1967 CHEVROLET CAMARO ABS

ELECTRICAL-BODY AND CHASSIS 12-40

Fig.
54 - Seat Separator Instrument Console

consists of a single red light which will indicate an over-

heated engine condition.

Engine Sender Unit Replacement

1.
Drain engine cooling system to a level below unit.
2.
Remove sender unit (located in cylinder head near

an exhaust port on L-6 engines and in the inlet mani-

fold near water pump housing on V-8 engines).

3.
Replace unit, refill cooling system and check opera-

tion of unit.

DIRECTIONAL SIGNAL

Directional signal assemblies provide as standard pro-

duction equipment a lane changing feature and hazard

warning system on all model applications. Two different

design switches are used as shown in Figure 55. Major

difference between the two units is that one type has can-

celling and detent springs which are serviceable, other-

wise both units are not repairable and must be replaced

as an assembly in service.

Due to the integral design relationship of the signal

switch and the energy absorbing steering column, refer-

ence should be made to Steering, Section 9 of this manual
whenever any service operations are performed on the

steering column. The directional signal switch replace-

ment procedures covered in this section are intended to

supplement the detail service operations outlined in Sec-

tion 9.

Special note should be taken of the fact that different

signal flasher units are used in Chevrolet models depend-

ent on the number of lamps to be operated. The hazard

warning unit, even though an integral component of the

directional switch assembly, requires the installation of

an additional flasher unit in the fuse panel capable of op-

CHEVROtET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-50

SERVICE OPERATIONS

MOTOR SECTION

DISASSEMBLY

NOTE:
Motor section
may be
disassembled

independently
of
the gear box.

Brush Plate and Circuit Breaker Removal

1.
Scribe
a
reference line along the side of the casting

and end cap to insure proper re-assembly.

2.
Remove the two motor thru bolts.

3.
Feed exposed excess length
of
motor leads thru the

casting grommet
and
carefully back
the
case
and

field assembly plus
the
armature away from
the

casting (fig. 76).

NOTE:
It may be
necessary
to
remove
the

armature end play adjusting screw and insert
a

rod thru
the
opening
in
order to apply pressure

against the end of the armature.

4.
Unsolder
the
black lead from circuit breaker
(fig.

77).

5.
Straighten
out the 4
tabs that secure the brush plate

to the field coil retainers (fig. 77).

CAUTION:
Be
careful
not to
break
any of
the

retainer tabs.

6. Install
"U"
shaped brush retainer clip over brush

holder that has brush lead attached to circuit breaker

(fig. 78).

7.
Holding
the
opposite brush from that retained in Step

6, carefully lift
the
brush holder
off the
mounting

tabs
far
enough
to
clear
the
armature commutator

(fig. 78).

8. Allow
the
brush, held
in
Step
7, to
move out
of its

holder. Remove
the
brush spring
and
lift the brush

holder
off
the armature shaft.

Armature Removal

1.
Follow Steps
1
thru
8
under brush plate removal.

2.
Lift armature out
of
case and field assembly.

3.
Remove thrust ball from
end of
armature shaft
as
PUMP

ASSEMBLY

CAM SLOT

DRIVE PLATE
AND

ASSEMBLY

RELAY SWITCH

ASSEMBLY
WASHER PUMP

DRIVE
PIN

Fig.
75
-
Wiper and Washer
Pump
Mechanism

required and save
for
reassembly.

NOTE: Thrust ball
may be
easily removed

with
a
magnet.

MOUNTING

GROMMET

WASHER PUMP COVER

RETAINING RING

STAKE MARKS -

CASE
TO
FIELD

LAMINA
(4
PLACES)

Fig. 74 - Depressed Park 2-Speed Wiper
Fig. 76 - Wiper Motor Separation

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-52

GEAR MECHANISM

NOT IN PARK

RELAY SWITCH ATTACHING SCREW

Fig.
81 -
Drive Gear not
in
Park Position

TERMINAL BOARD

1 2 3

RELAY LEADS (RED)

SOLDER TO NO. 1 TERMINAL

RELAY
COIL-RED

TAN-SOLDER TO

SAME RELAY SWITCH TERMINAL WITH RED COIL LEAD

BLACK WITH PINK STRIPE
ASSEMBLY

1.
If new field and case assembly is being installed,

splice the black and black with pink stripe leads of

the new field with the corresponding leads of the

wiper.

