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24-36
AIR CONDITIONING
(2)
Install the inner rotor on the drive shaft, en-
gaging the drive.
(3) Install the outer rotor and rotate it until it will
slide forward over the inner rotor cams. Turn the
compressor crankshaft with the oil pump in this posi-
tion to determine that the rotors do not bind.
(4)
Install the oil pump cover plate and oil seal.
(5) Tighten the bolts
10 to 13 foot-pounds torque.
(6) Rotate the crankshaft again to assure free
op-
eration.
EXPANSION VALVE, HEATER CORE
REPLACEMENT
AND EVAPORATOR, AND BLOWER-
Expunsion Valve Removal
The system must be completely discharged before
opening any of the refrigerant lines.
(1) Remove the equalizer line from the evaporator
suction line fitting.
(2) Disconnect the valve from the % inch inlet
line and from the
4 2
inch outlet line. Use two
wrenches to loosen each of these connections.
(3) From the evaporator engine-side housing, care-
fully pull the thermal bulb (Fig.
50)
from the well
located inside the evaporator housing.
lnstallution
Clean the thermal bulb well, wedging shims and
thermal bulb before installing the expansion valve.
The valve will not function properly unless there is
a good thermal contact between the bulb and its well.
Clean parts and a tight
fit
of the bulb in the well
will insure a good thermal contact.
(1) Install the thermal bulb, making sure it is a
tight mechanical fit in the well.
(2)
Lubricate all expansion valve and line fittings
with clean refrigerant oil. Install the expansion valve,
using
two
wrenches to prevent rotation and twisting
of the lines.
(3) Connect the equalizer tube to the fitting on the
evaporator suction line.
(4)
Using two wrenches, inspect all connections for
tightness.
After the expansion valve is installed, it must be
completely tested. Then the system must be tested
for leaks and recharged.
Heuter Core Evuporutor Assembly
Removal from Vehicle
The heater core and evaporator are compactly
packaged forward of the instrument panel and must
be removed as a single unit. The system must be com-
pletely discharged before opening any of the refrig-
erant lines, drain the cooling system. Remove the
front carpet for additional clearance.
(1) Disconnect the battery and remove the air
cleaner.
(2) Disconnect the equalizer line from the evapo-
rator suction line fitting. Disconnect the
9 4
inch inlet
line, the
4 2
inch outlet line, and remove the expan-
sion valve. Cap all the refrigerant lines to prevent the
entrance of dirt and moisture.
(3) Disconnect the heater hoses, plate and seal, vac-
uum hose from the water valve and push through the
firewall.
(4)
Remove the drain tubes, two nuts and washers
from the studs, and mounting bolt.
(5) Remove the sound deflector cover under the
glove box, remove the glove box assembly, radio grille
and speaker.
(6) Remove the blower motor flexible duct, upper
and side cooler tubing.
(7)
Remove the temperature control cable from the
thermostat, the vacuum hose connectors from the
push button switch, the blower switch and the engine
vacuum hose.
( 8 )
Remove the electrical wires from the resistor
block and relay.
(9) Remove the 2 mounting brackets, one on the
top center and one on the upper left side.
(10) Remove the assembly with the blower motor
as a single unit.
Heater Core Removal
(1) Remove the vacuum hoses from the thermostats
and the water valve vacuum block from the switch.
(2)
Loosen the side outlet actuator mounting nuts,
disconnect the retainer clip from the rod and remove
the actuator.
(3) Remove the linkage from the side outlet door
shaft.
(4)
Loosen the upper outlets mounting nuts, dis-
connect the retainer clip from the rod and remove
the actuator.
(5)
Remove the sheet metal screws and remove
the cover.
(6)
Remove the fillet from the lower right corner
of
the case.
CASE
HEATER CORE
I
HEATER D O O R
62x683
Fig. SI-Removing
Heater Core
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