1967 CHEVROLET CAMARO tire pressure

LUBRICATION 0-16

Every 12,000 miles (more frequently*, depending on

severity of service, if vehicle is used to pull trailers,

carry full loads during high ambient temperatures,

operate in mountainous terrain or operate under other

severe conditions--Remove fluid from the transmission

sump and add one and a half quarts of fresh fluid for

Camaro and Chevy II and two quarts for Chevrolet,

Chevelle, and Corvette. Operate transmission through all

ranges and check fluid level as described above.

•Except if vehicle is equipped with transmission pro-

vided in heavy duty service options. If so equipped,

drain converter and pump every 12,000 miles and add

approximately seven and a half quarts of fresh fluid

for Chevy II and nine quarts for Chevrolet and Chevelle.

TURBO HYDRA-MATIC

Lubrication. recommendations for the Turbo Hydra-

Matic are the same as outlined for the Powerglide

transmission except for fluid capacity and filter change

listed below.

After checking transmission fluid level it is important

that the dip stick be pushed all the way into the fill tube.

Every 12,000 miles — after removing fluid from the

transmission sump, approximately 7 1/2 pints of fresh

fluid will be required to return level to proper mark on

the dip stick.

Every 24,000 miles, or at every other fluid change--

the transmission sump strainer should be replaced.

FRONT WHEEL BEARINGS

It is necessary to remove the wheel and hub assembly

to lubricate the bearings. The bearing assemblies should

be cleaned before repacking with lubricant. Do not pack

the hub between the inner and outer bearing assemblies

or the hub caps, as this excessive lubrication results in

the lubricant working out into the brake drums and

linings.

Front wheels of all passenger car models are equipped

with tapered roller bearings and should be packed with a

high melting point water resistant front wheel bearing

lubricant whenever wheel and hub are removed.

CAUTION: "Long fibre" or "viscous" type

lubricant should not be used. Do not mix wheel

bearing lubricants. Be sure to thoroughly clean

bearings and hubs of all old lubricant before

repacking.

The proper adjustment of front wheel bearings is one

of the important service operations- that has a definite

bearing on safety. A car with improperly adjusted front

wheel bearings lacks steering stability, has a tendency to

wander or shimmy and may have increased tire wear.
The adjustment of these bearings is very critical. The

procedure is covered in Section 3 of this manual under

Front Wheel Bearings—Adjust,

MANUAL STEERING GEAR

Check lubricant level every 36,000 miles. If required,

add EP Chassis Lubricant.

POWER STEERING

On models equipped with power steering gear, check

fluid at operating temperature in pump reservoir. Add

GM Power Steering Fluid, or, if this is not available, use

Automatic Transmission Fluid "Type A" bearing the

mark AQ-ATF followed by a number and the suffix letter

'A'
to bring level to full mark on dip stick.

AIR CONDITIONING

After the first 6,000 miles, check all hose clamp

connections for proper tightness.

Every 6,000 miles check sight glass under the hood,

after the system has been in operation for several

minutes. Sight glass should be clear but may, during

milder weather, show traces of bubbles. Foam or dirt

indicate a leak which should be repaired immediately.

BRAKE MASTER CYLINDER

Check level every 6,000 miles and maintain 1/4" below

lowest edge of each filler opening with GM Hydraulic

Brake Fluid Supreme No. 11.

PARKING BRAKE

Every 6,000 miles, apply water resistant lube to park-

ing brake cable, cable guides and at all operating links

and levers.

CLUTCH CROSS-SHAFT

Periodic lubrication of the clutch cross shaft is not

required. At 36,000 miles or sooner, if necessary;

remove plug, install lube fitting and apply CHASSIS

LUBRICANT.

CHASSIS LUBRICATION

For chassis lubrication, consult the lubrication chart.

It shows the points to be lubricated and how often the

lubricant should be applied.

The term "chassis lubricant" as used in this manual,

describes a water resistant EP chassis grease designed

for application by commercial pressure gun equipment.

CHEVROLET CHASSIS SERVICE MANUAL

HEATER AND AIR CONDITIONING 1A-28

providing a protective film to reduce the possibility

of infection.

3.
As soon as possible, call or consult an eye specialist

for immediate and future treatment.

