable condition.

8. Driver desires higher controlled speed, presses ac-

celerator until new speed is reached, and depresses

Engagement Switch fully and releases button--speed

sensing assembly tries to turn in a direction that

would decrease the throttle opening until the driver

fully depresses the Engagement Switch. Then the

current is cut off to the solenoid which retracts; the

solenoid nose expands the "U" clip releasing its

grip on the rubber drum. The drum and disk as-

sembly then rotates to a new position because of the

higher car speed. When the solenoid retracts, it also

shuts off vacuum to the Servo and opens the vacuum

port to atmospheric pressure within the Regulator

thereby bleeding down the Servo toward idle throttle

position. As the driver releases the Engagement

Switch, the contacts cause "pull in" and "hold in" of

the solenoid respectively. The system is engaged to
maintain the car speed at the time of Engagement

Switch release.

9. Driver desires lower cruising speed, presses En-

gagement Switch fully, waits until car speed de-

creases to desired speed then releases Switch--when

the Engagement switch is fully depressed the sole-

noid is de-energized causing the vacuum switch to

bleed down the Servo to idle throttle position and the

"U"
clip of the idle bleed valve is released from the

rubber drum. The drum and disk assembly is free

to rotate to a position which corresponds to vehicle

speed as the car slows. When the driver releases

the Engagement Switch, the unit "pulls in" and "holds

in" in the normal manner. The air bleed valve is

clutched to, the rubber drum at the car speed during

switch release. Vacuum is again applied to the

Servo and throttle control is assumed by the Regu-

lator to maintain the car speed at the time of switch

release.

10.
With system in operation, driver applies brakes--

simultaneously the Vacuum Release and Electric

Release Switches operate. The Vacuum Switch

bleeds air into the Servo through the air bleed line

coming from the Regulator. The vacuum is reduced

in the Servo and the throttle returns to idle position.

The Electric Release Switch cuts off power to the

entire system and the solenoid is de-energized. If

the driver removes his foot from the brake pedal the

Electric Switch again feeds voltage to the Engage-

ment Switch and the Vacuum Switch seals the air

bleed line. If the vehicle speed is above 20 mph

when this occurs, reduced voltage will flow to the

solenoid through the 40 ohm wire which will not be

sufficient to "pull in" the unit. If vehicle speed is

below 20 mph no current will flow since the tang

on the rubber drum has opened the low limit switch

points in the Regulator. In either case, after de-

pressing the brake pedal, the system will not con-

trol car speed until the driver operates the engage-

ment switch above 20 mph.

SERVICE OPERATIONS

The components of the Cruise Master system are de-

signed to be replaced should they become inoperative.

The Regulator is calibrated in such a manner during

manufacturing that overhaul operations are impractical.

However, one adjustment may be made to the Regulator to

correct speed drop or increase at the time of

engagement.

BRAKE RELEASE SWITCHES

ELECTRIC

Service — An inoperative switch must be replaced.

Switch replacement is identical to standard brake lamp

switch replacement.

Adjustment- The brake switch plunger must clear the

pedal arm when the arm is moved 1/4 inch measured at

the switch (Figure 7).

VACUUM

Service
—
An inoperative (sticking, plugged, or leaking)

switch must be replaced. Switch replacement is similar
to brake switch replacement. Be certain that the hose to

the switch is connected firmly and is not cracked or

deteriorated.

Adjustment- The brake switch plunger must clear the

pedal arm when the arm is moved 5/16 inch measured at

the switch (Figure 7).

ENGAGEMENT SWITCH

Service

replacement.
The engagement is serviced only by

Removal

1.
Pry the engagement button out of the turn signal knob

with a small thin bladed screwdriver (Figure 2).

2.
With a small hook or long nosed pliers, remove the

switch retaining ring.

3.
.Pull switch outward utilizing the slack in the wiring

harness.

4.
With a small soldering iron, unsolder the wires and

resolder them to the correct terminals of the re-

placement switch.