2.
Install the rubber thrust disc, steel thrust disc and

felt lubricating washer in the case assembly bearing

in the order indicated.

3.
Lubricate end of armature shaft that fits in case

bearing. Next, install thrust ball in end of shaft.

4.
Assemble armature in the case and field assembly.

5.
Position the partially assembled brush plate over the

armature shaft far enough to allow re-assembly of

the remaining brush in its brush holder;- then position

the brush plate assembly on the mounting tabs in the

position shown in Figure 78.

NOTE: Circuit breaker ground lead will not

reach circuit breaker terminal if brush plate is

positioned wrong.

6. Center the brush plate mounting holes over the

mounting tabs and bend the tabs toward the brush

holders as required to secure the brush plate in

position.

CAUTION: Be sure tabs are centered in brush

plate mounting holes.

7.
Remove brush retainer clips and resolder circuit

breaker ground lead to circuit breaker. Refer to

Figure

8. If new case and field assembly'is used, scribe a line

on it in the same location as the one scribed on the

old case. This will insure proper alignment of the

new case with the scribed line made on the housing

(Step
1
under Brush Plate Removal).

9. Position armature worm shaft inside the housing and,

using the scribed reference marks, line up as near

Fig.
82 - Relay Assembly Wiring
Fig.
83 -
Terminal Board Resistor

CHEVROLET CHASSIS SERVICE MANUAL

BUMPERS 14-2

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

3.
Tighten all bolts securely, connect parking lamp wir-

ing, and lower vehicle.

REAR BUMPER ASSEMBLY (Fig. 2)

Removal

1.
Raise and support rear end of vehicle.

2.
Disconnect rear license plate lamp wiring.

3.
On Caprice models, disconnect back-up lamp wiring.

4.
Remove center face bar to frame attaching bolts lo-

cated behind license plate door.

5. Remove bolts from each side "attaching bumper

brackets and braces to frame.

6. Remove bumper from vehicle.

Fig.
1 -
Front Bumper Assembly
-
Chevrolet

FILLER

STAPLE

VIEW
B \ ^7 ^^ B

ALL EXCEPT STATION WAGON

Fig. 2 - Rear Bumper Assembly - Chevrolet

Disassembly

1.
Remove license plate lamp.

2.
On Caprice models, remove

assemblies.

Remove bolts

3.
back-up lamp

each bumper brace to
retaining

bumper.

4.
Remove bolts retaining each bumper bracket to

bumper and separate sections of face bar at joints.

5.
The license plate door (sedan models) and bumper

pads (station wagon models) may be removed by re-

moving the attaching parts shown in Figure 2.

Assembly

On Caprice models, attach both back-up lamps to cen-
ter face bar and tighten bolts firmly. Assemble the rear

bumper following the disassembly procedure in reverse

order. Except for back-up lamp attachments on Caprice

models, install all bolts loosely; do not tighten any bolts

until all bolts are installed.

Installation

1.
Position bumper assembly on vehicle aligning holes

in braces and mounting brackets with those in frame,

2.
Loosely install bolts, lock washers, and nuts includ-

ing center face bar to frame bolts behind license

plate door. Note that eight sided adjustment washers

(fig. 2) are placed in the tab of each bumper mounting

bracket. Dial the adjustment washers in the tabs as

CHEVROLET CHASSIS SERVICE MANUAL

BUMPERS 14-3

required to position the bumper at the correct

mounted height. ,

3.
Tighten all mounting bolts securely and connect li-
cense plate lamp wiring. On Caprice models, con-

nect back-up lamp wiring. Lower vehicle.

