1970-72 chevelle - speedway motorsstatic.speedwaymotors.com/pdf/725561071.pdf3 197072 w/o ac 901071...

1970-72 CHEVELLE w/o FACTORY AIR

561071

901071 REV C 07/09/14, 1970-72 CHEVELLE w/o AC EVAP INSTR PG 1 OF 25

SS

an ISO 9001: 2008 Registered Company

2

1970-72 CHEVELLE w/o AC


PAGESTable of Contents

1. COVER 2. TABLE OF CONTENTS 3. PACKING LIST / PARTS DISCLAIMER 4. INFORMATION PAGE 5. WIRING NOTICE 6. ENGINE COMPARTMENT, CONDENSER ASSEMBLY, COMPRESSOR & BRACKET, PULLEYS, FIGURE 1 7. PASSENGER COMPARTMENT FIGURES 2 & 3 8. KICK PANEL MODIFICATION FIGURES 4 & 5 9. DEFROST DUCT INSTALLATION & (OPTIONAL) HOSE ADAPTER INSTALLATION- IF EQUIPPED FIGURES 6 & 7 10. FRESH AIR COVER INSTALLATION & KICK PANEL FRESH AIR CAP INSTALLATION FIGURES 8, 9, 9a & 9b11. FIREWALL COVER INSTALLATION & EVAPORATOR INSTALLATION FIGURES 10 & 1112. BRACKET INSTALLATION FIGURE 1213. EVAPORATOR INSTALLTION CONT. FIGURES 13,14 & 14a14. 70-72 CHEVELL w/o AC w/o ASTRO VENTS & 70-72 CHEVELLE w/o AC w/ ASTRO VENTS FIGURES 15 & 1615. DRAIN HOSE INSTALLATION, LUBRICATING O-RINGS, A/C HOSE INSTALLATION, & MODIFIED A/C HOSE KIT FIGURES 17 & 1816. AC & HEATER HOSE ROUTING FIGURE 1917. FINAL STEPS, GLOVE BOX INSTALLATION FIGURES 20, 21 & 21a18. CONTROL PANEL & DUCT HOSE ROUTING FIGURE 2219. WIRING DIAGRAM20. GEN IV WIRING CONNECTION INSTRUCTIONS21. OPERATION OF CONTROLS22. TROUBLE SHOOTING INFORMATION23. TROUBLE SHOOTING INFORMATION CONT.24. KICK PANEL MODIFICATION TEMPLATE25. EVAPORATOR KIT PACKING LIST

3



** BEFORE BEGINNING INSTALLATION OPEN ALL PACKAGES AND CHECK CONTENTS OF SHIPMENT. PLEASE REPORT ANY SHORTAGES DIRECTLY TO VINTAGE AIR WITHIN 15 DAYS. AFTER 15 DAYS, VINTAGE AIR WILL NOT BE RESPONSIBLE FOR MISSING OR DAMAGED ITEMS.

EVAPORATOR KIT561071

1.2.

11

762169784171

1

ACCESSORY KIT784171

2

GEN IV 4 VENTw/ 2 & 2 ½ EVAP

SUB CASE762169

GEN IV 4 VENT w/ 2 & 2 ½ EVAP. SUB CASE

EVAPORATOR KIT PACKING LISTNo. QTY. PART No. DESCRIPTION

1970-72 CHEVELLE w/o AC ACC. KIT

NOTE: IMAGES MAY NOT DEPICT ACTUAL PARTS AND QUANTITIES.REFER TO PACKING LIST FOR ACTUAL PARTS AND QUANTITIES.

OFF

DASH

HOT

FLR

HI

DEF

COLD

AC

4



Use of Any Other Refrigerants Will Void All Warranties of the Air Conditioning System and Components. Use of the Proper Type and

Amount of Refrigerant Is Critical to Proper System Operation. VintageAir Recommends Our Systems Be Charged By Weight With a Quality

Charging Station or Scale.

Service Info:

Safety Switches:

Important Notice—Please Read

Attention: The following system components are capped: Compressor, evaporator, condenser & drier. Caps may be under pressure with dry nitrogen. Be careful removing caps. Do not remove caps prior to installation. Removing caps prior to installation will cause components to collect moisture and lead to premature failure and reduced performance.

Evacuate the system for 35-45 minutes with system components (Drier, compressor, evaporator and condenser) at a temperature of at least 85° F. On a cool day, the components can be heated with a heat gun OR by running the engine with the heater on before evacuating. Leak check and charge to specifications.

For Maximum System Performance, Vintage Air Recommends the Following:

Heater hose may be purchased from Vintage Air (Part# 31800-VUD) or your local parts retailer. Routing and required length will vary based on installer preference.

Vintage Air Systems Are Designed to Operate With R134a Refrigerant Only! Use of Any Other Refrigerants Is a Fire Hazard and Could Damage Either Your Air Conditioning System or Your Vehicle.

Refrigerant Capacity for Vintage Air Systems:(For other systems, consult manufacturer’s guidelines)

R134a SystemCharge with 1.8 lbs. (1 lb., 12 oz.) of refrigerant.

Lubricant Capacities:New Vintage Air-supplied Sanden Compressor: No additional oil needed (Compressor is shipped with proper oil charge).All Other Compressors: Consult manufacturer (Some compressors are shipped dry and will need oil added).

Your Vintage Air system is equipped with a binary pressure safety switch. A binary switch disengages the compressor clutch in cases of extreme low pressure conditions (Refrigerant Loss) or excessively high head pressure (406 PSI) to prevent compressor damage or hose rupture. A trinary switch combines Hi/Lo pressure protection with an electric fan operation signal at 254 PSI, and should be substituted for use with electric fans. Compressor safety switches are extremely important since an A/C system relies on refrigerant to circulate lubricant.

Heater Hose (Not Included With This Kit):

To ensure a watertight seal between the passenger compartment and the vehicle exterior, for all bolts passing through the cowl and/or firewall, Vintage Air recommends coating the threads with silicone prior to installation.