CHEVROLET CHASSIS SERVICE MANUAL

ACCESSORIES 15-9

Adjustment- Adjust the bead chain so that it is as tight

as possible without holding the throttle open when the

carburetor is set at its lowest idle throttle position.

When connecting the bead chain (engine stopped) manually

set the fast idle cam at its lowest step and connect the

chain so that it does not hold the idle screw off the cam.

If the chain needs to be cut, cut it three beads beyond the

bead which pulls the linkage.

REGULATOR

Service - A defective regulator, that is one which is not

simply out of adjustment, must be replaced. During re-

placement, check the hoses which connect to the regulator

and replace any which are cracked or deteriorated.

Air Filter

The air filter located in the solenoid cover should be

cleaned and re-oiled at engine oil change intervals.

1.
Snap the solenoid cover off.

2.
Remove the filter and wash it in kerosene or mineral

spirits. Squeeze it dry and wet with SAE 10 engine

oil.
Squeeze out excess oil and reinstall into the

cover.

3.
Attach the cover with neoprene seal to the solenoid

housing. Be certain that the cover fits tightly to the

housing.

One regulator adjustment is possible: Engagement-

Cruising Speed Zeroing (to remove any difference be-

tween engagement and cruising speed).

NOTE:
No regulator adjustment should be

made, however, until the following items have

been checked or serviced:

1.
Bead chain properly adjusted.

2.
All hoses in good condition, properly attached, not

leaking, not pinched or kinked.

3.
Regulator air filter clean and properly oiled.

4.
Electric and vacuum release switches properly

adjusted.

Engagement—Cruising Speed Zeroing

If the cruising speed is lower than the engagement

speed, loosen the orifice tube locknut and turn the tube

outward; if higher, turn the tube inward. Each 1/8 turn

will alter the engagement-cruising speed difference one

mph. Tighten the locknut after adjustment and check the

system operation at 50 mph.

ELECTRICAL SYSTEM CHECK OUT

1.
Check fuse and connector.

2.
Check electric brake switch as follows: Unplug con-

nector at brake switch. Connect ohmmeter at points

A and B on brake switch. The ohmmeter must indi-

cate infinity when the brake pedal is depressed and

continuity when pedal is released. The cruise re-

lease brake switch (electric) is adjusted as is the

standard stop light brake switch. Replace electric

brake switch if needed.

3.
Check engagement switch and connecting wiring as
follows: Unplug push button control connector

(brown, blue, black) at electrical wiring harness con-

nector and perform the following tests. (See Fig-

ure 10)

Test #1
—
Connect ohmmeter between terminal #1 (brown

wire) and terminal #2 (blue wire). Continuity shall be

maintained until switch is depressed all the way in.

Test #2
—
Connect ohmmeter between terminal #1 (brown

wire) and terminal #3 (black). No continuity shall be

shown; however, when the button is depressed halfway,

continuity shall be indicated. When the button is pressed

all the way down, no continuity shall be shown.

Test #3 — Connect ohmmeter between terminal #2 (blue

wire) and terminal #3 (black). Button released, no con-

tinuity; however, when the button is depressed partially

and fully, continuity shall be shown.

4.
Check regulator solenoid coil, low-speed switch, and

wiring harness as follows:

a. Disconnect engagement switch wire harness con-

nector from the main wire harness connector

(brown, blue, and black wires). Connect ohm-

meter
'
between point C (blue wire in main wire

harness) and ground. (Make sure the regulator is

well grounded to chassis.) The ohmmeter should

read 45 ohms ± 2 ohms. If a resistance of

greater value is shown, then disconnect the con-

nector from the regulator and measure the re-

sistance of the blue wire from point C to D. It

should measure 40 ohms. Check the resistance

from point E (vertical bar of terminal forming T)

to ground. It should measure 5 ohms ± 1/4 ohm.

Replace either the wiring harness or solenoid as

needed if greater values are indicated. The black

harness wiring from point F to G should also be

checked for continuity.

