Cadillac 60 Series 1963 Shop Manual page 393

13-12
HEATING AND AIR CONDITIONING
10. Install seat back top molding.
11. Install back seat cushion.
12. Connect heater hoses underneath car. Fill
cooling system.
3. Loosen set screws on control knobs and re-
move knobs, Fig. 13-7.
4. Remove temperature control and blower
motor switch from mounting plate in arm rest
assembly.
12. Heater Controls—Rear
Removal and Installation
(75 Series Cars Only)
a. Removal
1. Remove rear quarter arm rest assembly,
right side, as described in Note lla, Steps 2
through 9.
2. Disconnect bowden cable from temperature
control and electrical connector from blower
motor switch.
b. Installation
1. Install temperature control and blower motor
switch in arm rest mounting plate.
2. Install control knobs on shafts and tighten
set screws.
3. Install bowden cable on temperature control
and connect electrical connector to blower motor
switch.
4. Install rear quarter arm rest assembly as
described in Note lib, Steps 3 through 11.
AIR CONDITIONER
The major components of the 1963 Air Condi-
tioner system, Fig. 13-11, are the compressor,
condenser, dehydrator-receiver, expansion valve,
evaporator, suction throttling valve, blower as-
sembly, and control panel. The components are
dash-mounted with the exception of the compres-
sor, condenser and receiver; and the rear evapor-
ator and blower assembly in 75 series cars, Fig.
13-12.
The Air Conditioner permits the selection of
either 100% outside air or a combination of 20%
outside air mixed with 80% recirculated air. The
inter-related heating and Air Conditioning sys-
tems on 60 and 62 series cars were designed to
provide maximum comfort control for all condi-
tions. The joint operation of the systems is made
possible by use of vacuum power units that actuate
air valves controlling the circulation and mixing
of heated and cooled air.
Outside air for the front unit is supplied through
the cowl vent, located directly below the wind-
shield on all 1963 Cadillac cars. Inside air is
drawn from the passenger compartment into the
blower assembly through a dash opening located
just behind the blower assembly.
Cooled air is delivered to the passenger com-
partment through three air outlets in the instru-
ment panel. An outlet is located at each end of
the instrument panel and another at the center.
Direction of air flow through the end outlets may
be controlled by turning the outlets, which contain
fixed angle vanes, in any direction desired. The
end outlets also may be shut off by turning the
serrated knob beneath the outlet. The center out-
let can be shut off or set to direct air flow up
or down.
On 75 series cars a second cooling unit, located
in the trunk compartment, provides additional
cooling to compensate for the larger car interior
and additional number of passengers. Outside
air is supplied to this rear unit through air scoops
located on top of each quarter panel near the rear
window. The additional cool air is delivered to
the rear passenger compartment through con-
cealed roof ducts leading from the rear evaporator
to two outlet grilles in the headliner above the
rear seat.
MAJOR COMPONENTS OF SYSTEM
Compressor (Fig. 13-13)
The 1963 Cadillac uses a six-cylinder axial
type refrigerant compressor. The compressor
is made up of three double-acting pistons mounted
axially around the compressor shaft, each of
which operate in a front and rear cylinder as-
sembly. The pistons are actuated by a swash
plate that is pressed on the compressor shaft.
The cylinders have a bore diameter of 1-1/2
inches and a stroke of 1-1/8 inches, providing a
total piston displacement of 12.2 cubic inches.