Hudson 1955 Rambler, Technical & Service Manual

Page: 261 / 292

ALL SEASON AIR CONDITIONING SYSTEM 11
Compressor
The compressor is designed to be capable
of having sufficient capacity at variable
speeds. A two cylinder reciprocating type
compressor is used. It is mounted on the
engine driven by a "V" type belt from the
engine crankshaft dynamic balancer pulley.
An idler shaft is used to adjust belt
tension. The idler shaft is used to drive
the power steering pump when equipped with
power steering.
The idler shaft or power steering pump,
whichever the case may be, is adjustable
by a slotted link. Some applications call
for adjusting the compressor mounting
bracket in addition to the idler shaft.
The belts require a tight adjustment.
Reduce the "flex" to a minimum.
The capacity of a compressor is gener-
ally stated in terms of "tons of refriger-
ation" or B.T.U. per hour. A ton of refrigeration
is the cooling effect resulting from the
melting of 2,000 pounds of ice in 24
hours or one ton equivalent to a cooling
rate of 12,000 B.T.U. per hour.
The "All Season Air Conditioning
System" has a capacity of 1-/2 tons at
30 M.P.H. Thus it is capable of removing
heat from the interior of the car
(including the fresh air admitted) at
the rate of 18,000 B.T.U. per hour.
The primary purpose of the compressor
is to increase the relatively low
pressure of the gas returning from the
evaporator to a high pressure.
The vapor temperature is increased by
compression to get the boiling point of
the Freon-12 higher than the tempera-
ture of the condensing medium. There-
fore, the cooler temperature of the air
flowing across the condenser core will
cool and condense the Freon vapor to
liquid.
FIGURE 13— Continuous Air Conditioning Cycle "Rambler" Series