REMEMBER -

pound of cure."
"An ounce of prevention is worth a

PRECAUTIONS IN HANDLING REFRIGERANT LINES

• All metal tubing lines should be free of kinks, be-

cause of the restriction that kinks will offer to the

flow of refrigerant. The refrigeration capacity of the

entire system can be greatly reduced by a single

kink.

• The flexible hose lines should never be bent to a

radius of less than 10 times the diameter of the hose.

• The flexible hose lines should never be allowed to

come within a distance of 2-1/2" of the exhaust

manifold.

• Flexible hose lines should be inspected at least once

a year for leaks or brittleness. If found brittle or

leaking they should be replaced with new lines.

• Use only sealed lines from parts stock.

• When disconnecting any fitting in the refrigeration

system, the system must first be discharged of all

refrigerant. However, proceed very cautiously re-

gardless of gauge readings. Open very slowly, keep-

ing face and hands away so that no injury can occur

if there happens to be liquid refrigerant in the line.

If pressure is noticed when fitting is loosened, allow

it to bleed off very slowly.

CAUTION: Always wear safety goggles when

opening refrigerant lines.

• In the event any line is opened to atmosphere, it

should be immediately capped to prevent entrance

of moisture and dirt.

• The use of the proper wrenches when making con-

nections on "O" ring fittings is important. The use

of improper wrenches may damage the connection.

The opposing fitting should always be backed up with

a wrench to prevent distortion of connecting lines or

components. When connecting the flexible hose con-

nections it is important that the swagged fitting and

the flare nut, as well as the coupling to which it is

attached, be held at the same time using three dif-

ferent wrenches to prevent turning the fitting and

damaging the ground seat.

• "O" rings and seats must be in perfect condition.

The slightest burr or piece of dirt may cause a leak.

• Sealing beads on hose clamp connections must be

free of nicks and scratches to assure a perfect seal.

MAINTAINING CHEMICAL STABILITY IN THE

REFRIGERATION SYSTEM

The metal internal parts of the Chevrolet refrigeration

system and the refrigerant and oil contained in the sys-

tem are designed to remain in a state of chemical

stability as long as pure R-12 and uncontaminated re-

frigeration oil is used in the system.

However, when abnormal amounts of foreign materials,

such as dirt, air or moisture are allowed to enter the

system, the chemical stability may be upset. When ac-

celerated by heat, these contaminates may form acids
Fig.
40-^-System Contaminants

and sludge and eventually cause the breakdown of com-

ponents within, the system. In addition, contaminates may

affect the temperature-pressure relationship of R-12,

resulting in improper operating temperature and pres-

sures and decreased efficiency of the system.

The following general practices should be observed to

insure chemical stability in the system.

• Whenever it becomes necessary to disconnect a

refrigerant or gauge line, it should be immediately

capped. Capping the tubing will also prevent dirt and

foreign matter from entering.

• Tools should be kept clean and dry. This also in-

cludes the gauge set and replacement parts.

• When adding oil, the container should be exception-

ally clean and dry due to the fact that the refrigera-

tion oil in the container is as moisture-free as it is

possible to make it. Therefore, it will quickly absorb

any moisture with which it comes in contact. For

. this same reason the oil container should not be

opened until ready for use and then it should be

capped immediately after use.

• When it is necessary to open a system, have every-

thing you will need ready and handy so that as little

Fig.
41—Gauge Set

CHEVROLET CHASSIS SERVICE MANUAL

HEATER
AND AIR
CONDITIONING
1A-41

OUTLET

1

TO EXPANSION
^

VALVE
TO
OIL

BLEED LINE

^ INLET

Fig.
51—Evaporator Pressure Control Valve—POA

turn increments until
the
suction pressure rises
to

the correct pressure.

5.
If the
pressure
is
more than
it
should
be,
turn the

adjusting screw counter-clockwise until
the
proper

pressure
is
reached.

6. After adjusting
the
switch, install the capillary to
its

normal position
and
observe
the
operation
of the

system
for
several minutes. Then
if
the operation
is

satisfactory remove the gauge
set,
replace the switch

and reinstall the face plate onto the evaporator case.

EXPANSION VALVE

A malfunction
of the
expansion valve will
be
caused

by
one of the
following conditions: valve stuck open,

valve stuck closed, broken power element,
a
restricted

screen
or an
improperly located
or
installed power

element bulb.
The
first three conditions require valve

replacement.
The
last two may be corrected by replacing

the valve inlet screen
and by
properly installing
the

power element bulb.