GENERAL DESCRIPTION-CHEVELLE

The new front bumper is of a one piece design with the

parking and turn signal lamp assemblies attached to each

outboard end of the bumper.
The rear bumper is also of a one piece design with

provisions for rear gas fill. The back-up lamp assem-

blies are attached near the center of the bumper.

SERVICE OPERATIONS

FRONT BUMPER ASSEMBLY

Removal

1.
Raise and support front of vehicle.

2.
Disconnect parking lamp wiring. -

Fig.
3 - Front Bumper Assembly - Chevelle

Disassembly

1.
Remove bolts attaching braces and brackets to

bumper.

2.
Remove bolts from each parking lamp assembly and

remove parking lamps from bumper.

Assembly

Attach both parking brake lamp assemblies to front

bumper and tighten bolts firmly. Assemble the front

bumper parts by following the disassembly procedure in

reverse order. Except for the parking lamp attachments,

install all bolts loosely; do not tighten any bolts until all

bolts are installed.

Installation

1.
Position the front bumper on the frame horns align-

ing holes in brackets and braces with those in the

frame.

2.
Loosely install bolts, lock washers, and nuts. Note

that eight sided adjustment washer (fig. 3) is placed

in the tab of each mounting bracket. Dial tjie adjust- .

ment washers in the tabs as required to position the

bumper at the correct mounted height.

3.
Tighten all mounting bolts securely, connect the

parking lamp wiring, and lower front of vehicle.
3.
Remove bolts retaining the bumper brackets and

braces to the frame.

4.
Remove bumper assembly from vehicle.

ADJUSTMENT

WASHER

Fig.
4-Rear Bumper Assembly - Chevelle

REAR BUMPER ASSEMBLY (Fig. 4)

Removal

1.
Raise rear end of vehicle.

2.
Disconnect rear license plate lamp and back-up lamp

wiring.

3.
Remove bolts, located behind license plate door, at-

taching face bar reinforcement to frame.

4.
Remove four bolts retaining bumper brackets and

braces to frame.

5. Remove bumper from vehicle.

Disassembly

1.
Remove license plate lamp and back-up lamps from

bumper.

2.
Remove brackets and braces at each end of bumper.

3.
Remove license plate door.

4.
Remove rivets attaching bracket at center of bumper.

Assembly

Attach license plate lamp and back-up lamp assemblies

to bumper; tighten bolts firmly. Assemble the bumper

parts by following the disassembly procedure in the re-

verse order. Except for the license plate lamp and back-

up lamp attachments, install all bolts loosely; do riot

CHEVROLET CHASSIS SERVICE MANUAL

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 15-11

12 VOLTS D.C.
ELECTRIC BRAKE

RELEASE

IGNITION

SWITCH

ENGINE

VACUUM

TRANSDUCER

Fig.
11 - Vacuum and Electrical Diagram

AUTOMATIC LEVEL CONTROL

INDEX

Page

General Description . . 15-11

System Checks and Adjustments 15-13

Service Operation . 15-15

GENERAL DESCRIPTION

A pneumatic level control system that automatically

maintains correct rear trim height of a car under varying

load conditions, the optional automatic level control is

used only in conjunction with the Superlift Shock Absorber

option.

The Superlift Shock Absorber option alone, consists of

the two shock absorbers with pressure lines to a "Tee"

where a ill valve is located, the shocks are inflated

with (or deflated of) compressed air (at any gas station)

to obtain the vehicle level desired with any given load

change.

The automatic leveling system is added to the Superlift

Shock Absorbers and supplies its own compressed air.

The system (fig. 13) consists of a vacuum operated air

compressor with pressure regulator,
and
integral storage

tank, vacuum line to engine, air intake filter, air lines,

and a height control valve.

The COMPRESSOR is a two-stage, vacuum actuated

type, requiring no lubrication. Vacuum supply is taken

from engine carburetor base. High pressure air is
supplied to the reservoir tank by the second stage of

the two-stage compressor. The first stage intake stroke

draws air at atmospheric pressure through a oneway

check valve located in the end of the first stage housing

under the first ^tagei housing cover. On the first stage

compression stroke, the intake valve is closed and the

oneway check valve in the second stage end of the piston

is opened. This allows the air from the first stage

cylinder to flow through the hollow piston into the second

stage cylinder for jhigh pressure compression. The

second stage compression stroke closes the check valve

in the piston and opeijis the check valve in the end of the

second stage housing.