Bolts Passing Through Cowl and/or Firewall:

5



Important Wiring Notice—Please Read

Some Vehicles May Have Had Some or All of Their Radio Interference Capacitors Removed. There Should Be a Capacitor Found At Each of the Following Locations:

1. On the positive terminal of the ignition coil.2. If there is a generator, on the armature terminal of the generator.3. If there is a generator, on the battery terminal of the voltage regulator.

Most alternators have a capacitor installed internally to eliminate what is called “whining” as the engine is revved. If whining is heard in the radio, or just to be extra cautious, a radio interference capacitor can be added to the battery terminal of the alternator.

It is also important that the battery lead is in good shape and that the ground leads are not compromised. There should be a heavy ground from the battery to the engine block, and additional grounds to the body and chassis.

If these precautions are not observed, it is possible for voltage spikes to be present on the battery leads. These spikes come from ignition systems, charging systems, and from switching some of the vehicle’s other systems on and off. Modern computer-operated equipment can be sensitive to voltage spikes on the power leads, which can cause unexpected resets, strange behavior, and/or permanent damage.

Vintage Air strives to harden our products against these types of electrical noise, but there is a point where a vehicle’s electrical system can be degraded so much that nothing can help.

Radio interference capacitors should be available at most auto and truck parts suppliers. They typically are cylindrical in shape, a little over an inch long, a little over a half inch in diameter, and they have a single lead coming from one end of the cylinder with a terminal on the end of the wire, as well as a mounting clip which is screwed into a good ground on the vehicle. The specific value of the capacitance is not too significant in comparison to ignition capacitors that are matched with the coil to reduce pitting of the points.

Care must be taken, when installing the compressor lead, not to short it to ground. The compressor lead must not be connected to a condenser fan or to any other auxiliary device. Shorting to ground or connecting to a condenser fan or any other auxiliary device may damage wiring, the compressor relay, and/or cause a malfunction.

When installing ground leads on Gen IV systems, the blower control ground and ECU ground must be connected directly to the negative battery post.

For proper system operation, the heater control valve must be connected to the ECU.

•

•

•

6



BATTERY, BATTERY TRAY (RETAIN) DRAIN RADIATORTO REMOVE THE BLOWER ASSEMBLY (UNDER HOOD) AND THE AIR DISTRIBUTION SYSTEM (UNDER DASH) THE FACTORY MANUAL INDICATES DOING THE FOLLOWING, REMOVE RIGHT INNER FENDER. OEM HEATER HOSES (DISCARD). SEE FIGURE 1.OEM HEATER WIRING/VACUUM HARNESS MOLDED GROMMET. SEE FIGURE 1.

BEFORE STARTING THE INSTALLATION, CHECK THE FUNCTION OF THE VEHICLE (HORN, LIGHTS,ETC.) FOR PROPER OPERATIONS.

STUDY THE INSTRUCTIONS, ILLUSTRATIONS, & DIAGRAMS.

ENGINE COMPARTMENTREMOVE THE FOLLOWING

FIGURE 1

CONDENSER ASSEMBLY & INSTALLATION

REFER TO SEPARATE INSTRUCTIONS INCLUDED WITH THE CONDENSER KIT TO INSTALL THE CONDENSER.BINARY SWITCH INSTALLATION (REFER TO CONDENSER INSTRUCTIONS)

REFER TO SEPARATE INSTRUCTIONS INCLUDED WITH THE BRACKET KIT TO INSTALL THE COMPRESSOR BRACKET.

IN MOST INSTANCES THE BELT LENGTHS WILL REMAIN THE SAME.

COMPRESSOR & BRACKETS

PULLEYS

7



REMOVE THE DASH PAD BY REMOVING (6) OEM SCREWS.(RETAIN), SEE FIGURE 2 BELOW. LOWER STEERING COLUMN. PROTECT STEERING COLUMN WITH A CLOTH.DISCONNECT ALL WIRE AND CABLES FROM INSTRUMENT PANEL SPEEDOMETER, CONTROL PANEL, AND RADIO. THE LOWER DASH BY REMOVING THE (8) BOLTS.(RETAIN) ALL HOSE AND DUCTING FROM O.E.M LOUVERS AND ASTRO VENT DOOR, SEE FIGURE 2 BELOW O.E.M DEFROST DUCT ASSEMBLY BY REMOVING THE (4) SCREWS, SEE FIGURE 3 BELOW. O.E.M HEATER ASM SEE FIGURE 3 BELOWPASSENGER SIDE KICK PANEL/ FRESH AIR DOOR ASM AS SHOWN IN FIGURE 4 PAGE 8.

PASSENGER COMPARTMENT

REMOVE THE FOLLOWING:

REMOVAL OF DASHBOARD REQUIRED TO INSTALL THE EVAPORATOR. VINTAGE AIR RECOMMENDS THAT YOU UTILIZE THE FACTORY SERVICE MANUAL WHEN YOU DISASSEMBLEAND REASSEMBLE THE DASHBOARD.

NOTE:

INSTRUMENTPANEL

DASH PAD

(6) OEM SCREWS

DOOR FLAP

CONTROLPANEL

HEATER ASSEMBLY& RELATED DUCTING

FIGURE 2 DEFROST DUCT ASM

OEM HEATER ASMFIGURE 3

8



KICK PANEL MODIFICATION

FIGURE 4

FIGURE 5

FIGURE 5a

FRESH AIRDOOR ASM.

PULL CABLEASSEMBLIES

FRESH AIRDOOR ASM.

OEMSCREWS

TEMPLATE

31102-GUR1/2 PLASTIC PLUG

KICK PANEL GRILLE

REMOVE KICK PANEL GRILLE. (DISCARD) REMOVE KICK PANEL BY REMOVING (5) OEM SCREWSFROM THE FRESH AIR DOOR ASM. DISCONNECT AND DISCARD PULL CABLE ASSEMBLIES FROM THE KICK PANEL. SEE FIGURE 4 BELOW.

