Page 101 of 659

HEATER AND AIR CONDITIONING 1A-78
WIRING DIAGRAMS
Blower
Motor
Resistor
•
Asm
EVAPORATOR—v
ASM.
\
-Diode
(Arc I
suppressor)
^\
16B
—>
-COMPRESSOR
Clutch Coil
•To battery positive
(+) terminal
No vacuum
in hose
#3
Blower
intake
air
Outside
air entry
Valve
by vacuum
in
hose
#3
Valve
normally
closed (spring
held)
Inside
car
air
(Recirc.)
AIR INLET
VALVE
POSITION:
Outside
air
intake
Recirc. air'intake
CONTROL ASM
TEMP CONTROL LEVER
(Operates temp valve
cable
&
equipment
in
chart shown below)
Compressor
Sw.
(Normally closed
Temp valve
begins
to
open
valveV
cable
arm
•Fan Speed Selector Switch
Switch
lever
position
Off
Low
Med
High
Contacts
made
B
to
None
BtoL
B to L
&
M
B to
L
& H
Fan
speed
Low
Low
Med
High
Resistance
in series with
Bio Motor
Hi
Rl
(RiR2)/(Rl+R2)
None
•Blower switch contacts must
be
dosed
before
fan
switch will
be
operable.
COLD
(O.
A.)
COLD a.A.)
Blower
H
y—low
switch
M/
-med
(Norm,
closed
contacts)
Fan speed switch
(See chart
at
left)
To vacuum,
tank
EXTENSION—vy
Horn relay "Bat" WIRE
ASM
X
harness
terminal
V
.**-__.. ;_
1 I panel
Legend:
___. —
Production wiring
Wire
is
part
of
equip.
•—————* Air
conditioning
wrg.
| i
T Agn. sw.
accsy
I term.
I
Temp
Control
Lever
Position
OFF
VENT.
COLD(I.A.)
COLEKO.AJ
HOT
Blower
(Master)
switch
contacts
Open
Closed
Closed
Closed
Closed
Vac switch
connects
vac source
to hose
#
#2
#2
&
#3
None
#3
#2
&
#3
Compressor
switch
contacts:
Open
Open
Closed
Closed
Open
Blower
intake
air
Outside
car air
intake used
Inside
car air
recirculated
Outside
car air
intake used
.Outside
car air
intake used
Fig. 114—Chevrolet—Four-Season Wiring Diagram
CHEVROLET CHASSIS SERVICE MANUAL
Page 102 of 659
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
Page 103 of 659

HEATER
AND AIR
CONDITIONING
1A-80
EVAPORATOR ASM.
Blower
Motor
INSIDE VALVE
(Normally closed
-spring held)
PLENUM VALVE
(Normally open
-spring held)
Actuator
(Vacuum
operated)
Inside car air (Recirc*
CONTROL ASM
TEMP CONTROL LEVER
•(Operates temp valve
cable
&
equipment in
hart shown below)
Temp valve
begins to
16DG
Fuse (In-line^
COMPRESSOR
Clutch Coil DASH-
PANEL
•Fan Speed Selector Switch
Switch
lever
position
Off
Low
"HeST
High
Contacts
B to
None
BtoL
B to L b U
BtoL&H
Fan
speed
Low
Low
Med
High
Resistance
in series with
Bio Motor
Rl
Rl
RlR2)/(Rl+R2)
None
•Blower switch contacts must be closed
before fan switch will be operable.
-To battery positive
(-0 terminal
•
Horn relay
terminal"
"Batf
To vacuum
tank
EXTENSION
WIRE
ASM
(Normally closed
contacts-*vac
operated)
7
*- Fan speed switch
(See chart at left)
•/-Wire is
\ part of
I inst panel
harness
Legend:
— Production wiring
————
Wire Is part of equip.
•mmmmmmmmmmmmmm*
AIT
Conditioning
WTg*
Temp
Control
Lever
Position
OFF
VENT
COLD
a.A.)
