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HEATER AND AIR CONDITIONING 1A-61
INSERT CAPILLARY
BETWEEN FINS AT
ARROW
Fig. 84—Thermostatic Switch Capillary Installation
All-Weather System (Thermostatic Switch Only)
Chevy II
Replacement (See Fig. 85)
1. Remove both control knobs and control stem bezels
from the evaporator assembly.
2. Remove the face plate attaching screws located in
the outer ball outlets and lift off the face plate.
3. Remove the two thermostatic
switch attaching
screws.
4. Disengage the plastic plug attaching the thermostatic
switch capillary tubing to the face of the evaporator
core (fig. 84).
5. Draw the switch out of the case through the face plate
opening, disconnecting the electrical connectors.
6. Reinstall the new switch by reversing the removal
procedure.
Fig. 85—Thermostatic Switch Removal
unit as outlined under
ALL-WEATHER-PULL CABLE
All-Weather System
Chevy II
Removal
1. Remove the evaporator
EVAPORATOR.
2. Remove the screws which attach the front and rear
case halves.
3. Remove clamp from the evaporator pipes and sep-
arate case halves.
4. Remove face plate retaining screws located in outer
ball outlets.
5. Remove control knobs and retaining nuts.
6. Remove face plate.
7. Remove cable to case retaining screw and thermo-
static switch mounting screw.
8. Remove evaporator to case mounting screws.
9. Withdraw evaporator with cable and thermostatic
switch assembly. Be careful to prevent kinks in the
thermostatic capillary.
10. Pull the cable out toward the air outlet side of the
evaporator.
Installation
1. Pass the replacement cable through the same channel
in the evaporator fins. If a new evaporator is being
installed, a channel will need to be opened between
the evaporator fins. This may be done by pushing a
pointed pencil between the fins beginning at the air
outlet side of the core, two inches to the right of the
left side of the fins and between the third and fourth
tubes down from the top. The cable channel should
exit at the air inlet side of the core between the first
and second tubes down from the top.
CHEVROLET CHASSIS SERVICE MANUAL
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