INSTALL 1/2 PLASTIC PLUGS TO FILL THE HOLES LEFT FROM THE REMOVAL OF THE PULL CABLE ASMSEE FIGURE 5 BELOW.CUT FRESH AIR DOOR ASM. AS SHOWN IN FIGURE 5 BELOW.USE TEMPLATE PROVIDED ON PAGE 24.PLACE TEMPLATE ON KICK PANEL AS SHOWN IN FIGURE 5a.REINSTALL KICK PANEL.

KIC

K PA

NEL C

UT-O

UT

TEMPLA

TE

68-72 C

HEVELLE

W

/O A

C

CUTOUT

TEMPLATE

CUT THIS SECTION OUT

9



FIGURE 6

DEFROST DUCT INSTALLATIONINSTALL DEFROST DUCTS UNDER DASH AS SHOWN IN FIGURE 6 BELOW. SECURE USING OEM SCREWS.

INSTALL ASTRO VENT CAP AS SHOWN IN FIGURE 6 BELOW.

DEFROST DUCT

626670

OPTIONALOEM

ASTROVENT

OPTIONALOEM

ASTROVENT ASTRO

VENTCAP

498825

ASTROVENTCAP

498825

OEM SCREWS

OEM DEFROST DUCT

MOUNTING FLANGE

(OPTIONAL) HOSE ADAPTER INSTALLATION- IF EQUIPPED

INSTALL S-CLIPS ON HOSE ADAPTERS AS SHOWN IN FIGURE 7 BELOW.

INSTALL DRIVER & PASSENGER SIDE HOSE ADAPTER INSIDE OEM LOUVERS. SEE FIGURE 7 BELOW

DR. SIDE LOUVER HOSE

ADAPTER498823

PASS SIDELOUVER HOSE

ADAPTER498824

INSTALL(3) S-CLIPSINSTALL

(3) S-CLIPS

PASSENGER SIDEDRIVER SIDE

FIGURE 7

10



1/4-20 x 1 ½”BOLT w/ WASHER

FRESH AIR COVER INSTALLATION

SILICONE

FRESH AIRCAP

(4) GROMMETS33137-VUI

FIGURE 8BACK SIDEOF FRESH AIR

CAP

ENGINE COMPARTMENT

SIDE OF FIREWALL

INSTALL (4) GROMMETS IN FRESH AIR CAP. SEE FIGURE 8 BELOWAPPLY A 1/4” BEAD OF SILICONE AROUND THE BACK SIDE OF THE FRESH AIR CAP AS SHOWN INFIGURE 8 BELOW.ATTACH FRESH AIR CAP TO FIREWALL USING A 1/4-20 x 1 1/2" BOLT AND WASHER, SEE FIGURE 8BELOW. (NOTE: FRESH AIR CAP INSTALLS ON ENGINE SIDEOF FIREWALL.)

FIGURE 9b

FIGURE 9a

FIGURE 9

KICK PANEL FRESH AIR CAP INSTALLATIONINSTALL (4) GROMMETS IN KICK PANEL FRESH AIR CAP, SEE FIGURE 9a BELOW.

ROUTE A/C AND HEATER HOSE THROUGH FRESH AIR CAP AND KICKPANEL FRESH AIR CAP AS SHOWN IN FIGURE 9 AND 9b, BELOW.

APPLY A 1/4” BEAD OF SILICONE AROUND THE BACK SIDE OF KICK PANEL FRESH AIR CAP AS SHOWN IN FIGURE 9a, BELOW.

SECURE KICK PANEL FRESH AIR CAP USING (5) #8 x 1 1/4 PH PAN HEAD SCREWS, AS SHOWN IN FIGURE 9b BELOW.

(5) #8 x 1 ¼”PH PAN HEAD

SCREWS

SILICONE

BACK SIDE OF KICK PANEL

FRESH AIR CAP

#10 A/CHOSE

#6 A/CHOSE(2)HEATER

HOSES

#10 A/C HOSE

#6 A/C HOSE(2) HEATER

HOSE

(4)GROMMETS33137-VUI

11



FIREWALL COVER INSTALLATIONAPPLY A 1/4” BEAD OF SILICONE AROUND THE BACK SIDE OF THE FIREWALL COVER AS SHOWN IN FIGURE 10, BELOW.

FROM INSIDE THE CAR, INSTALL FIREWALL COVER ON FIREWALL USING (3) 1/4-20 x 1” HEX BOLTS, FLAT WASHERS AND 1/4-20 NUT WITH STAR WASHER, SEE FIGURE 10, BELOW.

BACK SIDEOF FIREWALL

COVERSILICONE

(3) 1/4-20 x 1”HEX BOLT

FIREWALLCOVER648169

HOLE NOT USED

(3) 1/4 x 3/4FLAT WASHER

EVAPORATOR INSTALLATIONON A WORK BENCH INSTALL (2) HEATER FITTINGS WITH PROPERLY LUBRICATED O-RINGS. (SEE FIGURE 18 PAGE 15, AND FIGURE 12 PAGE 12.)INSTALL (2) 1/4-20 x 1” HEX BOLT AND 1/4 PUSH NUT BOLT RETAINER ON EVAP REAR BRKT AS SHOWN IN FIGURE 12, PAGE 12.INSTALL EVAPORATOR FRONT & REAR MOUNTING BRACKETS ON EVAPORATOR USING (5) 1/4-20 x 1/2” HEX BOLTS AND TIGHTEN AS SHOWN IN FIGURE 11 BELOW & FIGURE 12,PAGE 12.LAY EVAPORATOR SUBCASE ON PASSENGER SIDEFLOOR BOARD. INSTALL A/C & HEATER HOSEON EVAPORATOR AS SHOWN IN FIGURE 13, PAGE 13 AND HOSE INSTALLATION ON PAGE 15.(NOTE: WRAP THE #10 FITTING CONNECTIONS WITH PRESS TAPE. SEE FIGURE 13, PAGE 13.)

1/4-20 x 1/2”HEX BOLT

FRONTEVAPORATOR

BRACKET647066

FIGURE 11

FIGURE 10

(3) 1/4-20 NUTS WITH

STAR WASHER

12



REAREVAPORATOR

BRACKET655000-VUB

(2) HEATERFITTINGS

(2) 1/4-20 x 1/2”HEX BOLT

(2) 1/4-20 x 1/2”HEX BOLT

BRACKET INSTALLATION CONT.

