1967 CHEVROLET CAMARO engine

HEATER AND AIR CONDITIONING 1A-74

Fig.
108—Comfortron Power Servo Installation

4.
Disconnect heater' hoses from heater core (at

firewall).

5. Remove glove box door.

6. Remove glove box interior.

7. Disconnect right, left, and center air conditioning

outlet hoses from distributor duct.

8. Remove air distributor duct from heater

housing.

9. Disconnect hose and cable clamps from heater

housing.

10.
Remove the remaining three heater housing stud

retaining nuts (engine compartment) and one upper

retaining screw (inside vehicle).

11.
Pull the unit away from the firewall and out of the

car.

ADJUSTMENT

SCREW

Fig.
109—Mode Shift Vacuum Diaphragm
Fig. 110'—Compressor Mount—L-6 Engines (Typical)

12.
Remove heater.housing cover from heater housing.

13.
Remove heater core from heater housing cover by

removing four (4) retaining screws and two "U"

clamps.

14.
Remove heater core.

Installation

1.
Replace core in case using a non hardening sealer.

Attach the core clamps and retaining screws.

2.
Attach the heater housing cover to the housing.

3.
Position the unit against the firewall and attach

it with the retaining screw at the top of the case.

4.
Attach the sheet metal nuts to the case studs which

project through the firewall to the engine side.

5. Connect the control cables to the control doors and

case.

6. Attach the air distributor duct to the case.

7. Connect the left, right, and center outlet hoses.

8. Replace the glove box assembly.

9. Connect heater hoses to core tubes.

10.
Replace fender assembly.

11.
Fill cooling system and connect battery cable.

Camaro

Lower Heater Hose

Removal

1.
Drain radiator.

2.
Remove side mouldings and retainers.

3.
Remove lower fender attaching bolts.

4.
Remove skirt to fender and skirt to reinforcement

bolts.

5. pry the skirt away from the fender flange and away

from the firewall. Block the skirt (four inchlengtti

of 2 x 4) clear of the lower hose and proceed with

the hose replacement.

Installation

1.
Connect the hose.

2.
Remove the block, move the skirt into position and

install all attaching bolts.

3.
Replace fender attaching bolts and mouldings.

4.
Refill cooling system.

CHEVROLET CHASSIS SERVICE MANUAL

HEATER AND AIR CONDITIONING 1A-75

283-327 V-8

CHEVROLET, CHEVELLE AND CAMARO

396-427 V-8

CHEVROLET AND CHEVELLE

283-327 V-8

CHEVY II

Fig.
Ill—Compressor Mount—V-8 Engines

COMFORTRON HEATER COMPONENTS

Heater Core

Removal

1.
Remove the core case as previously described under

Heater and Air Distributor Assembly.

2.
Remove the screws attaching the die cast plate to

the air inlet side of the case. Disconnect the tem-

perature door linkage at the door shaft.
3.
Remove the die cast plate with core from the case.

Remove the core mounting screws and remove core.

Installation

1.
Seal the core to the cast plate with non-hardening

sealer and attach the core with the mounting straps

and screws.

2.
Install the plate to the case and connect the tem-

perature door linkage.

CHEVROLET CHASSIS SERVICE MANUAL

HEATER AND AIR CONDITIONING 1A-77

Compressor Belt Tension Adjustment

Adjust the compressor belt to the specifications shown

in the Tune-Up chart in the Engine section of this manual.

COMPRESSOR FAILURE

If the compressor has failed mechanically to the ex-
tent that metal chips and shavings are found in it, the

system should be checked for foreign material and

cleaned as described under Foreign Material in the

System.

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-83

DIVERTER DOOR

CRANK POSITIONS:

AIR COND "ON"

AIR COND "OFF*
AIR COND SWITCH

(PUSH BUTTON,

NORMALLY CLOSED

CONTACTS)

BLOWER MOTOR

CONTACTS

NORMALLY

4D

16

16B/Y

COMPRESSOR

GROUND WIRE

ASM

BAT.
TERMINAL

ON STARTING

MOTOR SOLENOID

' BATTERY

CABLE ASM:

NEGATIVE

POSITIVE—*
- CONTROL SWITCH

SET AT:

•OFF

LOW

MED

HIGH
CONTACTS:

BTOBL

BTOL

BTOM

BT0M6B,

CLUTCH

HOUSING
liOli: WHEN CONTROL

SWITCH IS AT "OFF" &

AIR COND. IS "ON", FAN

WILL RUN AT LOW SPEED.