Attachment
of the
expansion valve bulb
to the
evap-

orator outlet line
is
very critical.
The
bulb must be

attached tightly
to the
line
and
must make good contact

with
the
line along
the
entire length
of
the bulb. A loose
bulb will result
in
high
low
side pressures and poor

cooling.
On
bulbs located outside
the
evaporator case

insulation must be properly installed.

The external equalizer line shown
in
Figure
55 is
not

used
in the
Custom
and
Chevy
II
All-Weather systems.

Indications
of
expansion valve trouble provided by the

Performance Test are
as
follows:

VALVE STUCK OPEN
OR
BROKEN POWER

ELEMENT

Noisy Compressor.
•

No Cooling
-
Freeze
Up.

VALVE STUCK CLOSED
OR
PLUGGED SCREEN

Very Low Suction Pressure.

No Cooling.

Fig.
52-P.O.A. Valve Installed
Fig.
53—Thermostatic Switch Removal

CHEVROLET CHASSIS SERVICE MANUAL

HEATER AND AIR CONDITIONING 1A-49

CHEVROLET

CHEVELLE

CHEVY II

CAMARO
the last possible moment. Be certain that the

direction of flow is correct before connecting

the pipes.

Chevrolet, Chevelle, Chevy II, and Camaro

Replacement

1.
Remove the receiver inlet and outlet connections and

the two receiver to fender skirt attaching screws.

2.
Carefully remove the receiver-dehydrator from the

vehicle.

3.
Replace the new receiver~dehydrator assembly in

the vehicle and install all attaching screws and re-

frigerant lines.

4.
Add one fluid oz. refrigerant oil, evacuate and charge

the system.

Corvette

Replacement

1.
Purge the system of refrigerant.

2.
Disconnect the "O" ring inlet

hose clamp outlet connection

openings.

3.
Remove the receiver-dehydrator to radiator support

bracket screws (production engine) or receiver-

dehydrator to condenser bracket screws (optional

engine) and remove the unit from the car.

4.
Install the new receiver-dehydrator applying 30 in.

lbs.
torque to the attaching screws.
connection and the

and tape the hose

NOTE:
Do not uncap the new receiver-

dehydrator until the last instant before

installation.

5.

2.

3.

Fig.
63—
Receiver-Dehydrator Mounting (Chevrolet,

Chevelle/ Chevy II, Camaro)
Connect the high pressure lines at the inlet (use a

new "O" ring and torque connection to 13 ft. lbs.)

and outlet (torque screw to 25 in. lbs.).

6. Add one fluid oz. refrigerant oil, evacuate, charge

and check the system.

Sight Glass Replacement-All Vehicles

If damage to the sight glass should occur, a new sight

glass kit should be installed. The kit contains the sight

glass,
seal and retainer. (See Figure 65.)

1.
Purge system.

Remove the sight glass retainer nut using a screw

driver and remove old glass and seal.

Install the new glass and seal and retainer nut, being

careful not to turn the nut past the face of the hous-

ing. To do so may damage the "O" ring seal.

4.
Evacuate and recharge the system.

EVAPORATOR

Chevrolet and Camaro Four-Season System

The evaporator and blower case assembly is designed

so that the core may be removed without the need for

removing the entire unit from the vehicle. Instead,

only the side cover must be removed.

Removal and Installation of Entire Assembly

1.
Remove the inlet line at the expansion valve and the

suction throttling valve outlet connection.

2.
Remove the electrical connector from the blower

motor.

CHEVROLET CHASSIS SERVICE MANUAL

HEATER AND AIR CONDITIONING 1A-50

Fig.
64—Receiver-Dehydrator Mounting (Corvette)

3.

4.

5.

6.
To gain access to the blower motor end of the as-

sembly, remove the fender and skirt.

Remove the assembly to firewall attaching screws.

Remove the entire assembly from the vehicle.

Reverse the above procedure when installing the

assembly into the vehicle.

Core Replacement

1.
Disconnect the connections at the suction throttling

valve inlet and the expansion valve outlet. Remove

the expansion valve bulb from the core outlet line.

Cap all open lines. .

