1928 Cadillac - GM Heritage Center

LaSalle inlet connection and strainer
GASOLINE SYSTEM 79
To intake header
To windshield cleaner
To vacuum pump
Fig. 1
Vacuum tank
Sectional view of vacuum tank
Fig. 2
Cadillac inlet connection and strainer First. typc check valve _ on vacuum tank .
.To check valve LaSalle 303
Vent valve
To windshield cleaner
Inner
chamber
Float
Outer,
chamber
Vacuum valve
To intake header
CPT
OSS-inch dia.
3/16
inch
7/32-inch dia.-
.104-inch dia. Nipple 73743 must be used
with this check valve
To vacuum pump
Fig. 3
Second-type check valve—on dash.
Flapper valve Cadillac 341-A and LaSalle 303
Outlet to filter
i-To vacuum tank
Inlet port
Outlet port and passage
Outlet plugged on Cadillac
341-B and LaSalle .328
king used to identify this
type check valve on Cadillac
341-A and LaSalle 303
Identify nipple by
thickness of hex.
Fig. 5
Sectional view of vacuum pump
Eccentric on rear end of camshaft
.055-inch dia
Nipple 879786 must be
used with this check valve
Fig. 4
Third-type check valve—on dash.
Cadillac 341-A and B, LaSalle 303 and 328
Plate 43. Vacuum tank, pump and check valve.