"AIR COND-PULL"

KNOB (SHOWN IN "ON"

POSITION)

TO REGULATOR

HORN

RELAY
16 BRN-BODY WIRING

HARNESS-837

14BRN

I

^
IA^RN
* IGNITION SWITCH

« 12R ACCESSORY TERMINAL

12R f

AMMETER

LEGEND:

AIR COND WIRING (PART OF

ENGINE WIRING HARNESS)

WIRING IS PART OF EQUIP

REG PRODUCTION WIRING

Fig.
119—Corvette—Four-Season Wiring Diagram

CHEVROLET CHASSIS SERVICE MANUAL

CORVETTE BODY 1B-29

CUSHION

CUSHION ASNi.^ty** ACCESS

#2 BODY BRACKET

( 67 ONLY)
SHIM

( 37 POSITION).

CUSHION ASM.

( 37)

SHIM

( 67 POSITION)

CUSHION

( 37 ONLY)

#1 BODY BRACKET

Fig.
65—Body Mounts

PRECAUTIONS

Creams are available to protect the skin from a con-

dition known as occupational, or contact dermatitis. This

common type of dermatitis is not contagious. Improved

resin formulas in the approved kits have almost elimi-

nated skin irritation. Cream is supplied with the kit for

men who may have a tendency toward skin irritation

from the resins or dust.

The application of these creams is recommended

whenever the Resin Kit materials are used. Generally,

the cream is not required when the plastic solder kit is

being used. Directions for using the cream is as follows:

a. Wash hands clean. Dry thoroughly.

b.
Squeeze about 1/2 inch (or 1/2 teaspoonful) of

#71 cream into palm of hand.

c. Spread evenly and lightly until cream disappears.

Work cream into cuticle, between fingers and

around wrists.

d. Apply second coat, repeating Steps b and c.

e. Hold hands briefly under cold running water to

set cream.

2.
Remove resin mixture from hands as soon as possi-

ble and imperatively before mixture starts to gel.

This can be observed by the action of the material

being used. Resin may be removed with lacquer

thinner by washing in soap and water.

3.
Respirators are recommended when grinding. Also

some minor skin irritation from glass and powdered

cured resin may be evident. Washing in cold water

will help to minimize.

4.
Use a belt sander with a vacuum attachment for dust

control if possible.
5. Resin mixtures may produce toxic fumes and should

be used in well ventilated areas.

6. Be careful not to get any resin material on clothing.

7. Use the right materials for the job. It is important

to use the approved kits because Chevrolet's rigid

quality standards assure you the right material to

do the job. Other materials available may not meet

the required engineering and safety standards.

8. Keep the materials, utensils and work area clean

and dry. These repairs involve chemical reactions,

and dirt or moisture may upset the chemical bal-

ances and produce unsatisfactory results.

9. Before starting repair operations, look for hidden

damage by applying pressure around the damaged

area, looking for hairline cracks and other breakage.

Check for minor damage at other points in the vehi-

cle such as around exhaust pipes, grille, headlamps

and points of wear or rub. Early repair of this

minor damage may prevent major repair later.

PLASTIC SOLDER
KIT

The Plastic Solder Repair Kit is used for minor re-

pairs on the Corvette body. These materials will produce

an easy, quick and lasting repair in the case of small

cracks, surface imperfections and small holes.

1.
Use paint remover or power sander, and remove

finish from damaged area. Carefully inspect for

other areas requiring repair.

2.
Mix the materials (fig. 72).

3.
Apply the material, using a putty knife or rubber

squeegee, Figure 73. Work the material into the

repair and build the material up to the desired

CHEVROLET CHASSIS SERVICE

SECTION 2

FRAME

INDEX

Page

General Description 2-1

Chevrolet 2-1

Cheveile '. 2-1

Repair Procedures 2-1
Page

Checking Frame Alignment 2-1

Car Preparation 2-1

Tramming Sequence 2-1

Reference Point Dimensions 2-1

GENERAL DESCRIPTION

CHEVROLET AND CHEVELLE

Frames used on Chevrolet and Cheveile lines are basi-

cally the same, consisting of full length right and left

side members joined laterally by crossmembers. Sev-

eral different frames are used in each line to meet the

various vehicle size and function requirements but the

basic shape for each line remains the same. Differences

between frames in a given line exist only in metal gauge,

part size and numbers of parts necessary to meet the

particular structural requirements of the models

involved.

CORVETTE

The Corvette frame is a rigid perimeter unit, with five
crossmembers. From the rear kick-up forward, trap-

azoidal shaped, closed side members outline and protect

the passenger compartment. At the cowl area, the side

members curve inward in a sweeping "S" shape, to pro-

vide a sturdy foundation for the engine mounts and clear-

ance for front wheel movement. From the kick-up

rearward, box-sectioned side rails provide fore and aft

support for the rear axle and suspension. Lateral sup-

port is provided by five variously shaped welded-in

crossmembers, including the front unit, which formerly

was bolted-in.