Remove the screws attaching the evaporator cover

to the firewall and to the evaporator assembly and

remove the cover.

Remove the screws attaching the core to the assem-

bly and remove the core.

Reverse the above steps for core replacement.

Add three fluid oz. refrigerant after installing a

new core, evacuate and charge the system.
2.

3.

4.

5.

Comfortron

The evaporator assembly is nearly identical to that
of the Four-Season system, and, with the exception of

additional wiring and vacuum hoses, service procedures

are the same.

Chevelle Four-Season System

Removal

•
1.
Purge the system of refrigerant, then remove the

right fender skirt and the hood hinge. Do not remove

the fender.

2.
Disconnect the high pressure line (between the

receiver-dehydrator and the thermostatic expansion

valve) at the expansion valve, and the suction throt-

tling valve to compressor line at the suction throt-

tling valve. Cap and seal all open lines.

3.
Remove the three screws attaching the duct assembly

to the evaporator housing and the blower assembly.

4.
Remove the bolts attaching the evaporator assembly

to the cowl and carefully pull the assembly from the

vehicle. The duct assembly will be removed at this

time also.

Core Replacement

1.
With the evaporator assembly removed from the

vehicle, remove the expansion valve and its bulb.

2.
Remove the four nuts and bolts holding the two

halves of the evaporator housing together and sepa-

rate the halves.

3.
The evaporator core may now be removed.

4.
Leak test the new core and connections, before in-

stalling the core in the housing, by installing the

expansion valve and all refrigerant lines. Connect an

R-12 cylinder to the low pressure compressor gauge

fitting and charge the system to cylinder pressure,

then leak test.

5. After satisfactorily testing the core, install it into

the housing and reassemble the two sides of the.

housing.

Installation

1.
Remove the right trim pad and the screws attaching

the air conditioning duct to the kick panel. This

should allow the duct to be pulled slightly loose from

the kick panel. If not it may be necessary to loosen

the entire duct to obtain the necessary clearance.

2.
Install the evaporator in the cowl being sure that

the duct assembly is in place between an evaporator

housing and the blower assembly.

3.
Replace all bolts and screws.

4.
Move the interior air conditioning duct until sure

that the duct gasket is properly positioned over the

evaporator housing flange. Proper gasket fit at this

point is of great importance.

5. Replace all refrigerant lines.

6. Evacuate and charge the system. Add three fluid oz.

refrigerant oil after installing a new core.

7. Replace the fender skirt and hood hinge.

Universal System All Vehicles

Core and/or Expansion Valve Replacement

Since repairs should never be made on the evaporator

core, a defective unit must be replaced. Before replacing

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

ent are not located at the hose connections or expansion

valve connections.

CHEVROLET CHASSIS SERVICE MANUAL

HEATER AND AIR CONDITIONING 1A-71

SUN-AMBIENT

SENSOR AND COMPRESSOR

CLUTCH SWITCH

HIGH BLOWER

DELAY RELAY

THERMAL

VACUUM

VALVE

Fig.
102-Comfortron Underhood Wiring

use when inspecting a damaged vehicle equipped with air

conditioning.

1.
Remove the drive belt. Cut belt off if necessary.

2.
Visually inspect the condenser, receiver-dehydrator,

compressor, mounting brackets, conditioning unit, all

connecting lines, and all controls to determine the

extent and nature of the damage.

a. No repairs, such as soldering, welding or braz-

ing, should be attempted on the condenser be-

cause of its construction. If the vapor passages

in the horizontal tubes or return bends or mani-

folds have been damaged in any way, the con-

denser should be replaced with a new one.

b.
The receiver-dehydrator should be replaced if

there is any evidence of its having sustained

either internal damage or a fracture at any of

the lines or welded joints or if the system has

been exposed to the atmosphere for an undeter-

mined period of time.

c. Examine the compressor for any visible external

damage.

d. The evaporator should be examined for damage

and, if necessary, removed or replaced or the

entire unit processed where damaged or exposed

to the atmosphere.

e. All connecting lines and flexible hoses should be

examined throughout their entire length for dam-

age.
If damaged in any manner, replace with new

lines.
f. Check all controls and connecting wires for

damage and replace with new parts where needed.

g. Check the clutch pulley for proper operation and

freedom from damage.

