Cadillac 54-6219 1954 Shop Manual page 358

AIR CONDITIONER
the supply of rctrigaraot according to the require
-
ments of ftc cooling coil.
'flie en ode n lug unit iiica ted undo r the hood,
consists of the- compressor, wnden,ser, and re-
ceiver.
The compressor is rigidly mounted on brackets
at Lbs front of
the
rlghLcylinderhlock sod is driven
b iwo belts off time crankshaft pulley. Here, tow
pressure refrigerant vapor from the
cooling cod is
compressed to a *:iiglm pressure, high temfrature
vapor and directed to the condoitser
Jo the condenser, located in
front of the
rodiator
core, the high temperatute vapor is cooled by
OLitside air and converted tn a liquid
-
lhie liquid
refrigerant collects in the receiver which
is
itiounted below
the lower radiaLor air deflector.
The liquid refrigerant is siored in he receiver
and is available rot use in the cooling ciii] when
required. Fig. 16A-l.
*flie 1954 compressor
is
controlled by a solenoid
operated dutch-pulley assembly, mounted at the
front end of Lhe compressor, Pig. 16A-2.
The clutch assembly is eplined to the compressor
shaft and drives tIle compressor when the clutch is
engaged by the action of the solenoid.
The assembly consists of the pulley housing,
clutch plates bearing, teaser spring, actuatinghal is
end front cover. Pig. LflA-3.
Pulley Housing
-
acts as a clutch housing and
has e sealed hail bearing pressed into the inner
diameter of the pulley. The ball hearing is retaloed
at the rear side by a shoulder in the hearing cavity.
Tlai an Ler frcmt:. ra Ce of bear i:ig is retained b a
Trt,arc lock ring. When pulley and hearing are in
stalled eu rho compressor shaft, the pulley is free
to to talc without turn jug the shaft. Another re tsiuler
ring is snapped into a gronve in the shaft
to
retain
the heoring and pidley assembly on the shaft,
Clutch plates
-
two clutch pierce are used: One
cluLch plate is counterweighted, and the orher is
known as the clutch plate -actuator. The cowitor
-
weight pi ate ha.e a splined center which matches the
aplines
on Lhe compressor shaft. A flat ring of
I rAe' ion niece riol is sanded Lu one face of the pie te
whirli,
elten pressed agoinst its mating surface
I,
the ptillcy htitising, tranemiL :Iia drrving power
ro the compressor shaft
-
Weighrs ore riveted to
the place to balance tha pulioy end of the cornpres.
sor.
The actuatnr plate is similar to the counter
-
weight plate
-
It also has a flat ring of frictional
tiuterial hooded to one face ci the plate, which
engages the front cover of the clutch. The clutch
counter -weight plate and aernator plate is con
-
strucrc!d with three tear drop ype depressions.
In the center of the sctuator patc is
C
pin, the
small diameter eon of which firs in the compressor
shaft hole. A TEASER SPRING which fits in the
shaft hole keeps the
M0 from
going all the way into
the hole, except under pressure applied to the
large end of the pin,
Actuating Dads
-
When the clutch actuator plate
is installed on the shaft, three hal is which
fit
in
the tear drop depressions space the two clutch
plates in relation Lu each other, As can he visua
-
used, when the balls are in the deepest portion of
the depressions, the twn plates are clnse together
and when rIte acolating plate is roated, the hells
Psi
icy
--
Tnic
Spri
an
16-A-S
F1. 16A-2 Ciofth Sleooid
Boil--.
Lark
Woska
Cotri
Pinis-
-
Ckith Pinla
umid
Counie,-Weie imt
Asiemi*iy
Ltek
RingiN
SnI
Bendao
4
cisith
Pinia
aid
Atmjnio,
Atieinbiy
--Cern p
[cLint
Shall
Fig, I6A.-3
Clutrh Oiiier:ied