ENGAGEMENT SWITCH TEST

BUTTON POSITION

Cruise (released)

Engage (partially depressed)

Trim (fully depressed)
TERMINALS

1 TO 2

closed

Closed

open
1 TO 3

open

closed

open
2 TO 3

open

closed

closed

SERVO AND VACUUM SYSTEM CHECK OUT

To determine the condition of the diaphragm, remove

hoses from power unit and apply 14 inches of vacuum to

either vacuum tube opening (seal the other opening) and

hold in for one minute. The vacuum shall not leak down

more than 5 inches of vacuum in one minute. If leakage

is detected, replace servo. To utilize engine as a vac-

uum source, proceed as follows:

1.
DISCONNECT SERVO $EAD CHAIN and hoses from

servo and connect engine vacuum directly to vacuum

servo fitting (fitting in middle of servo). Seal the

servo unit opening.

2.
Note position of servo diaphragm.

3.
Start engine - the diaphragm should pull in.

4.
Clamp off engine vacuum supply line and check for

leakage. '

The cruise release brake switch (vacuum) and connecting

hoses can likewise be checked using a vacuum pump.

CHEVROLET CHASSIS SERVICE MANUAL

SPECIFICATIONS 3

REAR SUSPENSION

REAR AXLE

SECTION 4

CHEVROLET, CAMARO, CHEVELLE AND CHEVY II

Gear Backlash . . (.005"-.008" preferred) .003"-.010"

Pinion Bearing Preload (in. lbs.)

New 20-30

Used . 5-15

Lubricant Capacity

Large Carrier 4-1/2 pints

Small Carrier 3-1/2 pints

Bolt Torques (Ft Lbs.)

Carrier Cover 20

Ring Gear 50

Differential Bearing Caps 55

Filler Plug . . 20

Differential Pinion Lock . 20
CORVETTE

Gear Backlash . (.
005"-,
008"
preferred). . .003"-.010"

Pinion Bearing Preload (in. lbs.)

New 20-25

Used 5-15

Lubricant Capacity 3-3/4 pints

Bolt Torques (Ft Lbs.)

Carrier Cover 50

Ring Gear . 50

Differential Bearing Caps . 55

Filler Plug 20

Differential Pinion Lock 20

Type

Heavy Duty Axle

Light Duty Axle

Bolt Torque (ft lbs.)

Spring Retainer

Control Arm Upper

Front Bracket

Upper Bushings

Lower Bushings

Shock Absorber

Upper Nut

Upper Bracket

Lower Nut

Spring Shackle

Front

Rear

Tie Rod

Attaching Nuts

Stud to Axle Bracket

Universal Joint

Companion Flange

Transmission Yoke

Wheel Stud Nuts

Axle Drive Shaft

to Spindle

to Yoke
Chevrolet

4-Link
System

3-Link
System

25

55

70

110

15

65

65

110

15

65
Chevelle

4-Link
System

80

80

12

65

15

65
Chevy H

Semi-Elliptic

Tapered

Single Leaf

40

10

10

50

55

50

15

65
Camaro*

Semi-Elliptic

Tapered

Single Leaf

50

8

10

45

100

50

15

65
Corvette

Independent

Three-Link

System

65

50

35

15

15

75

75

15

@ Station Wagon all
4-Link
System

CHEVROLET a
SfRVK

SPECIFICATIONS 25

BODY AND CHASSIS ELECTRICAL

SECTION
12

LAMP USAGE
CANDLE

POWER
BULB

NUMBER

Headlamp Unit

Chevrolet, Chevelle & Corvette

Outer - High Beam

Outer - Low Beam

Inner -• High Beam only

Chevy H

High Beam . .

Low Beam

Parking Lamp and Directional Signal

All Exc. Camaro

Camaro

Tail, Stop and Directional Signal (Exc. Bel Air)

Backing Lamp ••...,

Instrument Illumination Lamps

Chevrolet & Camaro ,

Chevelle and Chevy n

Corvette

Temperature Indicator

Chevrolet & Camaro

Chevelle and Chevy II .............

Oil Pressure Indicator

Chevrolet & Camaro .............

