1967 CHEVROLET CAMARO instrument panel

HEATER AND AIR. CONDITIONING 1A-24

Fig. 35-Controls-AII Weather (Chevy II)

The heater components of the system are similar to

the standard Corvette heater with hoses routing engine

coolant to and from the heater core. A vacuum operated

shutoff valve assures that no coolant will pass through

the heater core until the system calls for heat.

Four control knobs surrounding the clock on the in-

strument panel center console provide full control of the

heating and cooling functions of the air conditioning

system.
The general arrangement of the system components

is pictured in Figure 37 while a schematic view of the

system will be found in Figure 36.

Controls Corvette

Four control knobs, grouped around the clock on the

instrument panel central console, provide full control

of the heating and cooling functions of the Corvette Air

Conditioning System. Each of the knobs, through a bowden

cable, operates one of the air diverter doors in the air

distributor assembly. In addition, the AIR COND.-PULL

knob operates the compressor switch; blower speeds are

controlled by turning the AIR PULL knob; and the heater

hot water valve vacuum switch is actuated by the COOL

IN-HQT PULL knob.

Air Conditioning "ON" Knob

The "AIR COND. PULL" knob controls the positioning

of the air diverter door which routes conditioned air

through either the dash diffuser ducts or the floor dis-

tributor outlets. Movement of this knob (hence, movement

of the selector door) also controls' the compressor

switch. When the door is positioned to send air through

the dash outlets the compressor is automatically turned

on to place the cooling system in operation and the fan

is turned on to LOW speed.

Blower Switch and Air Selector

The AIR PULL-FAN knob operates the selector door

in the right hand plenum chamber and may be set to allow

full outside air, full inside air, or a mixture of the two to

DEFROSTER DOOR

OPERATED BY

DEFROSTER KNOB
AIR CONDITIONING DOOR

OPERATED BY

AIR COND. PULL KNOB
BLOWER

OPERATED

BY TURNING

AIR KNOB

AIR DOOR

OPERATED

BY PULLING

AIR KNOB

OUTSIDE

AIR

CONTROLS

HEAT DOOR

OPERATED BY

COOL IN-HOT PULL

KNOB

L.H. OUTLET
CENTER

OUTLET
R.H. OUTLET
AIR COND.

PULL
COOL IN

HOT PULL

AIR PULL

LO-MED-HI
DEFROSTER

PULL

Fig.
36—Corvette Four-Season System Schematic

CHEVROLET CHASSIS SERVICE MANUAL

HEATER AND AIR CONDITIONING 1A-53

Fig.
70—Wiring and Vacuum Lines—Four-Season (Camaro)

Installation

1.
Connect the expansion valve to the refrigerant pipes.

Attach the capillary bulb to the evaporator.

2.
Attach the evaporator to the- case. Attach the inlet

and outlet pipes clamps.

3.
Assemble the case halves. Insert the capillary tube

from the thermostatic switch between the fins as

shown in Figure . Attach the cover plate to the

case.

4.
Mount the unit to the dash and connect the refrigerant

lines.

5.
Evacuate and charge the system. If a new evaporator

was installed, add three fluid ounces of refrigerant

oil to the system before charging.

6. Test system operation.

Chevy II All-Weather System

Removal

Under
the Hood

1.
Purge the refrigerant from the system.

2.
Remove the refrigerant hoses from the evaporator

inlet and outlet connections extending through the

special grommet in the dash panel and into the

engine compartment.

3.
Remove the screw, nut, spacer bracket and grommet

from the outlet connection pipes.
Within the Car

4.
Remove the glove box, ash tray and ash tray

retainer.

5.
Reach through the glove box door to disconnect the

air conditioning "on" door bowden cable (fig. 75).

6. Remove the two shield attaching screws and shield

(A, fig. 76) which covers the lower right evaporator

bracket-to-blower bracket attaching screw (B, fig.

76),
then remove this screw.