3.
Install gauge set.

4.
Purge the system. Pressure should not exceed 3 to

5 pounds.

5. Remove the compressor from mounting and remove

the oil test fitting.

6. Pour out the oil into a clean glass container and ex-

amine it for any foreign substance such as dirt,

water, metal particles, etc. If any of these are

present, the compressor and receiver-dehydrator

should be replaced and the other system components

should be flushed with liquid refrigerant.

7. If the oil is clean and free of any harmful substance,

replace oil with Frigidaire Oil available through

Parts Stock.

NOTE:
If the system components have been

replaced or flushed, replace the full charge of

oil. If not, add no more fresh oil than was

drained in Step 6.

8. Charge up the compressor to drum or can pressure

and leak test the compressor seals prior to in-

stallation of compressor.

9. Reinstall the compressor and evacuate the system

by following the Evacuating Procedure.

CHEVROLET CHASSIS SERVICE MANUAL

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

CORVETTE BODY
1B-6

ASH TRAY

SET SCREW

(PART
OF
KNOB)
TENSION

ADJUSTING

SCREWS

Fig.
8—Console Trim

cracks",
the
windshield opening must
be
carefully

checked
for
irregularities
and
deformation.
To
check

windshield opening proceed
as
follows:

1.
With weatherstrip
and all
foreign material removed

from perimeter
of
opening and with molding clips
in

place, install windshield checking blocks (Special

Tool J-8942)
as
shown in Figure 17. Note that check-

ing blocks must
be
placed over molding clips
to

obtain proper alignment.

2.
Place
a new
windshield glass
in
opening, resting on

J-8942 blocks
as
shown in Figure
18.

3.
Check
fit of
glass carefully. Space between glass

and frame should not vary more than 1/8".

4.
Mark
and
repair
any
imperfections. Recheck
fit as

required.

Fig.
9—Special Clip
Fig.
10—Sun Visor and Inside Rear View Mirror

Installation

1.
Carefully clean
all
loose material
out of
windshield

frame
(fig. 19).

2.
Install
new
molding clips (Item
9, fig. 12).
Both

models
use 13
type
B
clips equally spaced on lower

frame section.
37
Models use 11 type A clips equally

spaced on the top frame section.

3.
Apply
a
bead
of gun
grade body sealer such
as

3M-1170
in
apex
of
windshield frame
as
shown
in

Figure
20.

4.
Install weatherstrip on windshield glass.

5. Starting
at
bottom center
of
glass, insert
a
piece
of

heavy cord such
as
chalk line,
etc. in
groove
of

weatherstrip.
Cut
cord long enough so that about 10"

of free length exists after going around windshield.

Knot ends
of
cord together where they meet at bot-

tom center
of
glass
and
draw knot into groove
(fig.

21).
Tape loose ends
to
inside surface
of
glass
as

shown.

6. Place weatherstrip windshield assembly
in
wind-

shield frame. From inside
of
vehicle grasp ends
of

cord and pull toward you.
It is
wise to have an assis-

tant exert gentle
but
firm pressure
on
outside sur-

face
of
glass
in the
area where string
is
emerging

from weatherstrip. Figure
22
illustrates action
of

string
on
weatherstrip.
Lip of
seal
is
pulled out of

frame apex and over pinchweld flange.

7. When string
has
been removed, carefully inspect

seating
of lip
over entire perimeter
of
windshield,

paying particular attention to corners.

8. Apply
2
beads
of
sealer on outer surface
of
weather-

strip
as
shown
in
Figure
23.
Inject
a
moderate

quantity
of
windshield cement such
as
3M-6699B

between windshield glass
and
weatherstrip using

pressure gun
as
shown
in
Figure
23.

9. Install lower reveal molding, aligning
it
with mark

made upon disassembly. Refer
to
Figure
12,
View

A, before attempting installation; note that flange
of

molding
and
clips (item
9) at
ends
of
molding must

pass between molding retaining clips and windshield

frame.
li
difficulty
is met in
engaging molding

flange with retaining clips,
a
piece
of
shim stock

may
be
used
as a
"shoe horn"
to
place flange be-

hind clips.

10.
Install
in
order named: Upper reveal molding (align-

ing marks made
at
disassembly); side weatherstrip

CHEVROLET CHASSIS SERVICE MANUAL