COLD
(O.A.)
HOT
Blower
(Master)
switch
contacts
Open
Closed
Closed
Closed
Closed
Vac switch
connects
vac source
to hose #
#2
&
#3
#2
#3
None
#2
Compressor
switch
contacts^
Open
Open
Closed
Closed
Open
Blower
intake air
Outside car air
intake used
Inside car air
recir culated
Outside car air
intake used
Outside car air
intake used
Fig.
116—Camaro—Four-Season Wiring Diagram
CHEVROLET CHASSIS SERVICE
Page 104 of 659
HEATER AND AIR CONDITIONING 1A-81
HORN RELAY
r
CONN.-
14 BROWN
(TO FUSE
PANEL)
BATTERY
1
—I ^ COMPR
ESSOR
DASH y
V-^ PANEL \
GROMMET—%
1 \
_ J~ ") "^
>14 BLACK/RED STRIPE-
FUSE .20 AMP.
•WIRE ASM. BLOWER-
MOTOR
14 BLACK 1
IGNITION SWITCH1
(ACCESSORY
TERMINAL)
CONTROL SWITCH
-RESISTOR
CONN.
•14 TAN
•16 BLACK
LIGHT BLUE STRIPE
•THERMOSTAT CONTROL
EVAPORATOR & BLOWER ASM.
Fig.
117—Universal System Wiring Diagram (Typical)
CHEVROLET CHASSI
Page 105 of 659
HEATER AND AIR CONDITIONING 1A-82
•BATTERY
(POS)
CABLE
NOTE
When
control
switch*
is !TOFF"
&
Air
Cond
is
"ON"
(Control
knob
pulled
but) the
blower
fan'will
run at low
speed.
CONTROL
SWITCH
CONNECTIONS
OFF
LOW
MED
HIGH
B
TO
NONE
B
TO L
BTOL&M
B
TO L
&
H
COMPRESSOR
GROUND
WIRE
ASM
BATTERY
(NEGATIVE)
CABLE
COMPRESSOR
ASM
DASHPAJSTEL
GROMMET
16DG
CONTROL
SWITCH
RESISTOR
ASM
14LBL
14BRN
CLUTCH
COIL
EXTENSION
WIRE
ASM
-14BRN--N
JUNC
BLOCKi
OSTATIC
SWITCH
CONTACTS
NORMALLY
CLOSED
STARTING
MOTOR
SOLENOID
BLOWER
MOTOR
AIR
COND
CONTROL
(PUSH-PULL)
KNOB
DOOR
SWITCH
(PUSH
BUTTON
NORMALLY
CLOSED)
RELAY
ASM
HORN
RELAY
DIVERTER
DOOR CABLE
FUSE
PANEL
EVAPORATOR
ASM
IGNITION SWITCH-
ACCESSORY TERMINAL)
Fig. 118—All Weather Wiring Diagram (Chevy II)
CHEVROLET CHASSIS SERVICE MANUAL
Page 106 of 659
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
Page 107 of 659

HEATER
AND AIR
CONDITIONING
1A-84
SPECIAL TOOLS
18
19 20 21 23 24
28
30
32
Fig.
120—Air Conditioning—Special Tools
1.
1A.
IB.
2.
3.
4.
5.
6.
7.
00*
9.
10.
11.
12.
13.
14.
15.
J-8393
J-22368
J-21530
J-5453
J-9459
J-5420
J-6084
J-8433
J-9395
J-6272
J-6271
J-7151
J-5421
J-5403
J-6435
J-9396
J-9397
Charging Station
Comfortron System fester
Comfortron Temperature Dial Adjuster
Goggles
90° Gauge Line Adapter
Gauge Line Adapter
Leak Detector
Puller
Puller Pilot
No.
3
Multi-Opener (3-Can)
Fitzall Valve (Single
Can)
Non-Magnetic Clutch Shims
Pocket Thermometers
(2)
#21 Snap Ring Pliers
#26 Snap Ring Pliers
Compressor Holding Fixture
Compressing Fixture
16.