7.
Behind the lower left side of ihe evaporator, remove

the evaporator bracket-to-heater distributor bracket

attaching screw (C, fig. 76).

8. Reaching through the glove box door and ash tray

openings, remove the two nuts and washers (D,

fig.
76) attaching the evaporator assembly studs to

the lower instrument panel flange and reinforcement.

9. Disconnect the drain hoses and carefully pull the

evaporator unit toward the rear of the vehicle.

10.
Disconnect wiring connectors (see fig. 77) as nec-

essary and remove the evaporator unit from the

vehicle.

Gore and/or Expansion Valve Replacement

A defective unit must be replaced since repairs should

never be made on the evaporator core. Before replacing

the core, however, check to be sure that any leaks pres-

sent are not located at the hose connections or expansion

valve connections. The following procedure assumes that

the evaporator unit has been removed from the vehicle

as outlined above.

CHEVROLET CHASSIS SERVICE MANUAL

HEATER
AND AIR
CONDITIONING
1A-55

r-TO COMPRESSOR

^GROMMET^-^^Q^S

L.H. REAR—>*<^ >

BRACKET
/>v\j^-""^

A
r—FORWARD

\ BRACKET

*-^"^
\
EVAPORATOR

BLOWER
ASM

\
-BRACE

===:

7—-INSTRUMENT PANEL

f REINFORCEMENT

/

/

f
R.H. REAR
M

BRACKET
m

K BRACKET—^

#INLET
V

M
"6"
RING
\

/
\N

1
-
DASH PANEL—v

GROMMET—^
\

OUTLET—v
A^

J/

X
\—
OUTLET
"O"
RING

A \~-EVAPORATOR

,
&
BLOWER
ASM
INLET

TUBE

Fig.
72—Evaporator Mounting—Universal Unit

9. Replace
the
core
and
valve assembly, with
the
bow-

den cable
in
place,
in the
evaporator case
and
install

the
two
case-to-door bracket attaching screws.

10.
With
the
gasket
in
place, install
the
back cover
of

the evaporator case
and its
attaching screws and
the

seal around
the
evaporator inlet
and
outlet tubes.

11.
Reach through
the
face plate opening
and,
using
the

plastic plug, attach
the
thermostatic switch capillary

tube
to the
evaporator core.

Installation

Within
the Car

1.
Attach system wiring
as
necessary
to the
evaporator

case.

2.
Carefully pass
the
evaporator inlet
and
outlet pipes

through
the
special grommet
in the
dash panel.

3.
Insert
the
evaporator studs through their drilled

holes
in
the
instrument panel flange
and
reinforce-

ment
and,
reaching through
the
glove
box
door
and
ash tray opening, install
the nut
and washer
on
each

stud.

4.
Replace
the
screws attaching
the two
evaporator

case brackets
to
the
blower bracket and distributor

bracket.

5. Replace
the
shield
and
attaching screws protecting

the lower right mounting bracket.

6. Reaching through
the
face plate opening, attach
the

evaporator bowden cable.

7. Replace
the
face plate and attaching screws, feeding

the control knob stems through
the
proper openings

in
the
face plate.

8. Replace
the
control stem bezels
and
control knobs.

9. Replace
the
drain hoses.

10.
Replace
the
glove
box
and
ash
tray.

Under
the
Hood

11.
Replace
the
spacer bracket, screw
and nut on the

CHEVROLET CHASSIS SERVICE /MANUAL

HEATER AND AIR CONDITIONING 1A-65

Fig.
92—Chevrolet Four-Season Ducts

Installation

Reverse

assembly.
the removal procedure to reinstall the duct

Left Outlet Duct

Removal

1.
Remove the two parking brake lever bracket to

dash brace attaching screws and move the lever and

cable so they will not interfere with the duct

removal.

2.
Remove the screw and lock washer attaching the duct

outer bracket to the hinge pillar support.

3.
Remove the screws and lock washers attaching the

duct assembly to the dash brace bracket.

4.
Carefully pull the outer end of the duct downward,

detaching the courtesy light from its bracket.