Chevelle and Chevy II

Generator Indicator

Chevrolet & Camaro .

Chevelle and Chevy n ,

Hi-Beam Indicator

Chevrolet & Camaro <

Chevelle and Chevy II

Corvette , . • . ,

Directional Indicator

Chevrolet & Camaro

Chevelle & Chevy II . .

Corvette . .

Cigarette Lighter Lamp

Corvette .

Ignition Lock Lamp

Chevrolet . . .

Corvette . . .

Heater or A/C Control Panel

Chevrolet, Chevelle, Chevy n & Camaro . . .

Corvette . . .

Glove Box Lamps

Chevrolet, Chevelle, Chevy n & Camaro . . .

Corvette . . . . .

Dome and Courtesy Lamps

Cartridge Type (AU)

Bayonet Type (Exc. Corvette) . . .

Corvette ,

Convertible . .
37 1/2 Watts

55 Watts

37 1/2 Watts

55 Watts

45 Watts

4-32

4-32

4-32

Special Fiber

1

2

3

2

3

12

6

6

6
Optic
4002

4002

4001

6012

1157

1034-A

1157

1156

194

1895
.

1816

194

1895

194

1895

194

1895

194

1895

1445

194

1895

1816

1445

Wiring

1445

1895

1893

1895

1893

211

89,
212

90

631

CHEVROLET CHASSIS SERVICE MANUAL

SPECIFICATIONS 26

LAMP USAGE (Cont'd.)
CANDLE

POWER

1

6

4

2

3

2

2

3

2

3

15

15
BULB

NUMBER

1445

212

67

1893

1816

194

1895

1816

257

1816

1003

93
Seat Separator-Compartment Lamp . . . . .

-Courtesy Lamp •

License Plate Lamp . .

Radio Dial Lamp

Chevrolet, Chevelle, Chevy n & Camaro

Corvette

Brake Alarm Lamp

. Chevrolet & Camaro . . .... . .

Chevelle & Chevy n . . . . .'. ;v . . . .

Corvette . . . . . . . .

Headlamp Mqtor Warning Lamp (Flashing) .

Clock Lamp (Corvette) .''> ....

Luggage Compartment Lamp. . ... . . . •

Underhood

FUSES AND CIRCUIT BREAKER

A circuit breaker in the light control switch protects

the headlamp circuit, thus eliminating one fuse. A

separate circuit breaker protects the power window,

seat and top circuits. On Corvettes the headlamp motor
circuit is also protected by a separate circuit breaker.

Where current load is too heavy, the circuit breaker

rapidly opens and closes, protecting the circuit until

the cause is found and eliminated.

louses located in the Fuse Panel under the instrument panel are:

Wiper (Chevrolet, Chevelle, and "F" Car) 3AF/AGC 20 Amp.

Back-up Lamp and Gauges. . . 3AG/AGC 10 Amp.

Heater - Air Conditioning 3AG/AGC 25 Amp.

Radio 3AG/AGC 10 Amp.

Radio - Wiper (Chevy II and Corvette) 3AG/AGC 20 Amp.

Instrument Lamps 3AG/AGC . 4 Amp.

Stop and Tail Lamps ........ t 3AG/AGC 20 Amp.

Clock, Lighter, Courtesy Lamps, and Hazard Warning 3AG/AGC 20 Amp.

In-Line Fuses:

Air Conditioning High Blower Speed Fuse located in wire running

from horn relay to A/C Relay

Comforton and Four Season SAE 30 Amp.

Universal & All Weather (Chevy H) SAE 20 Amp.

Fusible Links: ,

Pigtail lead at battery positive cable (except Corvette) 14 gage brown wire

Molded splice at Solenoid "Bat" terminal (Corvette only) 14 gage brown wire

Molded Splice Located at the horn relay 16 gage black wire

Molded splice in Voltage Regulator #3 terminal wire 20 gage orange wire

Molded splice in Ammeter circuit (Both sides of meter) 20 gage orange wire

CHEVROLET CHASSIS SERVICE MANUAL