Cadillac 54-6219 1954 Shop Manual page 377

16-A- 22
AIR CONDITIONER
7. Evacuate the entire systemas previously des
cribed and completely recharge itwithrefrigerant.
Notes 6b and 7b.
8. Test for leaks.
22 Replacing the Receiver
1. Purge the system as described in Note 5.
3. Disconnect the high pressure outlet line from
the receiver.
4. Remove the recuiver mounting nuts, wash
ers, and receiver.
5. Instalithe new receiver by reversing the pro
cedure for removal.
Inlet line must be connected
to 'IN' fitting of receiver.
2. Disconnect the high
at the receiver.
pressure inlet line flare 6. Evacuate the entire system and rechargewith
refrigerant. Note 6b and 7b. Test for leaks.
AIR CONDITIONER SERVICE DIAGNOSIS
CONDITION
CAUSE CORRECTION
A. POOR COOLING
Blowers not operating 20 Amp, fuse blown
A/C Switch in "off" position
A/C Switch inoperative
Blower rheostats inoperative
Wire broken or loose connec-
tions
Blower motor defective
Blower motor rotates in wrong
direction
Check for short, Replace fuse
Instruct owner
Replace switch
Replace rheostats
Inspect connections and wires
Repair or replace motor
Replace motor
Restricted air flow
Filters in evaporator clogged
with dirt and/or other foreign
material
Outside air scoops restricted
Roof ducts restricted
Air flow under rear seat re-
stricted
Condenser clogged or restric-
ted.
Remove and clean filters
Clean out scoops
Remove restriction
Remove restriction
Remove obstruction
Incorrect quantity of refriger-
ant in system
Not enough refrigerant
Too much refrigerant
Check for leaks
-
add partial
charge
-
Note 7c
Bleed off excess refrigerant
-
Note 9
Refrigerant flow to cooling coil
incorrect
Expansion valve improperly ad
justed
Power element does not contact
pressure line properly
Restriction on liquid line be
tween receiver and cooling
coil
Check adjustment
-
Note 14. Re
place if necessary
Position element correctly and
tighten securely.
Replace line or receiver tank
Power element discharged Replace expansion valve.