Buick LeSabre 1965 Service Manual page 802

Vacuum applied to both stages when air conditioner air lever
NORMAL, VENT or RECIR., and both heater DEFROSTER
and HEATER TEMP levers off ,
Htr,-A/C Diaphragm
Water Valve
Suction Throttle
Valve
Vacuum
Storage
Tank
Modulator
(Located on
Control Assembly)
>
n
n
m
</>
to
o
70
m
Vacuum applied when air conditioner air lever
NORMAL, VENT or RECIR., and heater
DEFROSTER and/or HEATER TEMP lever(s)
Outside- Recirculated
Diaphragm
Vacuum is applied to both stages of
diaphragm when heater DEFROSTER
and/or HEATER TEMP levers on, or
when air conditioner air lever NORMAL
or VENT
Vacuum applied when air conditioner
air lever in RECIR
Air Conditioner
Vacuum Disc Switch
o
5
5
m
TO
TO
n
O
g
6
to
to
Heater Vacuum
Disc Switch
Figure 11-80—Vacuum Circuit - 49000 Series