The intake and compression strokes are controlled by a

sliding distributor valive that is actuated through an arm

that is tripped by the piston as it nears the end of each

stroke. Each time the arm actuates the distributor

valve, a different set of holes are covered in the first

stage housing. The distributor valve controls the flow of

intake manifold vacuum and air under atmospheric pres-

CHEVROLET CHASSIS SERVICE MANUAL

ACCESSORIES 15-12

VACUUM

(WIT

P

VACUUM Llh

, AIR SUPPt

LINES

t

SUPERLIFT F

SHOCK ABSO
OPERATED AIR COMPRESSOR

H STORAGE TANK AND

RESSURE REGULATORJV

\A

4E FROM ENG«NE^"^
/ \-HEIGHT CONTROL

•^-Z n VALVE (WITH TIME

^* DELAY MECHANISM)

EAR II

RBERS

Fig.
12 - Automatic Level Control Schematic

sure,
alternatley to opposite sides of the compressor

diaphragm.

As the compressor cycles, the reservoir air pressure

gradually increases causing a back pressure on the sec-

ond stage piston until it equals the push of pressure

against the diaphragm- At this point, a balanced condi-

tion is reached and the unit stops operating. After res-

ervoir pressure drops due to system air usage, the com-

pressor again begins to cycle and replenish the

reservoir.

Pressure balance will depend upon the prevailing mani-

fold vacuum and atmospheric pressure. Both are af-

fected by altitude above or below sea level. Balance

pressure will vary from approximately 150 to 275 psi.

NOTE: After completion of work on this sys-

tem or when servicing other parts of the car and

the system is deflated, inflate the reservoir to

140 psi or maximum pressure available through

the compressor service valve.

The PRESSURE REGULATOR VALVE is preset and

limits the reservoir outlet pressure to approximately 125

psi to avoid damage to the height control valve and Super-

lift shocks.

The HEIGHT CONTROL VALVE, which is mounted on

the frame, senses rear car height through a link attached

to the right rear upper control arm. When load is added

to the car, the overtravel lever is forced up causing an

internal lever to open the intake valve, when this valve

is open high pressure air is admitted to the Superlift

shocks. As the car raises to level, the intake valve shuts

off.

When load is removed from the car, the overtravel

lever is forced down causing the internal arm to open the

exhaust valve. As the car lowers to the level position,

the exhaust valve shuts off.

A four to eighteen second time delay mechanism, which

is built into the height control valve, prevents air trans-

fer due to normal ride movements. The overtravel

lever, which pivots around the control valve shaft, rides

off the flat side of the control valve shaft and does not

have time to. react to the rapid changes or normal ride

motions.
During changes due to loading, the time delay mecha-

nism will allow the overtravel shaft to open either the in-

take or exhaust' valve as required, since this is not a

rapid movement.

The SUPERLIFT shock absorber is essentially a con-

ventional hydraulic unit with a. pliable nylon reinforced

neoprene boot acting as an air chamber.

The unit will extend when inflated and retract when de-

flated by the control valve.

An eight to fifteen psi air pressure is maintained in the

Superlift at all times to minimize boot friction- This is

accomplished by a check valve in the exhaust fitting on

the control valve. Neither shock absorber function nor

conventional ride motions thru rear coil springs is im-

paired in the event of accidental air pressure loss. .

A combination of steel tubing and reinforced rubber

hose is used for air lines throughout the system.

-SUPERLIFT

PORT

STATION WAGON

& SEDAN

INTAKE

PORT
HAUST

PORT

Fig. 13 - Height Control Valve

AIR CHAMBER
BOOT

AIR DOME AIR PISTON

Fig. 14- Superlift Absorber

CHEVROLET CHASSIS SERVICE MANUAL