CHEVY II AND CAMARO

Underbody alignment checking procedures will be found

in the Body Service Manual.

REPAIR PROCEDURES

CHECKING FRAME ALIGNMENT

Vehicles involved in an accident of any nature which

might result in a "swayed" or "sprung" frame should

always be checked for proper frame alingment in addi-

tion to steering geometry and wheel alignment.

CAR PREPARATION

Preparing the car for the frame alignment check in-

volves the following:

1.
Place the car on level surface.

2.
The weight of the car should be supported at the

wheel locations.

3.
A visual damage inspection should be made to elim-

inate needless measuring. Obviously damaged or

misaligned areas can often be located by sight.

TRAMMING SEQUENCE

When checking a frame for alignment in case of dam-

age,
the first step is horizontal "X" checking with a

tram from similar given points on opposite side of the

frame.

Frame alignment checks on all models should be made

with the tram points set at the center of each locating

point indicated and the cross bar level to insure

accuracy.

When "X" checking any section of the frame, the

measurements should agree within 3/16". If they do not,
it means that corrections will have to be made.

If a tram gauge is not available, the "plumb bob"

method of checking may be used. To assure any degree

of accuracy when using this method, the vehicle should

be on a level floor.

By using this method, it is only necessary to have a
#

piece of cord attached to an ordinary surveyor's plumb

bob.
When measuring the distance between two points,

the free end of the cord should be placed on the reference

point allowing the plumb bob to hang on the floor. A check

mark should be made on the floor just under the tip of

the plumb bob. This operation should be repeated at all

reference points. With these points located on the floor,

they may easily be measured with a rule.

The second step is checking the vertical dimensions

from the datum plane to the points to be trammed. With

the proper settings the tram bar will be on a plane

parallel to that of the frame. The exception to this would '

be when one of the reference locations is included in the

misaligned area; then the parallel plane between the

frame and the tram bar may not prevail. After com-

pletion of the repairs, the tram gauge should be set at

the specified dimension to check the accuracy of the re-

pair operation.

ALIGNMENT REFERENCE POINT DIMENSIONS

Dimensions to holes are measured to dead center of

the holes and flush to the adjacent surface metal.

CHEVROLET CHASSIS SERVICE MANUAL

FRONT SUSPENSION 3-3

by means of a lower control arm inner pivot cam; on the

Chevelle, Camaro and Corvette by means of upper control

arm inner support shaft shims.

Caster angle is adjusted, on the Chevrolet and Chevy n

by means of a strut rod which runs from the lower con-

trol arm forward to a frame brace; on the Chevelle,
Camaro and Corvette by means of upper control arm

inner support shaft shims.

A stabilizer bar is used on all Chevelle and Corvette

models. Chevrolet Impalas, station wagons and V-8

engine equipped models are fitted with the stabilizer bar.

UPPER CONTROL ARM

STABILIZER

SPRING
LOWER CONTROL ARM

STEERING KNUCKLE

Fig.
3 - Front Suspension - Corvette

MAINTENANCE AND ADJUSTMENTS

Maintenance intervals recommended for lubrication of

front suspension components have been fully covered in

Section 0 of this manual. Only actual adjustment proce-

dures will be covered here.

NOTE:
Unless otherwise indicated all proce-

dures will apply to all five vehicles covered in

this manual.

FRONT WHEEL BEARING ADJUSTMENT

Proper front wheel bearing adjustment has a definite

bearing on the safe operation of a vehicle. Improperly

adjusted front wheel bearings will result in a lack of

steering stability causing wheel wander, shimmy and ex-

cessive tire wear. Very accurate adjustment is possible

because the spindles are drilled both vertically and hori-

zontally and the adjusting nuts are slotted in all six sides.

NOTE:
Wheel bearings should not
be.
repacked

or adjusted as a part of "New Car Conditioning".
1.
With wheel raised, remove hub cap and dust cap and

then remove the cotter pin from the end of the

spindle.

2.
While rotating wheel, tighten spindle nut to 12 lbs. ft

torque.

3.
Back off adjusting nut one flat and insert cotter pin.

If slot and pin hole do not line up, back off the adjust-

ing nut an additional 1/2 flat or less as required to

insert cotter pin.

4.
Spin the wheel to check that it rolls freely and then

lock the cotter pin by spreading the end and bending

it around.

NOTE:
Bearings should have zero preload and

.001"
to .008" end movement when properly ad-

justed on Chevrolet, Chevelle, Camaro and Cor-

vette; .000" to .004" on Chevy H.

5.
Install dust cap, hub cap or wheel disc and lower

wheel.

6. Perform the same operation on each front wheel.

CHEVROLET CHASSIS SERVICE MANUAL