(2) 18290-VUB1/4-20 x 1” HEX BOLT

70-72 CHEVELLEw/o AC

MOUNTINGHOLES

FIGURE 12

(2) 189125-MUR1/4 PUSH NUTBOLT RETAINER

13



FIGURE 13

FIGURE 14

FIGURE 14a

EVAPORATOR INSTALLATION CONT.LIFT EVAPORATOR UNIT UP UNDER THE DASHBOARD. SECURE LOOSELY TO THE FIREWALL FROM THE ENGINE COMPARTMENT SIDE USING (2) 1/4-20 NUT AND FLAT WASHER, SEE FIGURE 14.SECURE THE FRONT EVAPORATOR MOUNTING BRACKET BETWEEN THE DASH BRACKET AND COWL BRACKET USING OEM SCREW. SEE FIGURE 14a.VERIFY THAT EVAPORATOR UNIT IS LEVEL AND SQUARE TO THE DASH, THEN TIGHTEN ALL MOUNTING BOLTS. (NOTE: TIGHTEN THE BOLT ON FIREWALL FIRST, THEN THE FRONT MOUNTING BRACKET OEM BOLT.)ONCE EVAPORATOR IS IN PLACE. ROUTE A/C & HEATER HOSE OUT KICK PANEL FRESH AIR CAP AND THROUGH FRESH AIR CAP.

#10 A/C HOSE

HOSECLAMPS

(2) 1/4-20 NUTw/ FLAT WASHER

HEATER HOSE

#6 A/C HOSE

PRESSTAPE

FRONT EVAPORATOR

BRKT647066

OEM BOLT

KICK PANELFRESH AIR

CAP

14



70-72 CHEVELLE w/o AC w/o ASTRO VENTS

INSTALL LOUVER HOUSINGS UNDER DASH AS SHOWN IN FIGURE 15 BELOW.

INSTALL LOUVERS IN HOUSING, SEE FIGURE 15 BELOW.

70-72 CHEVELLE w/o AC w/ ASTRO VENTS

INSTALL CENTER LOUVER UNDER DASH AS SHOWN IN FIGURE 16 BELOW

FOR ASTRO VENT HOSE ADAPTER INSTALLATION REFER TO PAGE 9.

(6) #8 x 1/2” PH PAN HEAD

SCREWS

(2) #8 x 1/2” PH PAN HEAD

SCREWS

FIGURE 15

FIGURE 16

15



LOCATE THE #8 COMPRESSOR A/C HOSE. LUBRICATE (2) #8 O-RINGS (SEE FIGURE 18, ABOVE) AND CONNECTTHE 135° FEMALE FITTING w/ 134a SERVICE PORT TO THE #8 DISCHARGE PORT ON THE COMPRESSOR.ROUTE THE STRAIGHT FEMALE FITTING TO THE #8 CONDENSER HARDLINE COMING THROUGH CORE SUPPORT. SEE FIGURE 19, PAGE 16. TIGHTEN EACH FITTING CONNECTION AS SHOWN IN FIGURE 18 ABOVE.LOCATE THE #10 COMPRESSOR A/C HOSE. LUBRICATE (2) #10 O-RINGS (SEE FIGURE 18, ABOVE) AND CONNECT THE #10 135° FEMALE FITTING w/134a SERVICE PORT TO THE #10 SUCTION PORT ON THECOMPRESSOR. ROUTE THE 90° FEMALE FITTING TO THE #10 EVAPORATOR. SEE FIGURE 13 PAGE 13 ANDFIGURE 19, PAGE 16. TIGHTEN EACH FITTING CONNECTION AS SHOWN IN 18 ABOVE. LOCATE THE #6 EVAPORATOR A/C HOSE. LUBRICATE (2) #6 O-RINGS (SEE FIGURE 18 , ABOVE) AND CONNECT THE STRAIGHT FEMALE FITTING TO THE #6 HARDLINE COMING THROUGH THE CORE SUPPORT FROM DRIER. ROUTE THE 90° FEMALE FITTING TO THE #6 EVAPORATOR. SEE FIGURE 13, PAGE 13 AND FIGURE 19 PAGE 16. TIGHTEN EACH FITTING CONNECTION AS SHOWN IN FIGURE 18, ABOVE. USE A #10 ADEL CLAMP TO SECURE THE #10 A/C HOSE TO ALTERNATOR BRKT AS SHOWN IN FIGURE 19, PAGE 16. SECURE THE ADEL CLAMP TO THE ALTERNATOR BRKT USING 10-32 x ½” PH PAN HEAD SCREWS w/ NUTS.

A/C HOSE INSTALLATIONSTANDARD HOSE KIT

LUBRICATING O-RINGS

HOLD WITHTHIS WRENCH

FOR A PROPER SEAL OF FITTINGS:INSTALL SUPPLIED O-RINGS AS SHOWNAND LUBRICATE WITH SUPPLIED OIL.

FEMALENUT

MALEINSERTO-RING

SUPPLIED OILFOR O-RINGS O-RING, INSTALLS

OVER MALE INSERTTO SWAGED LIP

#6 O-RING

#8 O-RING #10 O-RING

FIGURE 18

LOCATE EVAPORATOR DRAIN ON BOTTOM OF EVAPORATOR CASE.IN-LINE WITH DRAIN, LIGHTLY MAKE A MARKON THE FIREWALL MEASURE 1” DOWN AND2 1/2” TO THE LEFT AND DRILL A 5/8” HOLE THROUGH THE FIREWALL. SEE FIGURE 17 BELOW.INSTALL DRAIN HOSE TO BOTTOM OFEVAPORATOR UNIT AND ROUTE THROUGHFIREWALL. SEE FIGURE 17.