J-9403
17.
J-9399
18.
J-9401
19.
J-9480
20.
J-9392
21.
J-9393
22.
J-9298
23.
J-9481
24.
J-8092
25.
J-9521
26.
J-5139
27.
J-9432
28.
J-9553
29.
J-21508
30.
J-21303
31.
J-9527
,
32.
J-9402
Clutch
Hub
Holding Tool
9/16" Thin Wall Socket
Hub
and
Drive Plate Assembly Remover
Hub
and
Drive Plate Assembly Installer
Seal Remover
Seal Seat Remover
Pulley Bearing Remover
Pulley and Bearing installer
Handle
Internal Assembly Support Block
Oil Pickup Tube Remover
Needle Bearing Installer
Seal Seat "O" Ring Remover
Seal Seat "O" Ring Installer
Shaft Seal Protector
Pressure Test Connector
Parts Tray
CHEVROLET CHASSIS SERVICE MANUAL
Page 148 of 659

CORVETTE BODY 1B-41
Fig.
92—Applying Cement to Window
8. Impregnate backup plies of woven glass cloth with
prepared plastic mixture by dipping or brushing.
Remove excess plastic from cloth by squeezing.
9. Place impregnated backup plies on underside of
panels. If necessary, hold backup plies in place with
paper until plastic "gels."
10.
Prepare another plastic mixture of resin and
hardener and mix thoroughly. To this mixture add
Fig.
93—Removing Feeler Stock
cut glass fiber (1/2" lengths) until mixture has a
putty-like consistency, or utilize glass cloth.
11.
Fill "V" groove with reinforced plastic material
or saturated glass cloth. Build up surrounding area
with sufficient material to allow for finish
operations.
12.
Allow patch to harden.
1.3. File or sand (#80-D sandpaper) to general panel
contour.
14.
Allow plastic fill to harden, then sand, preparatory
to paint operations.
HARD TOP
CARE AND STORAGE
The outside painted finish of the hard top should be
cleaned the same way as the rest of the car. The inside
headlining should be cleaned as outlined under Cleaning
Soft Trim.
When not using hard top, store it indoors where it can
be kept clean and dry. If the top is to be stored for a long
period of time, keep it covered to avoid dirt settling on
top and headlining. It is not advisable, however, to wrap
top assembly in a manner which will stop air circulation.
The hard top rear window is plexiglas and should be
cared for in exactly the same manner as outlined for the
convertible top rear window (see Care of Folding Top
in this section). Never scrape ice from rear window-
scratches are sure to result.
REAR WINDOW
Consult Figures 83 and 84 for parts identification.
Removal
1.
Remove hard top from vehicle. Place protective
covering over headlining.
2.
Remove screws retaining lower reveal moldings and
cap.
3.
Mark position of right hand upper reveal molding
end on top (fig. 85) and pry molding out of weather-
strip.
Repeat on left hand molding.
4.
Remove rear garnish moldings as outlined farther
on in this section.
5. Working from inside of top, carefully work weather-
strip from frame flange and push weatherstrip-
window assembly toward rear of top until free of
window frame.
6. Remove weatherstrip from window and inspect care-
fully. If weatherstrip is damaged, it should be dis-
carded. If it is in usable condition, clean off all
foreign material.
Installation
1.
Clean window frame of all old sealer, dirt, etc.
Remove and discard upper reveal molding retainers.
2.
Install twelve new upper reveal molding retainers
using mark made when removing reveal moldings
as guide. The two middle retainers should be 2"
center to center, those remaining should be approxi-
mately 7" apart as shown in Figure 86.
3.
As an aid to engaging reveal moldings in retainers
later on, place a short length of feeler stock behind
each as shown in Figure 87.
4.
Install weatherstrip on window.
CHEVROLET CHASSIS SERVICE MANUAL