5. Loosen the screws clamping the outlet duct to dis-

tributor assembly flexible tubing at the outlet duct.

The outlet duct may now be removed from beneath

the instrument panel.

6. The duct extension assembly and the deflector as-

sembly may be removed, if desired, as seen in

Figure 95.

Installation

The duct assembly is installed by reversing the re-

moval instructions.

Center Outlet Duct

Removal

1.
Remove the right and left console trim panels.

2.
Remove the radio receiver.

3.
Remove the electric clock.
4.
Remove the knobs, nuts and bezels from the two

air conditioning controls above the clock, AIR COND.

PULL and COLD IN-HOT PULL.

5. Carefully pull the outlet duct and control cables

loose from the rear of the center console and work

it down and out from under the dash. The left hand

control cable runs through the left hand flexible

tubing and may be left in the tubing after it is dis-

engaged from the duct. The right hand control cable

must also be pulled from the duct assembly as the

duct is removed.

6. The center deflector barrel assembly may now be

removed if necessary. Snap off the hairpin clips to

remove the barrel and spacer washers.

Installation

Reverse the removal procedure for installation.

AIR DISTRIBUTOR ASSEMBLY

Removal

1.
Drain the cooling system radiator.

2.
Remove the heater hoses from the core pipes and

remove the cover attaching nuts and cover surround-

ing the core pipes.

3.
Remove the glove compartment assembly and the

glove compartment door.

NOTE:.
See "Section 1 - Body" for removal

and installation of body items.

4.
Remove the right kick pad.

5. Remove the right and left center console trim panels.

6. Remove the radio receiver assembly.

7. Remove the defroster duct.

CHEVROLET CHASSIS SERVICE MANUAL

HEATER AND AIR CONDITIONING 1A-69

Fig.
96—Refrigerant and Vacuum Hoses (Corvette)

2.
Mount the sensor to the dash and connect the wires

to the Comfortron harness.

3.
Replace glove box assembly.

Control Head

The control head is attached to the instrument panel

flange in the same manner as the Four Season Control

Panel (See Figure 105). Two screws hold the head in

place. The amplifier, blower switch and servo and

defrost control cables are all part of the control head.

Amplifier

After the control head is removed from the instrument

panel, the amplifier may be removed as shown in Figure

107.

Temperature Dial Adjustment

1.
Install Tester J-22368 as previously described.

2.
Set Tester Voltage switch to Control Calibrate

position.

3.
Start the engine (fast idle) and set Comfortron

Control lever to HI-FRONT.

4.
Switch Rocker switch to MANUAL.

5. Set Manual Control Knob to 150 ohms on scale.

6. Rotate the Control Head Temperature Dial until the

voltmeter on the tester reads 6.5 volts. The Tem-

perature Dial should now indicate 75°.

7. If the Temperature Dial does not indicate 75°, insert

Tool J-21530 in slot to the left of the Dial as shown

in Figure 106.

8. With tool in position, rotate the Temperature Dial

so that it indicates 75°F.

Transducer

Figure 104 illustrates the installation of the transducer

assembly. Vacuum lines are clamped to the transducer

vacuum ports.
Fig.
97—Comfortron Vacuum Tank

CHEVROLET CHASSIS SERVICE JWANUAl

HEATER AND AIR CONDITIONING 1A-73

Fig.
105—Comfortron Control Head

10.
Introduce R-12 vapor at cylinder (room) temperature

and pressure.

11.
Leak test all fittings and connections and give partic-

ular attention to a leak test at the compressor shaft

seal if compressor has not been leak tested on the

bench.

12.
Complete system processing and charge system.

FUSES

A fuse, located in the junction block protects the entire

air conditioning system except for the blower when op-

erating at high speed.

A second fuse, to protect the high speed blower circuit,

is located in the electrical wiring between the horn relay

and the Air Conditioner relay (except Universal). The
Universal unit has a fuse in the line between the ignition

switch and the Air Conditioner blower switch. See the

specification page for the proper replacement fuse.