DRAIN HOSE INSTALLATION

FIGURE 17

EVAPORATORCASE1”2 ½”

DRAINHOSE

1”2 ½”

REFER TO SEPARATE INSTRUCTIONS INCLUDED WITH MODIFIED HOSE KIT. MODIFIED A/C HOSE KIT

TWIST WITHTHIS WRENCH

O-RING

16

1970-7

2 C

HEV

ELLE

w/o

AC


NO

TE:

VIN

TAG

E A

IR S

YSTE

MS

REQ

UIR

E(2

) 5/8

” H

OSE

NIP

PLE

S (N

OT

SUP

PLI

ED)

#6

HA

RDLI

NE

DRI

ER/C

ON

DEN

SER

35

36

8-V

CG

CO

MPR

ESSO

RSA

FETY

SW

ITC

H(B

INA

RY T

YPE)

SCRE

W O

N D

RIER

(REF

ER T

OC

ON

DEN

SER

INST

RUC

TIO

NS)

#8 C

ON

DEN

SER/

CO

MP

HA

RDLI

NE

091172

#8 C

ON

DEN

SER

HA

RDLI

NE

09169-F

FD

A/C

& H

EATE

R H

OSE

RO

UTI

NG

FIG

UR

E 1

9

FRO

M H

TR C

NTR

L V

LVTO

EV

APO

RATO

R

HO

SEC

LAM

PS

HEA

TER

HO

SE

FRO

M E

VAPO

RATO

R

TO W

ATE

R PU

MP

FRO

M IN

TAKE

MA

NIF

OLD

#1

0 A

DEL

CLA

MP

w/

10/3

2 x

1/2

”PA

N

HEA

D S

CRE

Ww

/ N

UT

TIE

WRA

P

R

HEA

TER

HO

SE(H

EATE

R C

NTR

LVA

LVE/

INTA

KE)

#6

DRI

ER/

CO

RE H

ARD

LIN

E0

91

17

3

#6

HO

SE0

96

07

2

#1

0 S

UC

TIO

NH

OSE

09

60

73

#8

DIS

CH

ARG

EH

OSE

09

60

62

HEATER HOSE & HEATER CONTROL VALVE INSTALLATION

ROUTE A PIECE OF HEATER HOSE FROM THE WATER PUMP TO THE TOP HEATER FITTING OF HEATER CORE AS SHOWN IN FIGURE 13 PAGE 13 AND FIGURE 19 BELOW. SECURE USING HOSE CLAMPS

ROUTE A PIECE OF HEATER HOSE FROM THE INTAKE TO THE BOTTOM HEATER FITTING OF HEATER COREAS SHOWN IN FIGURE 13 PAGE 13 AND FIGURE 19 BELOW. NOTE: INSTALL HEATER CONTROL VALVE IN-LINE WITH INTAKE MANIFOLD (PRESSURE SIDE) HEATER HOSE, SECURE USING HOSE CLAMPS AS SHOWN IN FIGURE 19, BELOW. NOTE: PROPER FLOW DIRECTION.

17



GLOVE BOX INSTALLATION

MODIFY GLOVE BOX AS SHOWN IN FIGURE 21 BELOW.INSTALL (4) S-CLIPS IN GLOVE BOX CAP, SEE FIGURE 21a BELOW.INSTALL GLOVE BOX CAP. SEE FIGURE 21a BELOW.

INSTALL DUCT HOSES AS SHOWN IN FIGURE 22, PAGE 18ROUTE A/C WIRES THROUGH 3/8” GROMMET AS SHOWN IN FIGURE 20(12 VOLT/ GROUND/ BINARY SWITCH/ HEATER VALVE).INSTALL CONTROL PANEL ASM.PLUG THE WIRING HARNESS IN THE ECU MODULE ON SUB CASE AS SHOWN IN FIGURE 22, PAGE 18(WIRE ACCORDING TO WIRING DIAGRAM ON PAGE 19 AND 20.)

REINSTALL ALL PREVIOUSLY REMOVED ITEMS (BATTERY TRAY, BATTERY & INNER FENDER).FILL RADIATOR WITH AT LEAST A 50/50 MIXTURE OF APPROVED ANTIFREEZE AND DISTILLED WATER.IT IS THEOWNER'S RESPONSIBILITY TO KEEP THE FREEZE PROTECTION AT THE PROPER LEVEL FOR THE CLIMATE INWHICH THE VEHICLE IS OPERATED. FAILURE TO FOLLOW ANTIFREEZE RECOMMENDATIONS WILL CAUSEHEATER CORE TO CORRODE PREMATURELY AND POSSIBLY BURST IN AC MODE AND/OR FREEZING WEATHER,VOIDING YOUR WARRANTY.DOUBLE CHECK ALL FITTINGS, BRACKETS AND BELTS FOR TIGHTNESS.VINTAGE AIR RECOMMENDS THAT ALL AC SYSTEMS BE SERVICED BY A CERTIFIED AUTOMOTIVE AIRCONDITIONING TECHNICIAN. EVACUATE THE SYSTEM FOR A MINIMUM OF 45 MINUTES PRIOR TO CHARGING AND LEAK CHECK PRIORTO SERVICING. CHARGE THE SYSTEM TO THE CAPACITIES STATED ON THE INFORMATION PAGE (PAGE 4) OF THIS INSTRUCTION MANUAL. SEE OPERATION OF CONTROLS PROCEDURES PAGE 21.

