Chevrolet 30 Series 1967 Service Manual page 49

HEATER AND AIR CONDITIONING 1A-21
H IG H PR ESSU RE
G A U G E FITTING*
P O A V A L V E
L O W PR ESSU RE
G A U G E FIT TIN G
M UFFLER
■COMPRESSOR
H IG H PR ESSU R E.
L O W PRESSURE
G A G E V A L V E
G A G E V A L V E
V A L V E
V A L V E
R EFR IG ER A N T
SU PPLY
► T O V A C U U M SU PPLY
F ig . 31 - Charging Schematic
CHEVROLET TRUCK SERVICE M ANUAL