FOUR SEASON HEATER COMPONENTS

Corvette

The heater components of the system are, in general,

much the same as those of the standard Corvette heater.

Heater hoses carry the engine coolant to the heater core,

located in the air distributor duct beneath the instrument

panel.

A significant difference is that in the Corvette Air

Conditioning System there is no flow through the heater

core until the COOL IN-HOT PULL knob is pulled out.

This movement opens the vacuum switch on the air

distributor assembly and allows vacuum to be applied

to the water valve mounted in the engine compartment,

opening the valve. Thus the heater core is unheated

until needed, at which time it receives full flow of the

engine coolant. Air passing through the core receives

maximum heat which is tempered by mixing with un-

heated air before entering the passenger compartment.

Heater Core

Replacement

The heater core in the Corvette Air Conditioning

System is removed in the same manner as the core in

the Corvette heater. The distributor assembly must first

be removed from under the dash as covered previously

in this section before the core can be removed and

replaced.

Water Valve

Installation of the water valve is illustrated in Figure

113.
An inoperative valve must be replaced.

Chevrolet

Heater Core

Removal

1.
Disconnect battery ground cable.

2.
Drain radiator

3.
Remove right front fender and skirt assembly.

Fig.
106—Comfortron Temperature Dial Adjustment
Fig.
107—Amplifier Removal

CHEVROLET CHASSIS SERVICE MANUAL

SECTION
IB

CORVETTE BODY

INDEX

Page

General Description . . * • •.
•
^"i1

Maintenance and Replacements 1B-1

Front End 1B-1

Adjustments IBri

Hood 1B-1

Hood Catch 1B-2

Hood Assembly . 1B-2

Front Emblems 1B-2

Vent Grilles 1B-2

Instrument Panel Tray . 1B-2

Cowl Area Trim
....................
1B-4

Rear View Mirror 1B-4

Outside 1B-4

Inside . 1B-4

Sun Visor . 1B-4

Cowl Ventilator Assembly 1B-4

Windshield ; 1B-5

Doors 1B-7

Adjustments 1B-7

Door Lock Striker 1B-7

Door Window and Vent 1B-7

Door Hinges 1B-7

Trim Panel and Inside Handles IB-11

Weatherstrip 1B-11

Door Ventilator Assembly 1B-12

19437 Model 1B-12

19467 Model 1B-13

Window Glass 1B-13

Glass Run Channel—Upper 1B-14

Window Outer Seal Assembly 1B-14

Window Inner Seal Assembly 1B-14

Glass Run Channel—Rear 1B-15

Window Regulator—Manual 1B-15

Window Regulator—Power 1B-15

Door Lock and Remote Controls 1B-16

Outer Handle . 1B-16

Lock Cylinder 1B-17

Hinges—Door Assembly . 1B-17

Rear Quarter .. . 1B-19

Door Sill and Molding . . 1B-19

Rear End . . r 1B-19

Folding Top Compartment Lid 1B-19

Adjustments . . 1B-19

1B-19
Page

Lock 1B-19

Control 1B-19

Rear Window—19437 Model 1B-21

Gas Tank Door and Rear Trim Plate.,. . . . . . . . 1B-23

Rear Filler Panel 1B-23

Spare Tire Mount 1B-23

Rugs and Interior Trim 1B-25

Cleaning Soft Trim 1B-25

Carpets and Covers—All Models 1B-26

Rear Body Trim , . 1B-26

Soft Covers 1B-26

Rigid Plastic Trim 1B-26

Garnish Moldings Plus-Headliner-19437 Model . . 1B-27

Seats 1B-27

Body Mounting 1B-27

Body Repairs . 1B-27

General Instructions . . . 1B-27

Repair Panels. 1B-28

Precautions 1B-29

Plastic Solder Kit 1B-29

Resin Kit 1B-30

Specific Repairs 1B-32

Scratched Panels-Spot Refinishing 1B-32

Dents in Panels-Surface Cracks !B-33

Cracked Panels . . 1B-35

Fractures 1B-37

Panel Replacement 1B-39

Hard Top . . 1B-41

Care and Storage 1B-41

Rear Window 1B-41

Garnish Moldings and Latches 1B-42

Headlining 1B-43

Weatherstrips and Drip Molding 1B-43