FINAL STEPS

FIGURE 20FIGURE 21

FIGURE 21a

2”

(4) S-CLIPS

GLOVE BOX CAP

626670

TOP OFGLOVE

BOX

CUT OFF 2” (DISCARD)

GROMMET33144-VUI

18



CONTROL PANEL & DUCT HOSE ROUTING

CONTROL PANEL

BACK SIDEOF PC BOARD

ASSEMBLY

HARNESSFROM ECU

232007-VUR

PLUGFROM

WIRINGHARNESS

232001-VUR

DRIVER SIDE LOUVER

2 ½” x 32”

PASS. SIDE LOUVER

2 ½” x 36”

UNDERDASH CENTER LOUVER

2” x 20”

DEFROST DUCTDR. SIDE2” x 18”

DEFROST DUCTPASS. SIDE2” x 12”

FIGURE 22

19



WHT/GRN

WHT/YELWHT/RED

RED

WHTBACKLIGHT NEG

FAN WIPER

MODE WIPER

TEMP WIPER

5V-SW

GND

BACKLIGHT POS

AC ANNUNCIATOR

PRE-WIRED

GEN IV WIRING DIAGRAMREV D, 5/6/2014

GEN IV ECU

PROGRAM

Wiring Diagram

TEMP

MODE

FAN

A/C(IF USED)

232007-VUR

232002-VUA

** CIRCUITBREAKER30 AMP

*** WIDE OPENTHROTTLESWITCH

(OPTIONAL)

* DASH LAMP(IF USED)

Dash Lamp Is Used Only With Type 232007-VUR Harness.Warning: Always Mount Circuit Breaker As Close to the Battery As Possible. (NOTE: Wire BetweenBattery and Circuit Breaker Is Unprotected and Should Be Carefully Routed to Avoid a ShortCircuit).Wide Open Throttle Switch Contacts Close Only at Full Throttle, Which Disables A/C Compressor.

JF8

BLK

ORA

TAN

VIEWED FROM WIRE SIDE

••

•

HEATERCONTROL VALVE

20



RED

CIRCUIT BREAKER30 AMP

+

+

-

BLACK

REDWHITE

RED

CHASSIS GROUND

A/CCOMPRESSOR

RELAY

Ignition Switch:

Dash Light:

NOTE: MOUNT RELAYIN DESIRED LOCATION

UNDER DASH

GREEN

FIREWALL

BLUE

BLUE

RED &

WHITE

VIOLET

(IGNITION HOTTERMINAL)

IGNITION SWITCH

DASH BACK LIGHT+0-12vTAN

GRAY

BLUE

WHITE

WHITE

REDRED

WHITE

COMPRESSOR

BATTERY

NOTE: CONNECT WHITEWIRES DIRECTLY TO

(-) BATTERY TERMINAL

BATRUN

12V

RED GREEN

RED

RED

BLUE

LATCH

BLACK

BINARYSAFETYSWITCH

YELLOW

ORANGE

WIRING HARNESS

Violet 12V Ign Switch Source (Key On Accessory) Position Must Be Switched.

Tan Wire Used Only With Vintage Air Supplied Control Panel With LED Back Light.

Binary: Connect As Shown (Typical Compressor Wiring). Be Sure Compressor Body Is Grounded.

Trinary Switch: Connect According To Trinary Switch Wiring Diagram.

Install With Servo Motor Facing Down, As Shown. Note Flow Direction Arrow Molded Into Valve Body, And Install Accordingly.

White Must Run To (-) Battery. Red May Run To (+) Battery Or Starter. Mount Circuit Breaker As Close to Battery As Possible.

Heater Control Valve:

Binary/Trinary & Compressor:

Circuit Breaker/Battery:

CONTROL WIRING HARNESS

NOTE: YELLOW & ORANGE

COMING FROM HARNESS ARE NOT

USED.

WIRING HARNESS

GRAY WIRE IS USED FOR PROGRAMING CONTROLS

IF APPLICABLE

WIRING HARNESS

Gen IV Wiring Connection Instruction

HEATERCONTROL VALVE

WARNING: ALWAYS MOUNT CIRCUIT BREAKER

AS CLOSE TO THE BATTERY AS POSSIBLE. (NOTE: WIRE BETWEEN BATTERY AND CIRCUIT BREAKER IS UNPROTECTED

AND SHOULD BE CAREFULLY ROUTED TO AVOID A SHORT CIRCUIT).

NOTE: HEATER CONTROL VALVE CONNECTION AND CHASSIS GROUND MAY BE LOCATED ON EITHER SIDE OF THE FIREWALL. ENSURECONNECTOR IS LATCHED

FIRMLY.

21



OPERATION OF CONTROLS

A/C THERMOSTAT IN DEF MODE SLIDE THE

THERMOSTAT LEVER ALL THEWAY TO THE LEFT TO THE

HOT POSITION, FOR MAXIMUM HEATING(SLIDE LEVER LEFT OR RIGHT TO

ADJUST DESIRED TEMPERATURE)

LEVER MODE SLIDE THE LEVER TOTHE “DEF” POSITION

LEVER

DEFROST MODE

MODELEVER THERMOSTAT

SYSTEM OFF

BLOWER SPEED

DASH

HOT

BLOWER SPEED THIS LEVER CONTROLS

THE BLOWER SPEED, FROM OFF TO HI

A/C THERMOSTAT IN A/C MODE SLIDE THE THERMOSTAT LEVER ALL THE WAY RIGHT TO THE COLD POSITION, FOR MAXIMUM COOLING. BLUE AC INDICATORLIGHT WILL COME ON ONLY WHEN AC COMPRESSORIS ENGAGED (SLIDE LEVER LEFT OR RIGHT TO ADJUST DESIRED TEMPERATURE)

LEVER MODE SLIDE THE LEVER TO

THE “DASH” POSITION

LEVER

A/C MODE

DASH

HOT

BLUE AC INDICATOR

LIGHT

A/C THERMOSTAT

THERMOSTAT LEVER ALL THEWAY TO THE LEFT TO THE

HOT POSITION, FOR MAXIMUM HEATING(SLIDE LEVER LEFT OR RIGHT TO

ADJUST DESIRED TEMPERATURE)

LEVER MODE SLIDE THE LEVER TOTHE “FLR” POSITION

(SLIDE THE LEVER TO THE LEFT OR RIGHT,

TO ADJUST DESIRED DASH/ FLR/ DEF LOCATION

LEVER

HEAT MODE

DASH

HOT

DASH

HOT

NOTE: WHEN BATTERY POWER IS FIRST CONNECTED TO THE ECU, THE COMPUTER GOES THROUGH AN INITIALIZATION SEQUENCE.THIS INITIALIZATION MAY TAKE UP TO 30 SECONDS. DURING INITIALIZATION THE BLOWER WILL NOT OPERATE, BUT THE DOORS INSIDE THE UNIT WILL BE OPERATING. A LOW BATTERY OR DISCONNECTING THE BATTERY MAY ALSO TRIGGER ARE-INITIALIZATION. DURING START UP, A LOW BATTERY MAY DROP BELOW 7 VOLTS, TRIGGERING RE-INITIALIZATION.

IN HEAT MODE SLIDE THE

22

1970-7

2 C

HEV

ELLE

w/o

AC


Sym

pto

m

C

on

dit

ion

C

heck

s

Act

ion

s

N

ote

s

Blo

wer

sta

ys o

n

hig

h s

pee

d w

hen

ig

nitio

n is

on.

1a.

No o

ther

funct

ions

work

.

Chec

k fo

r dam

aged

pin

s or

wires

in c

ontr

ol hea

d p

lug.

Ver

ify

that

all

pin

s ar

e in

sert

ed into

plu

g.

Ensu

re t

hat

no

pin

s ar

e ben

t or

dam

aged

in E

CU

.

Chec

k fo

r dam

aged

gro

und

wire

(white)

in c

ontr

ol hea

d

har

nes

s.

Ver

ify

continuity

to c

has

sis

gro

und w

ith w

hite

contr

ol

hea

d w

ire

at v

ario

us

poin

ts.

Loss

of gro

und o

n t

his

wire

render

s co

ntr

ol hea

d

inoper

able

.

All

oth

er f

unct

ions

work

.Chec

k fo

r dam

aged

blo

wer

sw

itch

or

pote

ntiom

eter

and

asso

ciat

ed w

irin

g.

Blo

wer

sta

ys o

n

hig

h s

pee

d w

hen

ig

nitio

n is

on o

r off.

Unplu

g 3

-wire

BSC c

ontr

ol

connec

tor

from

ECU

. If

blo

wer

sh

uts

off,

ECU

is

eith

er

impro

per

ly w

ired

or

dam

aged

.

Be

sure

the

smal

l, 2

0 G

A w

hite

gro

und w

ire

is c

onnec

ted

to t

he

bat

tery

gro

und p

ost

. If

it

is,

repla

ce t

he

ECU

.

Unplu

g 3

-wire

BSC c

ontr

ol

connec

tor

from

ECU

. If

blo

wer

st

ays

runnin

g,

BSC is

eith

er

impro

per

ly w

ired

or

dam

aged

.

Chec

k to

ensu

re t

hat

no B

SC w

irin

g is

dam

aged

or

short

ed t

o v

ehic

le g

round.

The

BSC o

per

ates

the

blo

wer

by

gro

und s

ide

puls

e w

idth

modula

tion s

witch

ing.

The

posi

tive

wire

to t

he

blo

wer

will

alw

ays

be

hot.

If th

e “g

round”

side

of

the

blo

wer

is

short

ed t

o c

has

sis

gro

und,

the

blo

wer

will

run o

n H

I.

Rep

lace

BSC (

This

will

req

uire

rem

oval

of

evap

ora

tor

from

veh

icle

).N

o o

ther

par

t re

pla

cem

ents

sh

ould

be

nec

essa

ry.

Com

pre

ssor

will

not

turn

on

(All

oth

er funct

ions

work

).

2.

Sys

tem

is

not

char

ged

.Sys

tem

must

be

char

ged

for

com

pre

ssor

to e

ngag

e.Char

ge

syst

em o

r byp

ass

pre

ssure

sw

itch

.

Dan

ger:

Never

byp

ass

sa

fety

sw

itch

wit

h

en

gin

e r

un

nin

g.

Seri

ou

s in

jury

can

resu

lt.

Sys

tem

is

char

ged

.

1b

.

Tro

ub

lesh

oo

tin

g G

uid

e

Chec

k fo

r fa

ulty

A/C

pote

ntiom

eter

or

asso

ciat

ed

wirin

g (

Not

applic

able

to 3

-pot

contr

ols

).

Chec

k fo

r dis

connec

ted o

r fa

ulty

ther

mis

tor.

Chec

k co

ntinuity

to g

round o

n w

hite

contr

ol hea

d w

ire.

Chec

k fo

r 5V o

n r

ed c

ontr

ol hea

d w

ire.

Chec

k 2-p

in c

onnec

tor

at E

CU

housi

ng.

To c

hec

k fo

r pro

per

pot

funct

ion,

chec

k vo

ltag

e at

w

hite/

blu

e w

ire.

Voltag

e sh

ould

be

bet

wee

n 0

V a

nd

5V,

and w

ill v

ary

with p

ot

leve

r posi

tion.

Dis

connec

ted o

r fa

ulty

ther

mis

tor

will

cau

se

com

pre

ssor

to b

e dis

able

d.

Red

wire

at A

/C p

ot

should

hav

e ap

pro

xim

atel

y 5V

with ignitio

n o

n.

White

wire

will

hav

e co

ntinuity

to

chas

sis

gro

und.

White/

Blu

e w

ire

should

var

y bet

wee

n 0

V a

nd 5

V w

hen

le

ver

is m

oved

up o

r dow

n.

3. Com

pre

ssor

will

not

turn

off

(A

ll oth

er funct

ions

work

).

Chec

k fo

r fa

ulty

A/C

pote

ntiom

eter

or

asso

ciat

ed

wirin

g.

Chec

k fo

r fa

ulty

A/C

rel

ay.

Rep

air

or

repla

ce p

ot/

contr

ol w

irin

g.

Rep

lace

rel

ay.

See

blo

wer

sw

itch

chec

k pro

cedure

.

23

1970-7

2 C

HEV

ELLE

w/o

AC


Sym

pto

m

C

on

dit

ion

Ch

eck

s

Act

ion

s

N

ote

s

Sys

tem

will

not

turn

on,

or

runs

inte

rmitte

ntly.

4.

Work

s w

hen

engin

e is

not

runnin

g;

shuts

off w

hen

en

gin

e is

sta

rted

(T

ypic

ally

ear

ly G

en I

V,

but

poss

ible

on a

ll ve

rsio

ns)

.