Vinyl Covering . 1B-43

Folding Top 1B-46

Care of Folding Top 1B-46

Care of Rear Window 1B-46

Adjustments 1B-48

Top Assembly, Removal and Installation 1B-49

Top Trim and Rear Window Assembly 1B-50

Frame and Linkage 1B-52

Weatherstrip 1B-52

Adding Hardtop 1B-52

Special Tools 1B-53

GENERAL DESCRIPTION

.
A
structural network
of
steel forms the backbone
of
the

Corvette body. When combined with
the
fiber-glass
re-

inforced plastic body panels,
the
steel-plastic marriage

results
in a
body with increased torsional rigidity
and

greater beaming strength.
Convertible models continue with two roof styles:
the

folding
top
and the removable hardtop. In operation, both

tops function similar to those
of
previous models. Either

top
is
standard and both
are
optional
as
determined by

the top selected
as
base equipment.

MAINTENANCE
&
REPLACEMENTS

FRONT
END

ADJUSTMENTS

(Refer to Figure
2)

Adjustments should
be
made
in
order
-
hood position

first, then catch adjustments.
Hood

The position
of the
hood
in
relation
to
the hood body

opening and the fender surfaces
is
controlled by the posi-

tion
of the
hinges and position
and
adjustment
of
catch

and bumpers.

The fore
and aft
position
of the
hood may be adjusted

CHEVROLET CHASSIS SERVICE MANUAL

CORVETTE BODY 1B-2

Fig.
1—Steel
Reinforcing Members

by loosening the hinge retaining bolts (lower) and moving

the hood to the limit of slotted holes in hinge strap.

The upper surface of hood may be brought flush with

adjacent surfaces by shimming under hinges and adjust-

ment of bumper screw and catch bolt engagement. Figure

3 illustrates desired spacing.

Hood Catch

The hood catch should be adjusted so that catch bolts

enter lock plates freely and catch bolt length should be

adjusted so that rubber bumpers are slightly compressed

in latched position.

Entrance of catch bolt into the plate may be adjusted

by loosening the three catch bolt mounting screws enough

to allow movement of bolt assembly.

Synchronization of catch release may be made by ad-

justing the cable retainer located at left hand catch plate

assembly.

HOOD ASSEMBLY

Removal

1.
If hood is to be reinstalled, scribe a line around hood

hinge upper strap as shown in Figure 4.

2.
With aid of a helper to support hood, remove screws

retaining hinge straps and support assembly to hood.

If hinges are removed from vehicle, note amount of

shims under each hinge.

Installation

In replacing original hood, align hinge with scribe

marks made on removal and install retaining screws re-

moved from hinges and support.
If adjustment is required, proceed as outlined in this

section under Adjustments - Hood - Hood Catch.

HOOD PROP

Safety Retention Feature

When extended under hood service operations are

anticipated, the hood prop track and slide should be se-

cured by placing a 1/4" bolt and nut through the existing

holes.
This will prevent accidental closing of the hood

that could result in a serious injury.

FRONT EMBLEM

The front emblem is retained by special nuts which

may be reached by raising hood (fig. 5).

wiper arm on side of car
VENT GRILLES

Removal

1.
Remove windshield

affected.

2.
Remove four screws attaching grille to body (fig. 5).

3.
Lift grille far enough to gain access to windshield

washer hose and remove hose from nozzle.

4.
Remove grille from vehicle.

Installation

Grille may be installed by following removal procedure

in reverse order.

INSTRUMENT PANEL TRAY

The instrument panel tray may be removed from the

CHEVROLET CHASSIS SERVICE MANUAL