Nois

e in

terf

eren

ce f

rom

either

ig

nitio

n o

r al

tern

ator.

Inst

all ca

pac

itors

on ignitio

n c

oil

and a

lter

nat

or. E

nsu

re

good g

round a

t al

l poin

ts.

Rel

oca

te c

oil

and a

ssoci

ated

w

irin

g a

way

fro

m E

CU

and E

CU

wirin

g.

Chec

k fo

r burn

edor

loose

plu

g w

ires

.

Ver

ify

connec

tions

on p

ow

er

lead

, ig

nitio

n lea

d,

and b

oth

white

gro

und w

ires

.

Ver

ify

pro

per

met

er f

unct

ion b

y ch

ecki

ng t

he

conditio

n o

f a

know

n g

ood b

atte

ry.

Ignitio

n n

ois

e (r

adia

ted o

rco

nduct

ed)

will

cau

se t

he

syst

em t

o s

hut

dow

n d

ue

tohig

h v

oltag

e sp

ikes

. If

this

is s

usp

ecte

d,

chec

k w

ith a

qual

ity

osc

illosc

ope.

Spik

esgre

ater

than

16V w

ill s

hut

dow

n t

he

ECU

. In

stal

l a

radio

cap

acitor

at t

he

posi

tive

post

of th

e ig

nitio

nco

il (S

ee r

adio

cap

acitor

inst

alla

tion b

ulle

tin).

A

faulty

alte

rnat

or

or

worn

out

bat

tery

can

als

o r

esult

in t

his

conditio

n.

Will

not

turn

on u

nder

an

y co

nditio

ns.

Ver

ify

bat

tery

voltag

e is

gre

ater

than

10 v

olts

and les

sth

an 1

6.

Loss

of m

ode

door

funct

ion.

No m

ode

chan

ge

at a

ll.Chec

k fo

r dam

aged

mode

switch

or

pote

ntiom

eter

and

asso

ciat

ed w

irin

g.

Part

ial fu

nct

ion o

f m

ode

doors

.

Typic

ally

cau

sed b

y ev

apora

tor

housi

ng

inst

alle

d in a

bin

d in t

he

vehic

le.

Be

sure

all

mounting loca

tions

line

up

and d

on’t h

ave

to b

e fo

rced

in

to p

osi

tion.

Blo

wer

turn

s on

and o

ff r

apid

ly.

6.

Bat

tery

voltag

e is

at

leas

t 12V.

Chec

k fo

r at

lea

st 1

2V a

t ci

rcuit b

reak

er.

Ensu

re a

ll sy

stem

gro

unds

and p

ow

er c

onnec

tions

are

clea

n a

nd t

ight.

Bat

tery

voltag

e is

les

s th

an 1

2V.

5.

Tro

ub

lesh

oo

tin

g G

uid

e (

Co

nt.

)

Chec

k fo

r fa

ulty

bat

tery

or

alte

rnat

or.

Char

ge

bat

tery

.

Sys

tem

shuts

off b

low

er a

t 10V.

Poor

connec

tions

or

wea

k bat

tery

can

cau

se

shutd

ow

n a

t up t

o 1

1V.

7. When

ignitio

n is

turn

ed o

n,

blo

wer

m

om

enta

rily

co

mes

on,

then

sh

uts

off.

This

occ

urs

with t

he

blo

wer

sw

itch

in

the

OFF

posi

tion.

This

is

an indic

ator

that

the

syst

em h

as b

een r

eset

. Be

sure

the

red p

ow

er w

ire

is o

nth

e bat

tery

post

, an

d n

ot

on a

sw

itch

ed s

ourc

e. A

lso,

if

the

syst

em is

pulle

d b

elow

7V f

or

even

a s

plit

sec

ond,

the

syst

em w

ill r

eset

.

Run r

ed p

ow

er w

ire

direc

tly

to b

atte

ry.

Chec

k fo

r posi

tive

pow

er a

t hea

ter

valv

e gre

en w

ire

and

blo

wer

red

wire.

Chec

k fo

r gro

und o

n c

ontr

ol hea

d w

hite

wire.

Chec

k fo

r obst

ruct

ed o

r bin

din

g m

ode

doors

.

Chec

k fo

r dam

aged

ste

pper

m

oto

r or

wirin

g.

Err

atic

funct

ions

of

blo

wer

, m

ode,

te

mp,

etc.

Chec

k fo

r dam

aged

sw

itch

or

pot

and a

ssoci

ated

wirin

g.

Rep

air

or

repla

ce.

8.

KIC

K PA

NEL C

UT-O

UT

TEMPLA

TE

68-72 C

HEVELLE

W

/O A

C

CUT ALONGDOTTED LINE

CUT ALONGDOTTED LINE

CUT THIS AREA

24



** BEFORE BEGINNING INSTALLATION OPEN ALL PACKAGES AND CHECK CONTENTS OF SHIPMENT. PLEASE REPORT ANY SHORTAGES DIRECTLY TO VINTAGE AIR WITHIN 15 DAYS. AFTER 15 DAYS, VINTAGE AIR WILL NOT BE RESPONSIBLE FOR MISSING OR DAMAGED ITEMS.

EVAPORATOR KIT561071

1.2.

11

762169784171

1

ACCESSORY KIT784171

2

GEN IV 4 VENTw/ 2 & 2 ½ EVAP

SUB CASE762169

GEN IV 4 VENT w/ 2 & 2 ½ EVAP. SUB CASE

EVAPORATOR KIT PACKING LISTNo. QTY. PART No. DESCRIPTION

1970-72 CHEVELLE w/o AC ACC. KIT

NOTE: IMAGES MAY NOT DEPICT ACTUAL PARTS AND QUANTITIES.REFER TO PACKING LIST FOR ACTUAL PARTS AND QUANTITIES.

OFF

DASH

HOT

FLR

HI

DEF

COLD

AC

1970-72 chevelle - speedway motorsstatic.speedwaymotors.com/pdf/725561071.pdf3 197072 w/o ac 901071...

Documents